CN101771432A - Demodulation method and system used in hybrid transmission of uplink pilot signal and service signal - Google Patents
Demodulation method and system used in hybrid transmission of uplink pilot signal and service signal Download PDFInfo
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- CN101771432A CN101771432A CN200810241676A CN200810241676A CN101771432A CN 101771432 A CN101771432 A CN 101771432A CN 200810241676 A CN200810241676 A CN 200810241676A CN 200810241676 A CN200810241676 A CN 200810241676A CN 101771432 A CN101771432 A CN 101771432A
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Abstract
本发明适用于时分同步码分多址移动通信系统，提供了一种上行导频信号与业务信号混合传输时的解调方法和系统。收到上行导频接入信号与业务信号的混合信号后，执行的所述方法包括：对混合信号进行干扰消除处理；及对上行导频接收信号进行接入检测得到上行导频码字和/或业务信号进行解调处理得到业务数据。上述方法使时分同步码分多址移动通信系统的TS1和TS2时隙可以在保证上行导频接入质量的同时传输业务数据。
The invention is applicable to the time division synchronous code division multiple access mobile communication system, and provides a demodulation method and system when uplink pilot signal and service signal are mixedly transmitted. After receiving the mixed signal of the uplink pilot access signal and the service signal, the executed method includes: performing interference cancellation processing on the mixed signal; and performing access detection on the uplink pilot received signal to obtain the uplink pilot codeword and/or Or service signals are demodulated to obtain service data. The above method enables the TS1 and TS2 time slots of the time division synchronous code division multiple access mobile communication system to transmit service data while ensuring the quality of uplink pilot access.
Description
Technical field
The present invention relates to TD SDMA (TD-SCDMA) mobile communication system, demodulation method and system when relating in particular to uplink pilot signal and business datum mixed transport.
Background technology
In the frame structure of TD-SCDMA, after the descending pilot frequency time slot protection time slot and uplink pilot time slot at interval.The base station is when the uplink synchronizing signals UpPCH of mobile terminal receive emission like this, can receive this base station back reflection with other base station propagate the down-bound pilot frequency signal of coming through after a while.Be the interference of the down-bound pilot frequency signal of avoiding system to the portable terminal uplink synchronous, in August, 2006, the information Estate Division was organized the modification of standard, adopted uplink synchronous shifting scheme: the UpPCH of indicating mobile terminal launched regularly during cell system was broadcasted, and emission regularly can be from the position of the 1st chip of UpPTS up to the end of TS2 time slot in a subframe.Have the position of portable terminal UpPTS in physical channel is reshuffled when switching at Target cell emission ascending pilot frequency.In system realizes, base station measurement is from the disturbed condition of the 49th chip of GP when the TS2 time slot finishes, determine the original position that one of them disturbs less detection window, the base station locates to launch uplink synchronous by the initial portable terminal that inserts of cell system broadcast announcement constantly at this.To switching to the portable terminal of adjacent sub-district, comprise the x time of uplink synchronizing signals in the Target cell in the physical channel reconfigure command of base station.Can improve the success rate of portable terminal uplink synchronous like this.
Under the shifting scheme, TS1 and TS2 time slot are in order to guarantee all service data transmissions no longer of ascending pilot frequency cut-in quality.This mainly is in order to guarantee the access success rate of ascending pilot frequency, the power division of ascending pilot frequency and business datum has tangible inclination to guarantee the access success rate of ascending pilot frequency, thereby the rapid decline of the demodulation performance that causes business datum, so TS1 or TS2 time slot equal service data transmission no longer under the situation that has the ascending pilot frequency sign indicating number to exist.It is long that but conventional time slot is 864chip, and uplink pilot code words has only 128chip long, and it can be very big waste that obvious conventional time slot only transmits uplink pilot code words.
Summary of the invention
The object of the present invention is to provide a kind of ascending pilot frequency to insert the demodulation method of signal and service signal mixed transport, be intended to solve under the prior art, the TS1 of TD-SCDMA mobile communication system and TS2 time slot are in order to guarantee the not wasting of resources problem that causes of service data transmission of ascending pilot frequency cut-in quality.
The present invention is achieved in that a kind of ascending pilot frequency inserts the demodulation method of signal and service signal mixed transport, and described method comprises:
Mixed signal is carried out interference elimination treatment;
Ascending pilot frequency received signal and/or service signal are carried out demodulation process.
Another object of the present invention is to provide a kind of ascending pilot frequency to insert the demodulating system of signal and service signal mixed transport, described system comprises:
Interference cancellation module is carried out interference elimination treatment to mixed signal;
The signal demodulation module inserts detection to the ascending pilot frequency received signal and obtains uplink pilot signal and/or service signal is carried out demodulation process obtaining business datum.
The present invention is when ascending pilot frequency inserts signal and business datum and transmits simultaneously, adopt and carry out interference elimination treatment to received signal, can carry out interference elimination treatment to the business datum that will carry out demodulation, also can carry out interference elimination treatment to the data that will carry out ascending pilot frequency access detection, the data demodulates of carrying out is again at last separately handled; Can also adopt the mode of joint-detection simultaneously ascending pilot frequency and business datum to be detected processing, guarantee the success rate of up access and the correctness of business data transmission simultaneously, avoid conventional time slot only to transmit the waste that uplink pilot code words causes.
Description of drawings
Fig. 1 is the schematic diagram that the ascending pilot frequency that provides of the embodiment of the invention inserts the demodulation method of signal and service signal mixed signal;
Fig. 2 is the schematic diagram that zero setting mode that the ascending pilot frequency that provides of the embodiment of the invention inserts signal and service signal mixed signal is eliminated the demodulation method of interference;
Fig. 3 is the schematic diagram that the ascending pilot frequency that provides of the embodiment of the invention inserts first kind of demodulation method of signal and service signal mixed signal;
Fig. 4 is the schematic diagram that the ascending pilot frequency that provides of the embodiment of the invention inserts second kind of demodulation method of signal and service signal mixed signal;
Fig. 5 is the schematic diagram that the ascending pilot frequency that provides of the embodiment of the invention inserts the third demodulation method of signal and service signal mixed signal;
Fig. 6 is the schematic diagram that the ascending pilot frequency that provides of the embodiment of the invention inserts the 4th kind of demodulation method of signal and service signal mixed signal;
Fig. 7 is the schematic diagram that the ascending pilot frequency that provides of the embodiment of the invention inserts the 5th kind of demodulation method of signal and service signal mixed signal;
Demodulating system structure chart when Fig. 8 is the uplink pilot signal that provides of the embodiment of the invention and service signal mixed transport.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In embodiments of the present invention, after elder generation carries out interference elimination treatment to the data that receive, carry out access detection and traffic data demodulation processing that follow-up ascending pilot frequency inserts signal again.Also guarantee the transmission quality of business datum when having reached the quality of reception that guarantees ascending pilot frequency access signal, also carry out business data transmission simultaneously thereby make TS1 or the conventional time slot of TS2 exist ascending pilot frequency to insert signal.
The ascending pilot frequency that Fig. 1 shows the embodiment of the invention to be provided inserts the flow process of the demodulation method of signal and service signal mixed signal.When ascending pilot frequency access signal and business datum are transmitted simultaneously, after mixed signal is received in the base station, guarantee that the success rate of up access guarantees the correctness of business data transmission again, so need carry out following steps:
In step S101, mixed signal is carried out interference elimination treatment;
Interference elimination treatment can be only the business datum that will carry out demodulation to be carried out interference elimination treatment, also can be only the data that will carry out ascending pilot frequency access detection to be carried out interference elimination treatment, or ascending pilot frequency and business datum all carried out interference elimination treatment, also can adopt the mode of joint-detection simultaneously ascending pilot frequency and business datum to be carried out interference elimination treatment.
In step S102, the ascending pilot frequency received signal inserted detect and/or service signal carries out demodulation process.
Ascending pilot frequency after the interference elimination treatment is inserted signal to be inserted and detects and/or service signal after interference elimination treatment carries out demodulation process.
Fig. 2 shows the demodulation method that zero setting mode that ascending pilot frequency that the embodiment of the invention provides inserts signal and service signal mixed signal is eliminated interference.In the present embodiment, at first from the mixed signal that receives, read ascending pilot frequency sign indicating number received signal, carrying out uplink pilot code words detects, after the original position of uplink pilot code words in mixed signal that obtains according to detection carried out zero-setting operation that length is Nchip, the data after interference elimination treatment finished were carried out the demodulation process of business datum.Concrete steps are as described below:
201. from receive data, read ascending pilot frequency sign indicating number received signal;
202. ascending pilot frequency sign indicating number received signal is carried out uplink pilot code words to be detected;
203. judge whether to exist uplink pilot code words? set up and then continue to carry out, otherwise skip to step 206;
204. obtain the original position that detects the uplink pilot code words that obtains;
Handle 205. the mixed signal that receives is begun to carry out zero setting from above-mentioned original position, zero setting length is Nchip;
206. being carried out follow-up business Frame demodulation process, mixed signal after the interference elimination treatment obtains business datum.
It will be appreciated by those skilled in the art that; above-mentioned mixed signal to reception begins to carry out zero setting from above-mentioned original position and handles; zero setting length is in the Nchip step; can be near the position the above-mentioned original position; zero setting length is that Nchip can be the user-defined length that does not influence the effect of follow-up business Frame demodulation arbitrarily, and these do not break away from the scope of protection of the invention.
The ascending pilot frequency that Fig. 3 shows the embodiment of the invention to be provided inserts first kind of demodulation method of signal and service signal mixed signal.In the invention process, at first from receive data, read ascending pilot frequency sign indicating number received signal, carrying out uplink pilot signal detects, obtain uplink pilot code words and channel estimation results according to detection, the uplink pilot code words and the channel estimation results that obtain according to detection reconstruct the receiving terminal uplink pilot signal, the interference of getting rid of uplink pilot code words in receiving data will be sent into the demodulation process module of follow-up business datum through the signal of interference elimination treatment.Concrete steps are as follows:
301, from mixed signal, obtain the ascending pilot frequency sign indicating number and detect the reception data: Re Data
UpPCH
302, to Re Data
UpPCHCarrying out uplink pilot code words detects;
303, judge whether to exist uplink pilot code words? set up and then continue to carry out, otherwise skip to step 307;
304, obtain uplink pilot code words UpPCH and the channel estimation results that detection obtains;
305, with channel estimation results and the uplink pilot code words UpPCH convolution that detection obtains, reconstruct the UpPCH signal;
306, the influence of UpPCH signal will be got rid of among the received signal ReData;
307, data ReData after the interference elimination treatment is sent into receiving terminal demodulation process module and carry out the traffic data demodulation processing;
The ascending pilot frequency that Fig. 4 shows the embodiment of the invention to be provided inserts second kind of demodulation method of signal and service signal mixed signal.In embodiments of the present invention, at first from receive data, read service signal, carry out traffic data demodulation, the business datum and the channel estimation results that obtain according to demodulation reconstruct the business datum signal, in receiving data, get rid of the business datum signal, will send into follow-up uplink pilot signal through the reception data of interference elimination treatment and detect processing.Concrete steps are as follows:
401, from receive data, obtain service signal and receive data: Re Data
Data
402, to Re Data
DataCarry out the service signal demodulation process;
403, obtain business datum and channel estimation results after the demodulation;
404, channel estimation results and the business datum that detection obtains are carried out process of convolution, reconstruct receiving terminal business datum signal;
405, the influence of in received signal Re Data, getting rid of the business datum signal;
406, data Re Data after the interference elimination treatment is sent into uplink pilot code words detection processing and obtain uplink pilot code words.
The ascending pilot frequency that Fig. 5 shows the embodiment of the invention to be provided inserts the third demodulation method of signal and service signal mixed signal.In the present embodiment, at first from receive data, read ascending pilot frequency sign indicating number received signal, carrying out uplink pilot signal detects, obtain uplink pilot code words and user's channel estimation results according to detection, the uplink pilot code words and the channel estimation results that obtain according to detection reconstruct uplink pilot signal, the interference of getting rid of uplink pilot code words in receiving data will be sent into the demodulation process module of follow-up business datum through the signal of interference elimination treatment; According to the business datum and the channel estimation results that obtain after the traffic data demodulation processing, reconstruct receiving terminal business datum signal, and in receiving data, get rid of the professional interference that receives data, will send into follow-up uplink pilot signal detection processing through the signal of interference elimination treatment and obtain uplink pilot code words.Concrete steps are as described below:
501, from receive data, obtain the ascending pilot frequency sign indicating number and detect the reception data;
502, ascending pilot frequency sign indicating number received signal being carried out uplink pilot code words detects;
503, judge whether to exist uplink pilot code words? set up and then continue to carry out, otherwise skip to step 508;
504, obtain uplink pilot code words and the channel estimation results that detection obtains;
505, with channel estimation results and the uplink pilot code words convolution that detection obtains, reconstruct the UpPCH signal;
506, with the influence of getting rid of the UpPCH signal in the mixed signal that receives;
507, mixed signal after the interference elimination treatment being sent into receiving terminal demodulation process part handles to carry out traffic data demodulation;
508, mixed signal after the interference elimination treatment is carried out the service signal demodulation process;
509, obtain business datum and channel estimation results after the demodulation;
510, channel estimation results and the business datum that detection obtains are carried out process of convolution, reconstruct the business datum signal;
511, the influence of in the mixed signal that receives, getting rid of the business datum signal;
512, data after the interference elimination treatment are sent into uplink pilot code words and detected processing module.
The ascending pilot frequency that Fig. 6 shows the embodiment of the invention to be provided inserts the 4th kind of demodulation method of signal and service signal mixed signal.In the present embodiment, at first in receiving data, read service signal, carrying out traffic data demodulation handles, according to obtaining signal and channel estimation results after the traffic data demodulation, reconstruct the business datum signal, and in receiving data, get rid of business reception data, will send into follow-up uplink pilot signal through the signal of eliminating processing and detect processing; Detect the channel estimation results that can obtain uplink pilot code words and user according to uplink pilot signal, the uplink pilot code words and the channel estimation results that obtain according to detection reconstruct uplink pilot signal, in receiving data, get rid of uplink pilot code words, will send into the demodulation process module of follow-up business datum through the signal of interference elimination treatment.Specific as follows described:
601, from receive data, obtain service signal and receive data: Re Data
Data
602, carry out the service signal demodulation process;
603, obtain business datum and channel estimation results after the demodulation;
604, channel estimation results and the business datum that detection obtains are carried out process of convolution, reconstruct the business datum signal;
605, the influence of in the mixed signal that receives, getting rid of the business datum signal;
606, mixed signal after the interference elimination treatment is sent into uplink pilot code words and detected processing;
607, mixed signal after the above-mentioned interference elimination treatment being carried out uplink pilot code words detects;
608, judge whether to exist uplink pilot code words? set up and then continue to carry out, otherwise skip to step 612;
609, obtain uplink pilot code words and the channel estimation results that detection obtains; With channel estimation results and the uplink pilot code words convolution that detection obtains, reconstruct the UpPCH signal;
610, with the influence of getting rid of the UpPCH signal in the mixed signal that receives;
611, data after the interference elimination treatment are sent into receiving terminal demodulation process module and carried out the traffic data demodulation processing;
612, outgoing traffic data demodulates result.
The ascending pilot frequency that Fig. 7 shows the embodiment of the invention to be provided inserts the flow process of the 5th kind of demodulation method of signal and service signal mixed signal.In the present embodiment, ascending pilot frequency is inserted code word be used as a subscriber signal, include united detection processing in, obtain traffic data demodulation result and uplink pilot signal testing result.Specific as follows described:
701, include uplink pilot code words in joint-detection as special code word;
702, generate the sytem matrix that comprises uplink pilot code words;
703, carrying out joint detection algorithm calculates;
704, demodulate regular traffic data and uplink pilot code words simultaneously from receiving data.
Demodulating system structure when Fig. 8 shows uplink pilot signal that the embodiment of the invention provides and service signal mixed transport.For convenience of description, only show part related to the present invention here.Described system can place equipment such as base station.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
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| CN 200810241676 CN101771432B (en) | 2008-12-26 | 2008-12-26 | Demodulation method and system used in hybrid transmission of uplink pilot signal and service signal |
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| CN 200810241676 CN101771432B (en) | 2008-12-26 | 2008-12-26 | Demodulation method and system used in hybrid transmission of uplink pilot signal and service signal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102065032A (en) * | 2010-07-15 | 2011-05-18 | 西安电子科技大学 | Mobile communication system and method based on high altitude platform semi-regeneration signal processing |
| WO2012109850A1 (en) * | 2011-07-28 | 2012-08-23 | 华为技术有限公司 | Method and apparatus for data transmission |
| CN108337076A (en) * | 2017-01-19 | 2018-07-27 | 三星电子株式会社 | Method and apparatus for interfering demodulated reference signal to detect |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6577617B1 (en) * | 1998-09-07 | 2003-06-10 | Matsushita Electric Industrial Co., Ltd. | Communication terminal apparatus, base station communication apparatus and radio communication method |
| CN1150705C (en) * | 2001-08-15 | 2004-05-19 | 信息产业部电信传输研究所 | The third generation mobile communication W-CDMA adaptive coherent receiving method and receiver |
| CN1741423A (en) * | 2004-08-23 | 2006-03-01 | 大唐移动通信设备有限公司 | Method for eliminating interference of downgoing pilot channel |
| CN1855767B (en) * | 2005-04-18 | 2010-10-06 | 大唐移动通信设备有限公司 | Method for establishing cells with large radius in CDMA communication system synchronized by time division synchronizing codes |
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- 2008-12-26 CN CN 200810241676 patent/CN101771432B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102065032A (en) * | 2010-07-15 | 2011-05-18 | 西安电子科技大学 | Mobile communication system and method based on high altitude platform semi-regeneration signal processing |
| WO2012109850A1 (en) * | 2011-07-28 | 2012-08-23 | 华为技术有限公司 | Method and apparatus for data transmission |
| CN108337076A (en) * | 2017-01-19 | 2018-07-27 | 三星电子株式会社 | Method and apparatus for interfering demodulated reference signal to detect |
| CN108337076B (en) * | 2017-01-19 | 2022-04-19 | 三星电子株式会社 | Method and apparatus for interference demodulation reference signal detection |
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| CN101771432B (en) | 2013-06-05 |
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