CN205566651U - Encrypt digital baseband control circuit based on gauss frequency shift keying wireless transceiver - Google Patents
Encrypt digital baseband control circuit based on gauss frequency shift keying wireless transceiver Download PDFInfo
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- CN205566651U CN205566651U CN201620342546.XU CN201620342546U CN205566651U CN 205566651 U CN205566651 U CN 205566651U CN 201620342546 U CN201620342546 U CN 201620342546U CN 205566651 U CN205566651 U CN 205566651U
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- 238000004891 communication Methods 0.000 claims abstract description 18
- 238000012937 correction Methods 0.000 claims description 22
- 238000009432 framing Methods 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 13
- 238000012795 verification Methods 0.000 claims description 9
- 238000004088 simulation Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
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Abstract
The utility model provides an encrypt digital baseband control circuit based on gauss frequency shift keying wireless transceiver, its includes the baseband is sent control circuit and baseband and is received control circuit two parts, the host computer through a three -way serial communication interface module respectively with control circuit is sent to the baseband and the control circuit connection is received to the baseband, the baseband is sent control circuit and is connected the transmitter that constitutes wireless transceiver with simulation radio frequency front end transmitting circuit, the baseband is received control circuit and is connected the receiver that constitutes wireless transceiver with simulation radio frequency front end receiving circuit. The utility model discloses have the data encryption function, can protect the safety of radio communication data well.
Description
Technical field
This utility model relates to a kind of encryption digital baseband control circuit based on Gaussian Frequency Shift Keying wireless transceiver.
Background technology
In traditional Gaussian Frequency Shift Keying (hereinafter referred GFSK) wireless transceiver digital baseband control circuit scheme, being usually and communication initial data is directly modulated demodulation, the reliability for wireless communication data cannot be effectively ensured with confidentiality.Therefore designing a kind of encryption digital baseband control circuit based on GFSK wireless transceiver is to have very much realistic meaning.
Summary of the invention
Task of the present utility model is to provide a kind of encryption digital baseband control circuit based on GFSK wireless transceiver, and task of the present utility model realizes by following technical solution:
A kind of encryption digital baseband control circuit based on Gaussian Frequency Shift Keying wireless transceiver, it is characterized in that: include base band sending controling circuit and Baseband Receiver control circuit two parts, host computer is connected with described base band sending controling circuit and Baseband Receiver control circuit respectively by one or three line serial communication interface module；Base band sending controling circuit and analog radio frequency front end transtation mission circuit are connected to form the emitter of wireless transceiver；Baseband Receiver control circuit and analog radio frequency front end receiver circuit are connected to form the receptor of wireless transceiver.
In this utility model one embodiment, described base band sending controling circuit includes framing control module, cache module, encrypting module, CRC generation module, forward error correction coding module, data white noise module, Manchester encoding module, gaussian filtering module, Sigma-Delta modulation module；Wherein, framing control module is connected with described three line serial communication interface module；Framing control module is connected with cache module, encrypting module, CRC generation module respectively；The output of framing control module is connected with the input of forward error correction coding module；The output of forward error correction coding module is connected with the input of data white noise module；The output of data white noise module is connected with Manchester encoding module input；The output of Manchester encoding module is connected with the input of gaussian filtering module；The output of gaussian filtering module is connected with the input of Sigma-Delta modulation module；Sigma-Delta modulation module is to the analogue signal after the output modulation of outside.
Further, described encrypting module uses 128 AES encryption algorithms.
In this utility model one embodiment, described Baseband Receiver control circuit includes solution frame control module, cache module, deciphering module, CRC correction verification module, decoding FEC module, data solution white noise module, manchester decoder module, baseband data samples module；Wherein, the output of baseband data samples module is connected with the input of manchester decoder module；The output of manchester decoder module is connected with the input of data solution white noise module；The output of data solution white noise module is connected with the input of decoding FEC module；The output of decoding FEC module is connected with the input solving frame control module；Solve frame control module to be connected with cache module, deciphering module, CRC correction verification module respectively；Solve frame control module to be connected with described three line serial communication interface module.
Further, described deciphering module uses 128 AES encryption algorithms.
Compared with prior art, this utility model employs data encryption technology, improves reliability and the confidentiality of radio communication.
Accompanying drawing explanation
Fig. 1 is a kind of base band sending controling circuit scheme block diagram of the present utility model；
Fig. 2 is a kind of Baseband Receiver control circuit scheme block diagram of the present utility model；
Fig. 3 is the application example block diagram in a kind of GFSK wireless transceiver integrated circuit of the present utility model.
Detailed description of the invention
The utility model is described in further detail for instantiation below in conjunction with the accompanying drawings, but non-restriction of the present utility model.
A kind of encryption digital baseband control circuit based on Gaussian Frequency Shift Keying wireless transceiver, it includes base band sending controling circuit and Baseband Receiver control circuit two parts, and host computer is connected with described base band sending controling circuit and Baseband Receiver control circuit respectively by one or three line serial communication interface module；Base band sending controling circuit and analog radio frequency front end transtation mission circuit are connected to form the emitter of wireless transceiver；Baseband Receiver control circuit and analog radio frequency front end receiver circuit are connected to form the receptor of wireless transceiver.
In this utility model one embodiment, described base band sending controling circuit includes framing control module, cache module, encrypting module, CRC generation module, forward error correction coding module, data white noise module, Manchester encoding module, gaussian filtering module, Sigma-Delta modulation module；Wherein, framing control module is connected with described three line serial communication interface module；Framing control module is connected with cache module, encrypting module, CRC generation module respectively；The output of framing control module is connected with the input of forward error correction coding module；The output of forward error correction coding module is connected with the input of data white noise module；The output of data white noise module is connected with Manchester encoding module input；The output of Manchester encoding module is connected with the input of gaussian filtering module；The output of gaussian filtering module is connected with the input of Sigma-Delta modulation module；Sigma-Delta modulation module is to the analogue signal after the output modulation of outside.
As it is shown in figure 1, be a kind of example approach schematic diagram of base band sending controling circuit 30 of the present utility model.It can be seen that described base band sending controling circuit 30 includes framing control module 01, CRC generation module 02, cache module 03, encrypting module 04, forward error correction coding module 05, data white noise module 06, Manchester encoding module 07, gaussian filtering module 08, Sigma-Delta modulation module 09.Wherein, three line serial communication interface module 00 are connected between framing control module 01；It is connected between framing control module 01 with cache module 03, AES encryption module 04, CRC generation module 02；The output of framing control module 01 is connected with the input of forward error correction coding module 05；The output of forward error correction coding module 05 is connected with the input of data white noise module 06；The output of data white noise module 06 is connected with Manchester encoding module 07 input；The output of Manchester encoding module 07 is connected with the input of gaussian filtering module 08；The output of gaussian filtering module 08 is connected with the input of Sigma-Delta modulation module 09；Sigma-Delta modulation module 09 is to the analogue signal after the output modulation of outside.
Sending controling circuit 30 operation principle of the present utility model is as follows: three line serial communication interface module 00 are for receiving the data stream that host computer is to be sent, by framing control module 01, load data unloading is entered cache module 03, the internal data of cache, after the encryption of AES-128 encrypting module 04 and the calculating of CRC generation module 02, obtains the ciphertext of band CRC.Before sending ciphertext data, framing control module 01 can first send the frame head data of wireless data frame.Frame head sends after terminating, ciphertext data sequentially pass through forward error correction coding module 05, data white noise module 06, Manchester encoding module 07, gaussian filtering module 08 as the CRC data of payload and postamble, are finally generated treated analog baseband signal by Sigma-Delta modulation module 09 and export to rf modulation circuit.
In this utility model one embodiment, described Baseband Receiver control circuit includes solution frame control module, cache module, deciphering module, CRC correction verification module, decoding FEC module, data solution white noise module, manchester decoder module, baseband data samples module；Wherein, the output of baseband data samples module is connected with the input of manchester decoder module；The output of manchester decoder module is connected with the input of data solution white noise module；The input of the output decoding FEC module of data solution white noise module connects；The output of decoding FEC module is connected with the input solving frame control module；Solve frame control module to be connected with cache module, deciphering module, CRC correction verification module respectively；Solve frame control module to be connected with described three line serial communication interface module.Further, described deciphering module is AES-128 deciphering module.
As in figure 2 it is shown, be the scheme schematic diagram of a kind of example of reception control circuit 31 of the present utility model.It can be seen that described Baseband Receiver control circuit 31 includes solution frame control module 11, CRC correction verification module 12, cache module 13, AES-128 deciphering module 14, decoding FEC module 15, data solution white noise module 16, manchester decoder module 17, baseband sampling module 18；Wherein, baseband sampling module 18 output is connected with the input of manchester decoder module 17；The output of manchester decoder module 17 is connected with the input of data solution white noise module 16；The output of data solution white noise module 16 is connected with the input of decoding FEC module 15；The output of decoding FEC module 15 is connected with the input solving frame control module 11；Solve frame control module 11 to be connected with between cache module 13, AES-128 deciphering module 14, CRC correction verification module 12；Solve frame control module 11 to be connected between three line serial communication interface module 00.
nullBaseband Receiver control circuit 31 operation principle of the present utility model is as follows: the signal obtained after RF front-end circuit down coversion is sampled by baseband data samples module 18，First the frame control module 11 frame preamble field to Frame is solved、Destination address field (DAF)、Source address field、Frame type field is identified，Then the data after being sampled by valid data payload field carry out manchester decoder successively、Solve white noise and decoding FEC，Called by solution frame control module 11 after obtaining base band ciphertext data and obtain after base band ciphertext data are decrypted by AES-128 deciphering module 14 in plain text and be stored in cache module 13，Call CRC correction verification module 12 simultaneously and calculate CRC in plain text and the code value with tail is compared，Last clear data is sent to upper computer end by 3-line serial interface module 00.
As it is shown on figure 3, be that this utility model is based on a kind of structured flowchart in GFSK wireless transceiver integrated circuit.As seen from the figure, this wireless transceiver integrated circuit 40 includes emitter and receptor two parts function, main application is the real-time tranception realizing host computer data, and wherein emitter structures mainly includes base band sending controling circuit 30, analog radio frequency front end transtation mission circuit 32；Receiver architecture mainly includes Baseband Receiver control circuit 31, analog radio frequency front end receiver circuit 33.The wherein host computer CS by three line serial communication interface module 00, SCLK, tri-pins of SDIO and wireless transceiver integrated circuit carry out data transmission controlling with transmitting-receiving, the sending function of wireless transceiver integrated circuit by by data to be sent through base band sending controling circuit 30 process with analog radio frequency front end transtation mission circuit 32 be modulated amplify after be sent to antenna by RFO pin, the receive capabilities of wireless transceiver integrated circuit is to send into Baseband Receiver control circuit 31 by the signal received by antenna after RFI pin input analog radio frequency front end receiver circuit 33 to carry out the process of data solution frame.
The circuit that this utility model is realized is integrated in GFSK wireless transceiver, both can be realized by integrated circuit processing technique, it is possible to realized by PLD, and flexibility ratio is the highest.
It is above specific embodiment of the utility model, all similar changes made according to above-mentioned design, scope of the present utility model ought to be belonged to.
Claims (5)
1. an encryption digital baseband control circuit based on Gaussian Frequency Shift Keying wireless transceiver, it is characterized in that: include base band sending controling circuit and Baseband Receiver control circuit two parts, host computer is connected with described base band sending controling circuit and Baseband Receiver control circuit respectively by one or three line serial communication interface module；Base band sending controling circuit and analog radio frequency front end transtation mission circuit are connected to form the emitter of wireless transceiver；Baseband Receiver control circuit and analog radio frequency front end receiver circuit are connected to form the receptor of wireless transceiver.
Encryption digital baseband control circuit based on Gaussian Frequency Shift Keying wireless transceiver the most according to claim 1, it is characterised in that: described base band sending controling circuit includes framing control module, cache module, encrypting module, CRC generation module, forward error correction coding module, data white noise module, Manchester encoding module, gaussian filtering module, Sigma-Delta modulation module；Wherein, framing control module is connected with described three line serial communication interface module；Framing control module is connected with cache module, encrypting module, CRC generation module respectively；The output of framing control module is connected with the input of forward error correction coding module；The output of forward error correction coding module is connected with the input of data white noise module；The output of data white noise module is connected with Manchester encoding module input；The output of Manchester encoding module is connected with the input of gaussian filtering module；The output of gaussian filtering module is connected with the input of Sigma-Delta modulation module；Sigma-Delta modulation module is to the analogue signal after the output modulation of outside.
Encryption digital baseband control circuit based on Gaussian Frequency Shift Keying wireless transceiver the most according to claim 2, it is characterised in that: described encrypting module uses 128 AES encryption algorithms.
Encryption digital baseband control circuit based on Gaussian Frequency Shift Keying wireless transceiver the most according to claim 1, it is characterised in that: described Baseband Receiver control circuit includes solution frame control module, cache module, deciphering module, CRC correction verification module, decoding FEC module, data solution white noise module, manchester decoder module, baseband data samples module；Wherein, the output of baseband data samples module is connected with the input of manchester decoder module；The output of manchester decoder module is connected with the input of data solution white noise module；The output of data solution white noise module is connected with the input of decoding FEC module；The output of decoding FEC module is connected with the input solving frame control module；Solve frame control module to be connected with cache module, deciphering module, CRC correction verification module respectively；Solve frame control module to be connected with described three line serial communication interface module.
Encryption digital baseband control circuit based on Gaussian Frequency Shift Keying wireless transceiver the most according to claim 4, it is characterised in that: described deciphering module uses 128 AES encryption algorithms.
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| CN201620342546.XU CN205566651U (en) | 2016-04-22 | 2016-04-22 | Encrypt digital baseband control circuit based on gauss frequency shift keying wireless transceiver |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111010686A (en) * | 2018-10-05 | 2020-04-14 | 赛普拉斯半导体公司 | Parallel processing of dirty packets in bluetooth and bluetooth low energy systems |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111010686A (en) * | 2018-10-05 | 2020-04-14 | 赛普拉斯半导体公司 | Parallel processing of dirty packets in bluetooth and bluetooth low energy systems |
| CN111010686B (en) * | 2018-10-05 | 2021-01-08 | 赛普拉斯半导体公司 | Parallel processing of dirty packets in bluetooth and bluetooth low energy systems |
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Granted publication date: 20160907 |