CN108092704A - Multi-subband bandwidth varying repeater - Google Patents
Multi-subband bandwidth varying repeater Download PDFInfo
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- CN108092704A CN108092704A CN201611026722.XA CN201611026722A CN108092704A CN 108092704 A CN108092704 A CN 108092704A CN 201611026722 A CN201611026722 A CN 201611026722A CN 108092704 A CN108092704 A CN 108092704A
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- 238000007493 shaping process Methods 0.000 claims abstract description 19
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15507—Relay station based processing for cell extension or control of coverage area
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present invention provides a kind of multi-subband bandwidth varying repeaters, its baseband signal processing unit includes multiple treatment channels, each treatment channel includes reception processing unit point and emits process part, the reception processing unit point includes sequentially connected reception frequency mixing module, down sample module and signal shaping module, and the down sample module includes a downsampling filter or multiple downsampling filters of cascade Connection；The transmitting process part includes sequentially connected up-sampling module and transmitting frequency mixing module, the up-sampling module includes a up-sampling filter or multiple up-sampling filters of cascade Connection, and the up-sampling factor of the number of up-sampling filter up-sampling filter identical with the number of the downsampling filter, described is identical with the down-sampling factor of the downsampling filter.The multi-subband bandwidth varying repeater of the present invention can be handled the signal of multiple frequency ranges, and can be multiplexed between wave filter.
Description
Technical field
The present invention relates to mobile communication, the multi-subband bandwidth varying repeater of more particularly to a kind of mobile communication.
Background technology
With the rapid development of mobile communication, need to realize multiband multi-standard bandwidth varying at present in mobile communication equipment
Needs it is more and more, if still realizing the communication of multi-standard bandwidth varying using traditional analog hardware, difficulty meeting
It increases and for the more demanding of hardware, versatility is not also strong, such as the conversion of frequency is required for change hardware circuit.
Accordingly, it is desirable to provide a kind of device for communication relay of multi-subband bandwidth varying, can not change hardware
Circuit can realize the communication of the arbitrary bandwidth varying of multi-standard.
The content of the invention
It is an object of the present invention to provide a kind of repeaters of multi-subband bandwidth varying, can not change hardware electricity
The communication of the arbitrary bandwidth varying of multi-standard is realized in the case of road.
The multi-subband bandwidth varying repeater of the present invention, including baseband signal processing unit, for will be from analog-to-digital conversion electricity
The digital signal of road output handled and incite somebody to action treated that signal output is converted to D/A converting circuit and finally emitted,
The baseband signal processing unit includes multiple treatment channels, each treatment channel for handle frequency with setting and
The signal of the bandwidth of setting, each treatment channel include reception processing unit point and emit process part, the receiving area
Reason part includes sequentially connected reception frequency mixing module, down sample module and signal shaping module, and the reception frequency mixing module will
The reception local oscillation signal of the treatment channel is mixed to generate zero intermediate frequency signals with the input signal of the treatment channel, institute
Stating down sample module includes a downsampling filter or multiple downsampling filters of cascade Connection；The transmitting processing unit
Point include sequentially connected up-sampling module and transmitting frequency mixing module, the up-sampling module including a up-sampling filter or
Multiple up-sampling filters of person's cascade Connection, and the number of the up-sampling filter and of the downsampling filter
The up-sampling factor of identical, the described up-sampling filter of number is identical with the down-sampling factor of the downsampling filter, the hair
Frequency mixing module is penetrated to be mixed to generate the processing by the transmitting local oscillation signal of the treatment channel and received signal
The output signal of passage.
Further, in order to save spatial logic resource, the up-sampling factor and the down-sampling factor are 2, when
When the down sample module includes multiple downsampling filters of cascade Connection, at most 2^ (n-1) a sampling rate is identical
The treatment channel can be multiplexed one n-th grade of the downsampling filter, it is corresponding more with the reception processing unit point
A treatment channel can be multiplexed a up-sampling filter, and wherein computing 2^ (n-1) represents 2 n-1 powers, and n is
The series of the downsampling filter.
Preferably, the up-sampling filter and the downsampling filter are half-band filter.The baseband signal
Processing unit is realized in FPGA.
The number of multiple treatment channel bandwidth varyings is realized in the multi-subband bandwidth varying repeater of the present invention on same FPGA
Word wave filter can realize and the signal of multiple frequency ranges is handled, flexible structure；And multiple digital filters can use
The mode of multiplexing is realized so that the application of path filter is more reasonable, and the framework of entire digital filter is simpler, effectively
Ground saves spatial logic resource, operational efficiency higher.
Description of the drawings
Fig. 1 is the structure diagram of the downlink of the multi-subband bandwidth varying repeater of the present invention；
Fig. 2 is the structure diagram of the uplink of the multi-subband bandwidth varying repeater of the present invention；
Fig. 3 is the receiving area of the treatment channel of the baseband signal processing unit of the multi-subband bandwidth varying repeater of the present invention
Manage the structure diagram of part；
Fig. 4 is at the transmitting of the treatment channel of the baseband signal processing unit of the multi-subband bandwidth varying repeater of the present invention
Manage the structure diagram of part；
Fig. 5 is the receiving area of the treatment channel of the baseband signal processing unit of the multi-subband bandwidth varying repeater of the present invention
Manage an exemplary structure diagram of part；
Fig. 6 is at the transmitting of the treatment channel of the baseband signal processing unit of the multi-subband bandwidth varying repeater of the present invention
Manage an exemplary structure diagram of part.
Specific embodiment
The multi-subband bandwidth varying repeater of the present invention is made with reference to the accompanying drawings and detailed description further detailed
Thin description, but it is not as a limitation of the invention.
As shown in Figure 1, the structure diagram of the downlink for the multi-subband bandwidth varying repeater of the present invention.In downlink
Link, BS ports coupled room multi-standard wireless signal enter medium multiplefrequency mixer 101 and carry out Signal separator (i.e. by different band
The wide, signal of different frequency is separated), carry out signal amplification filtering subsequently into rf analog front-end circuit 102, then into
Enter analog to digital conversion circuit 103 and carry out A/D signal conversions, transformed digital signal is sent into baseband signal processing unit 104 and is carried out
Signal processing, digital signal that treated enters D/A converting circuit 105 and carries out D/A signal conversions, finally by radio frequency analog
After back-end circuit 106 and medium multiplefrequency mixer 107 are combined, emit from MS ports and export.In uplink, such as Fig. 2 institutes
Show, MS ports received signal is successively by medium multiplefrequency mixer 207, rf analog front-end circuit 206, analog to digital conversion circuit
Into baseband signal processing unit 204 after 205, digital signal that treated sequentially enters D/A converting circuit 203, radio frequency analog
After back-end circuit 202 and medium multiplefrequency mixer 201, emit from BS ports and export.
103,205 pairs of intermediate-freuqncy signals of analog to digital conversion circuit positioned at receiving portion sample, and the signal after sampling enters
Baseband signal processing unit 104,204 carries out the processing such as Digital Down Convert, I/Q demodulation, extraction, filtering；Treated, and signal is sent
Enter transmitting portion, baseband signal is modulated by interpolation, filtering, I/Q and then is transformed by D/A converting circuit 105,203
Analog intermediate frequency signal.
Baseband signal processing unit 104,204 realizes half-band filter (HBF), has limit for length's unit impulse response wave filter
(FIR), the functions such as numerically-controlled oscillator (NCO).Wave filter effectively filters out out of band signal, and the index for reaching Out-of-band rejection will
It asks；Numerically-controlled oscillator can achieve the purpose that conversion bandwidth by changing oscillator signal.
With reference to Fig. 3 to Fig. 6, the structure for the baseband signal processing unit of the multi-subband bandwidth varying repeater of the present invention is shown
It is intended to, is wherein Fig. 3, reception processing unit point shown in 5, shown in 6 is Fig. 4, transmitting process part.Preferably, baseband signal
Processing unit is realized in FPGA.As shown in the figure, baseband signal processing unit includes multiple treatment channels (such as in Fig. 5,6
CH1~CH14), each treatment channel has the frequency of setting, the signal of the bandwidth of setting for handling.Each treatment channel is equal
Including reception processing unit point (as shown in Fig. 3,5) and transmitting process part (as shown in Fig. 4,6), reception processing unit point is used for will be from
The digital signal of analog to digital conversion circuit (such as ADC1~ADC3 in Fig. 5) output is handled, and transmitting process part is used for will
Reception processing unit point treated signal output is to D/A converting circuit (such as DAC1~DAC3 in Fig. 6).
Fig. 5 and baseband signal processing unit shown in Fig. 6 include 14 treatment channels (CH1~CH14), but this field
Technical staff is it is understood that baseband signal processing unit can also include any other number treatment channel.
As shown in Fig. 3,5, reception processing unit point includes sequentially connected reception frequency mixing module 41, down sample module 42 and letter
Number shaping module 43.By taking first treatment channel CH1 as an example, receive frequency mixing module 41 and believe the reception local oscillator for the treatment of channel CH1
The input signal of number RNCO1 and treatment channel CH1 is mixed to generate zero intermediate frequency signals, then by down sample module 42 to letter
Number carry out down-sampling；Signal shaping module 43 is made of to carry out signal shaping signal shaping wave filter RFIR1.
Down sample module 42 includes a downsampling filter or multiple downsampling filters of cascade Connection, preferably
Ground, downsampling filter are half-band filter.For example, as shown in figure 5, in treatment channel CH1~CH8, each treatment channel CHi
Include downsampling filter RHBFi_1, RHBFi_2, RHBFi_3 and RHBFi_4 of 4 cascade Connections；Treatment channel CH9~
In CH12, each treatment channel CHi includes downsampling filter RHBFi_1, RHBFi_2 and RHBFi_ of 3 cascade Connections
3；In treatment channel CH13 and CH14, each treatment channel CHi includes the downsampling filter RHBFi_1 of 2 cascade Connections
And the sequence number that RHBFi_2, wherein i are treatment channel.Although not shown in the drawings, it will be appreciated by those skilled in the art that
The down sample module of each treatment channel can also only include a downsampling filter, can also include difference to that indicated in the drawings
Number downsampling filter, the sample rate for simply entering the signal of signal shaping module meet needs.
As shown in Fig. 4,6, transmitting process part includes sequentially connected up-sampling module 44 and transmitting frequency mixing module 45.With
Exemplified by first treatment channel CH1, transmitting frequency mixing module 45 receives the transmitting local oscillation signal TNCO1 for the treatment of channel CH1 with it
To signal be mixed to generate the output signal for the treatment of channel CH1.
Up-sampling module 44 includes a up-sampling filter or multiple up-sampling filters of cascade Connection, and one
The number of up-sampling filter is identical with the number of the downsampling filter in the treatment channel in a treatment channel, up-samples filter
The up-sampling factor of ripple device and the down-sampling factor of the downsampling filter of the treatment channel are also identical, to ensure that each processing is logical
Emit process part in road to match with the sampling rate of reception processing unit point.Preferably, up-sampling filter is half-band filter.
For example, as shown in fig. 6, in treatment channel CH1~CH8, reception processing unit corresponding each treatment channel CHi
Split-phase is same, includes up-sampling filter THBFi_1, THBFi_2, THBFi_3 and THBFi_4 of 4 cascade Connections；Processing is logical
In road CH9~CH12, reception processing unit split-phase corresponding each treatment channel CHi is same, upper including 3 cascade Connections
Sampling filter THBFi_1, THBFi_2 and THBFi_3；In treatment channel CH13 and CH14, each treatment channel CHi is right with it
The reception processing unit split-phase answered is same, and the up-sampling filter THBFi_1 and THBFi_2 including 2 cascade Connections, wherein i are
The sequence number for the treatment of channel.Although not shown in the drawings, it will be appreciated by those skilled in the art that each treatment channel on adopt
Egf block can also only include a up-sampling filter, can also include different number up-sampling filterings to that indicated in the drawings
Device, the sample rate for simply entering the signal of transmitting frequency mixing module meet needs.
In the example depicted in fig. 5, analog to digital conversion circuit includes ADC1, ADC2 and ADC3, in the example depicted in fig. 6,
D/A converting circuit includes DAC1, DAC2 and DAC3.It will be appreciated by persons skilled in the art that analog to digital conversion circuit can be with
Include the ADC of any other number, D/A converting circuit can also also include the DAC of any other number.
Although the signal that ADC1 is exported in the example shown in Fig. 5 enters the signal for the treatment of channel CH1~CH5, ADC2 output
The signal exported into treatment channel CH6~CH9, ADC3 enters treatment channel CH10~CH14, but those skilled in the art can
With understanding, the signal of any one output in ADC1, ADC2 or ADC3 can arbitrarily select treatment channel (can select
Select any one into CH1~CH14) it is handled, different treatment channels can be used for handling different bandwidth, difference
The signal of frequency, different treatment channels can be used for processing same band, the signal of identical frequency.Each treatment channel is fitted
Frequency and bandwidth can be as desired by the frequencies for setting local oscillation signal (receive local oscillation signal and emit local oscillation signal)
It is set with bandwidth.Similarly, although the output signal for the treatment of channel CH1~CH5 shown in Fig. 6 enters ADC1, treatment channel
The output signal of CH6~CH9 enters ADC2, the output signal for the treatment of channel CH10~CH14 enters ADC3, but art technology
Personnel it is understood that in treatment channel CH1~CH14 any one export signal can select into ADC1~
Any one in ADC3.
With reference to Fig. 5 and Fig. 6, each of baseband signal processing module is illustrated by taking first treatment channel CH1 as an example
The course of work for the treatment of channel.In the example shown in Fig. 5 and Fig. 6, the up-sampling factor and the down-sampling of up-sampling filter are filtered
The down-sampling factor of ripple device is 2.
Into the signal of the reception processing unit point for the treatment of channel CH1, zero intermediate frequency is generated with receiving local oscillation signal RNCO1 mixing
Signal, sampling rate is 107.52MHz at this time；Signal is sent into the 1st grade of downsampling filter RHBF1_1 and carries out down-sampling, at this time
Sampling rate after down-sampling is down to 53.76MHz；It subsequently enters the 2nd grade of downsampling filter RHBF1_2 and carries out down-sampling, under
Sampling rate after sampling is down to 26.88MHz；Then signal is sent into 3rd level downsampling filter RHBF1_3 and carries out down-sampling,
Sampling rate after down-sampling is down to 13.44MHz；Signal is sent into the 4th grade of downsampling filter RHBF1_4 and adopt afterwards
Sample, at this time the sampling rate after down-sampling be down to 6.72MHz；Last signal is sent into signal shaping wave filter RFIR1 and carries out signal
Shaping.The transmitting process part that the signal exported from signal shaping wave filter enters treatment channel CH1 is up-sampled, and is led to respectively
Cross the 1st grade of up-sampling filter THF1_1, the 2nd grade of up-sampling filter THF1_2,3rd level up-sampling filter THF1_3 and
4 grades of up-sampling filter THF1_4, the sampling rate of signal risen to respectively from 6.72MHz 13.44MHz, 26.88MHz,
53.72MHz and 107.52MHz, last signal are mixed to obtain output signal, output letter with transmitting local oscillation signal TNCO1
Number it is sent to a progress digital-to-analogue conversion into DAC1, DAC2 and DAC3.In this way, complete the baseband signal of single treatment channel
Processing procedure.
Based on the framework of the digital filter in above-mentioned baseband signal processing unit, the signal to multiple frequency ranges can be realized
It is handled, can realize multi-subband bandwidth varying digital filter.
In order to which the application of the wave filter of each treatment channel is made more to tend to be reasonable, saving spatial logic resource can be upper
It states in the filter configuration of base band signal process and is multiplexed using wave filter.
For a path filter application is made more to tend to be reasonable, spatial logic resource is saved, in filter configuration design
Employ the multiplexing of wave filter.When down sample module includes multiple downsampling filters of cascade Connection, at most 2^ (n-1) is a
The identical treatment channel of sampling rate can be multiplexed one n-th grade of downsampling filter, corresponding more with reception processing unit point
A treatment channel can be multiplexed a up-sampling filter, and wherein computing 2^ (n-1) represents 2 n-1 powers, and n filters for down-sampling
The series of ripple device.
Such as in the example shown in Fig. 5 and Fig. 6 (wherein there are the wave filters of multiplexing relation between dotted line frame expression),
The reception processing unit of each treatment channel point, treatment channel CH1~CH14 are each filtered respectively using respective 1st grade of down-sampling
Device RHBF1_1~RHBF14_1 carries out the 1st grade of down-sampling.
During the 2nd grade of down-sampling, 1/2 before being the 1st grade of down-sampling due to the sampling rate of signal, because
This, can be multiplexed same downsampling filter with 2 treatment channels, for example, the 2nd grade of down-sampling filter for the treatment of channel CH1 and CH2
Ripple device RHBF1_2 and RHBF2_2 can be realized with same entity wave filter, such as can be answered by time-multiplexed mode
With same entity wave filter.Similarly, the 2nd grade of the downsampling filter RHBF3_2 and RHBF4_2 for the treatment of channel CH3 and CH4
A wave filter can be multiplexed, the 2nd grade of the downsampling filter RHBF5_2 and RHBF6_2 for the treatment of channel CH5 and CH6 can be answered
With a wave filter, the 2nd grade of the downsampling filter RHBF7_2 and RHBF8_2 for the treatment of channel CH7 and CH8 can be multiplexed one
Wave filter, the 2nd grade of the downsampling filter RHBF9_2 and RHBF10_2 for the treatment of channel CH9 and CH10 can be multiplexed a filtering
Device, the 2nd grade of the downsampling filter RHBF11_2 and RHBF12_2 for the treatment of channel CH11 and CH12 can be multiplexed a wave filter,
The 2nd grade of the downsampling filter RHBF13_2 and RHBF14_2 for the treatment of channel CH13 and CH14 can be multiplexed a wave filter.
During the down-sampling of 3rd level, 1/2 before being the 2nd grade of down-sampling due to the sampling rate of signal, i.e.,
1/4 before being the 1st grade of down-sampling, therefore, same downsampling filter can be multiplexed with 4 treatment channels, for example, processing is logical
3rd level downsampling filter RHBF1_3~RHBF4_3 of road CH1~CH4 can realize with same entity wave filter, example
Same entity wave filter can be such as multiplexed by time-multiplexed mode.Similarly, under the 3rd level for the treatment of channel CH5~CH8
Sampling filter RHBF5_3~RHBF8_3 can be multiplexed a wave filter, the 3rd level down-sampling filter for the treatment of channel CH9~CH12
Ripple device RHBF9_3~RHBF12_3 can be multiplexed a wave filter.
Particularly, treatment channel CH13 and CH14 is only comprising two-stage downsampling filter, the 2nd grade of downsampling filter it
That connect respectively afterwards is signal shaping wave filter RFIR13 and RFIR14.Due to entering signal forming filter RFIR13 and
The sampling rate of the signal of RFIR14 is can be with into 1/4 of the sampling rate before the 1st grade of downsampling filter, therefore at most
There are 4 treatment channels for only including two-stage downsampling filter that can be multiplexed a signal shaping wave filter.Therefore showing in Fig. 5
In example, signal shaping the wave filter RFIR13 and RFIR14 for the treatment of channel CH13 and CH14 are multiplexed same forming filter, example
Such as can RFIR13 and RFIR14 be realized with same entity wave filter by time-multiplexed mode.
Similarly, during the 4th grade of down-sampling, before being the 1st grade of down-sampling due to the sampling rate of signal
1/8, therefore, same downsampling filter can be multiplexed with 8 treatment channels.For example, under the 4th grade for the treatment of channel CH1~CH8
Sampling filter RHBF1_4~RHBF8_4 can realize with same entity wave filter, such as can be by time-multiplexed
Mode is multiplexed same entity wave filter.
Particularly, treatment channel CH9~CH12 is only comprising three-level downsampling filter, 3rd level downsampling filter it
That connect respectively afterwards is signal shaping wave filter RFIR9~RFIR12.Due to entering signal forming filter RFIR9~RFIR12
The sampling rate of signal be into 1/8 of the sampling rate before the 1st grade of downsampling filter, therefore can have up to 8
Identical (only the including three-level downsampling filter) treatment channel of sampling rate can be multiplexed a signal shaping wave filter.
Therefore in the example of hgure 5, signal shaping wave filter RFIR9~RFIR12 for the treatment of channel CH9~CH12 multiplexing it is same into
Mode filter, such as can RFIR9~RFIR12 be realized with same entity wave filter by time-multiplexed mode.
After the 4th grade of downsampling filter, the sampling rate of signal has fallen to adopting for present treatment channel input signal
Therefore the 1/16 of sample rate, can have up to identical (i.e. comprising the level Four downsampling filter) processing of 16 sampling rates
Passage can be multiplexed a signal shaping wave filter.Therefore in the example of hgure 5, the signal shaping filter for the treatment of channel CH1~CH8
Ripple device RFIR1~RFIR8 is multiplexed same forming filter, such as can be filtered by the same entity of time-multiplexed mode
Ripple device realizes RFIR1~RFIR8.
In the transmitting process part shown in Fig. 6, the number of the up-sampling filter of each treatment channel is led to the processing
The number of the downsampling filter of the reception processing unit in road point is identical.Similarly, the 1st grade of up-sampling filter THBF1_1~
THBF8_1 is multiplexed same wave filter；2nd grade of up-sampling filter THBF1_2~THBF4_2, THBF5_2~THBF8_2,
THBF9_2~THBF12_2 is multiplexed same wave filter respectively；3rd level up-sampling filter THBF1_3~THBF2_3,
THBF3_3~THBF4_3, THBF5_3~THBF6_3, THBF7_3~THBF8_3, THBF9_3~THBF10_3, THBF11_3
~THBF12_3, THBF13_3~THBF14_3 is multiplexed same wave filter respectively；It is respectively handled in the 4th grade of upsampling process
Passage uses respective wave filter.
In this way, multiplexing of multiple treatment channels to wave filter is realized, so as to save logical resource so that base band
The framework of the entire digital filter of processing unit is simpler, operational efficiency higher.
More than specific embodiment is only exemplary embodiments of the present invention, it is impossible to be used in limits the present invention, the present invention
Protection domain be defined by the claims.Those skilled in the art can be in the essence and protection domain of the present invention, to this
Various modifications or equivalent substitution are made in invention, these modifications or equivalent substitution also should be regarded as being within the scope of the present invention.
Claims (4)
1. a kind of multi-subband bandwidth varying repeater, including baseband signal processing unit, for that will be exported from analog to digital conversion circuit
Digital signal handled and incite somebody to action that treated signal output is converted to D/A converting circuit and finally emitted, feature
It is, the baseband signal processing unit includes multiple treatment channels, and each treatment channel has setting for handling
The signal of frequency and the bandwidth of setting, each treatment channel include reception processing unit point and emit process part,
The reception processing unit point includes sequentially connected reception frequency mixing module, down sample module and signal shaping module, described
Frequency mixing module is received to be mixed to produce by the input signal of the reception local oscillation signal of the treatment channel and the treatment channel
Raw zero intermediate frequency signals, the down sample module include multiple down-samplings filtering of a downsampling filter or cascade Connection
Device；
The transmitting process part includes sequentially connected up-sampling module and transmitting frequency mixing module, and the up-sampling module includes
Multiple up-sampling filters of one up-sampling filter or cascade Connection, and the number of the up-sampling filter and institute
The up-sampling factor of identical, the described up-sampling filter of number of downsampling filter is stated with being adopted under the downsampling filter
Like factor is identical, and the transmitting frequency mixing module mixes the transmitting local oscillation signal of the treatment channel with received signal
Frequency is to generate the output signal of the treatment channel.
2. multi-subband bandwidth varying repeater according to claim 1, which is characterized in that it is described up-sampling the factor with it is described
The down-sampling factor is 2, when the down sample module includes multiple downsampling filters of cascade Connection, at most 2^
(n-1) the identical treatment channel of a sampling rate can be multiplexed one n-th grade of the downsampling filter, be connect with described
A up-sampling filter, wherein computing 2^ (n-1) can be multiplexed by receiving the corresponding multiple treatment channels of process part
Represent 2 n-1 powers, n is the series of the downsampling filter.
3. multi-subband bandwidth varying repeater according to claim 1, which is characterized in that the up-sampling filter and institute
It is half-band filter to state downsampling filter.
4. multi-subband bandwidth varying repeater according to claim 1, which is characterized in that the baseband signal processing unit
It is realized in FPGA.
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| CN201611026722.XA CN108092704B (en) | 2016-11-21 | 2016-11-21 | Multi-sub-band variable bandwidth repeater |
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