CN102082592A - Communication method of fast frequency hopping multi-transmitting and multi-receiving system based on high-speed bus and GPU (Graphic Processing Unit) - Google Patents
Communication method of fast frequency hopping multi-transmitting and multi-receiving system based on high-speed bus and GPU (Graphic Processing Unit) Download PDFInfo
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- CN102082592A CN102082592A CN2010106060281A CN201010606028A CN102082592A CN 102082592 A CN102082592 A CN 102082592A CN 2010106060281 A CN2010106060281 A CN 2010106060281A CN 201010606028 A CN201010606028 A CN 201010606028A CN 102082592 A CN102082592 A CN 102082592A
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Abstract
The invention relates to a communication method of a fast frequency hopping multi-transmitting and multi-receiving system based on a high-speed bus and a GPU (Graphic Processing Unit), which belongs to the technical field of communication. The invention integrates a multi-transmitting and multi-receiving transmission and receiving diversity technology with a fast frequency hopping technology. A parallel processing technology is adopted at a receiving end, and the time needed for synchronizing frequency-hopping signals at the receiving end is greatly shortened by introducing an efficient synchronous algorithm and a pseudo code technology and by adopting the high speed bus and the GPU. Under the adopted design rule of frequency-hopping patterns, signals of a plurality of frequency-hopping patterns can be simultaneously tracked by using a mixer, thereby reducing the cost of the receiving end. A transmitting end launches a plurality of signals using different frequency-hopping patterns simultaneously, and transmitted information can be correctly obtained by synchronizing the multi-path signals simultaneously, therefore, the capturing difficulty and the confidentiality of the signals are improved.
Description
Technical field
The present invention relates to a kind of fast frequency hopping MIMO system communicating method, belong to communication technical field based on high-speed bus and GPU.
Background technology
Frequency hopping is current a kind of spread spectrum commonly used.In frequency hopping communications, receiving-transmitting sides all carries out Discrete Change according to being scheduled to the carrier wave of rule to transmission signals.Frequency hopping has good interference free performance, has become one of core of military antijam communication technology.According to the relation of frequency hopping rate and character rate, frequency hopping can be further divided into slow frequency hopping technology and fast frequency hopping technology.Slow frequency hopping (SFH) is meant that frequency hopping rate is lower than character rate, and both a plurality of symbols are by a carrier frequency transmission.Fast frequency hopping (FFH) is meant frequency hopping rate than character rate height, both the interior repeatedly saltus step of carrier frequency of symbol.By carry out repeatedly frequency hopping in a symbol period, fast frequency hopping can be realized frequency diversity gain.
MIMO (MIMO) technology can obtain the high spatial diversity, thereby improve channel capacity under the prerequisite that does not need the broadening spectral bandwidth by making full use of space resources as one of key technology of future broadband wireless communication systems.MIMO uses a plurality of transmitting antennas and reception antenna to come received signal, can introduce technology such as beam shaping, space-time code at transmitting terminal, and can received signal be merged by certain algorithm at receiving terminal, improves system reliability.
Traditional frequency-hopping system adopts single transmit antenna list reception antenna structure usually, a little less than the anti-channel fading ability, and can't the implementation space diversity.And its availability of frequency spectrum is lower, under the situation of current frequency spectrum resource growing tension, has limited the application of frequency-hopping system greatly.
High-speed bus is an example with the PCIE bus, compares the shared parallel architecture of traditional PCI bus, has all distributed special-purpose connection for each equipment in the system, rather than whole bus is sent bandwidth request, can be with very high rate transmissioning data.Cooperate high speed GPU, demodulation when can realize the multiband Frequency Hopping Signal improves the availability of frequency spectrum, and the some factors that make above-mentioned restriction frequency-hopping system use are suitably alleviated under specific circumstances and solved.
Summary of the invention
The deficiency that the objective of the invention is to improve existing frequency hopping can't the implementation space diversity, the availability of frequency spectrum is lower, a kind of fast frequency hopping MIMO (MIMO) system communicating method based on high-speed bus and GPU is provided, to realize more high diversity and more high spectrum utilization, can improve diversity order, overcome channel fading and improve system reliability.
The objective of the invention is to be achieved through the following technical solutions.
A kind of fast frequency hopping mimo system communication means of the present invention based on high-speed bus and GPU, concrete steps are as follows:
Step 1, the source signal that modulation is ready for sending.If source signal is an one-channel signal, then modulate through string and after being converted to multiple signals; If source signal is multiple signals, then directly modulate.
Step 2, the multiple signals after the modulation that step 1 is obtained carry out mixing to it respectively with a plurality of fast frequency-hopped frequency mixers, and the frequency hopping pattern difference of each frequency mixer obtains the multichannel mixed frequency signal thus.Wherein, the selection principle of frequency hopping pattern is: synchronization can not have a plurality of frequency mixers to use same frequency that signal is carried out mixing, and the frequency hopping speed of each frequency mixer is identical.
Step 3, the multichannel mixed frequency signal that step 2 is obtained be via the multichannel antenna transmission, wherein the corresponding transmitting antenna of each road signal.
Step 4 after many reception antennas receive the signal that step 3 sends, is used GPU parallel processing and high-speed bus transmission technology, adopts and realizes that synchronous algorithm reaches synchronous fast; The design frequency hopping pattern corresponding with each branch road of transmitting terminal carries out down-conversion then.
The frequency hopping pattern specific design rule of receiving terminal is:
Receiving terminal with a frequency mixer by than transmitting terminal faster frequency hopping speed receive that to manying a reception antenna frequency hopping pattern of signal follows the trail of and down-conversion simultaneously.The frequency hopping of frequency mixer frequency hopping pattern changes the carrier frequency of each road received signal of traversal in each transmitting terminal carrier jumping frequency cycle, in a hop period, finish down-conversion operation, realize the down-conversion of each receiving branch of receiving terminal each road transmitting antenna signal transmitted with this to each road received signal.
Step 5, each the road signal after receiving terminal uses high specific merging (MRC) method to step 4 down-conversion is handled, and obtains court verdict with the maximum likelihood decision device again, finally by the inverse mapping reduction information that information source transmitted.
Beneficial effect
1. the present invention adopts MIMO transmission, reception diversity technology to combine with fast frequency-hopped technology, when the system that makes can obtain frequency gain that fast frequency hopping brings, can also obtain spatial gain; The gain exponent number of overall system is L (every symbol frequency hopping number of times) * T (number of transmit antennas) * R (reception antenna quantity); This communication system the antagonism channel fading and anti-interference on performance good.
2. the present invention adopts parallel processing technique at receiving terminal, by introducing high efficiency synchronous algorithm and pseudo-code technology, and uses high-speed bus and GPU, at receiving terminal Frequency Hopping Signal is carried out the synchronous required time and can reduce greatly.Under the frequency hopping pattern design rule that the present invention adopts, can realize the signal of a plurality of different frequency hopping patterns being followed the tracks of simultaneously with a frequency mixer, reduced the cost of receiving terminal.
3. the present invention carries out the signal transmission of different frequency hopping patterns by many transmitting antennas in the same frequency spectrum bandwidth, can significantly improve band efficiency (being directly proportional with number of transmit antennas in theory).The signal that different antennae sends greatly reduces band interference owing to frequency hopping pattern is different.
4. in the present invention, transmitting terminal is launched the signal of the different frequency hopping patterns of a plurality of uses simultaneously, needs simultaneously multiple signals to be carried out could correctly obtaining transmission information synchronously, has increased and has caught difficulty, has improved the confidentiality of signal.
Description of drawings
Fig. 1 is the flow chart of fast frequency hopping MIMO system communicating method of the present invention;
Fig. 2 is based on the communication system architecture figure of the fast frequency hopping mimo system of high-speed bus and GPU in the embodiment;
Fig. 3 is a transmitting terminal system construction drawing in the embodiment;
Fig. 4 is a receiving terminal system structure chart in the embodiment;
Fig. 5 is a transmitting terminal frequency mixer frequency hopping pattern in the embodiment, has specifically represented the diagrammatic representation of the corresponding frequency hopping pattern of two pseudo-random code generators PN sequence separately;
Fig. 6 is a receiving terminal frequency mixer frequency hopping pattern in the embodiment, has specifically represented the diagrammatic representation of the corresponding frequency hopping pattern of following mixing PN sequence that the receiving terminal pseudo-random code generator produces.
Embodiment
In order to make that system configuration of the present invention, used technology and innovative characteristics are easier to understand,, further the present invention is set forth below in conjunction with drawings and Examples.Present embodiment is modulated to adopt PSK, two transmitting antenna double reception antennas, and jumping the fast frequency hopping systems with every symbol 4 is example.
The modulation system parameter is provided with:
Present embodiment adopts 4FSK as modulation system, and data bit period was made as 0.001 second, and then the code symbol period of corresponding M FSK is 0.002.MFSK signal carrier frequency centre frequency is made as 50000Hz, and the frequency interval of single carrier frequency is got fs=1/Ts=500Hz.
The fast frequency hopping parameter is provided with:
Four frequency hoppings in every symbol period, frequency hopping frequency number is made as 80.Frequency Hopping Signal centre frequency fh is taken as 100000Hz.
Channel is set to Rayleigh channel, and signal to noise ratio is made as 0.
Because receiving terminal need be followed the trail of with synchronously simultaneously to the multichannel Frequency Hopping Signal in the present embodiment, needs to use fast simultaneous techniques, so need use high-speed bus and GPU could satisfy the arithmetic speed requirement at receiving terminal.Present embodiment adopts PCIE high-speed bus and Nvidia Tesla 2050 GPU at receiving terminal, to reach enough fast frequency conversion and synchronizing speed.
According to the technical scheme described in the summary of the invention, send double receptions at present embodiment two and require designed communication system general structure as shown in Figure 1.Wherein, the system configuration of transmitting terminal and receiving terminal is respectively as Fig. 2, shown in Figure 3.The pseudo noise code that three pseudo-random sequence generators (transmitting terminal two with one of receiving terminal) take place is different mutually, and specifically create-rule is as follows:
Two pseudo-noise code generators of transmitting terminal send the pseudo noise code that differs from one another with identical bit rate.Be located at and begin in the carrier cycle pseudo noise code that two pseudo-noise code generators produce constantly from t and be respectively PN
1=[s
T, 1,1, s
T, 1,2... s
T, 1, L, s
T+1,1,1, s
T+1,1,2... s
T+1,1, L...] and (L is every symbol duration introskip frequency number) and PN
2=[s
T, 2,1, S
T, 2,2... s
T, 2, L, s
T+1,2,1, s
T+1,2,2... s
T+1,2, L...], then the pseudo-noise code generator of receiving terminal produces pseudo noise code with the bit rate of twice, and jumps time T at each
cIn the combination of the pseudo noise code that produces for two pseudo-noise code generators of transmitting terminal (begin PN constantly from t
r=[s
T, 1,1, s
T, 1,2... s
T, 1, L, s
T, 2,1, s
T, 2,2... s
T, 2, L, s
T+1,1,1, s
T+1,1,2... s
T+1,1, L, s
T+1,2,1, s
T+1,2,2... s
T+1,2, L...]), frequency hopping pattern such as Fig. 4 of transmitting terminal of Sheng Chenging and receiving terminal frequency mixer are shown in Figure 5 thus.
The frequency hopping pattern that uses above-mentioned pseudo noise code to generate is controlled each frequency mixer and is carried out frequency hopping, can be implemented in receiving terminal and the two-way transmitting antenna is signaled follows the trail of simultaneously and time mixing operation, thereby obtain institute's photos and sending messages respectively.In order to reduce band interference, two frequency hopping patterns of the transmitting terminal signal of present embodiment design do not use same frequency at synchronization.
After receiving terminal descends mixing to the signal of being received with a frequency mixer, distinguish the signal of the corresponding different frequency hopping patterns that many antennas transmit.With MRC it is handled again and obtain composite signal, deliver to the maximum likelihood decision device and adjudicate, finally obtain transmission information by inverse mapping.
Use the inventive method to receive and dispatch test in the present embodiment, the gained error rate is 0.0051, and transmission bit rate is 2000bps.Is 0.0033 and use traditional single-shot list receiving method with the same rate transmissioning data gained error rate, and transmission bit rate is 1000bps.Prove that thus the inventive method can finish MIMO communication fast, remarkable raising band efficiency, and have better anti-disturbance performance.
What more than enumerate only is a kind of embodiments of the invention that are suitable for, and is not to limit example, and the protection range of scope of the present invention is not by this qualification.The present invention is contained within spirit and the principle, any modification of being done, improves and is equal to replacement or the like, all should belong to protection scope of the present invention.
Claims (2)
1. fast frequency hopping MIMO system communicating method based on high-speed bus and GPU is characterized in that: specifically realize by following steps:
Step 1, the source signal that modulation is ready for sending; If source signal is an one-channel signal, then modulate through string and after being converted to multiple signals; If source signal is multiple signals, then directly modulate;
Step 2, the multiple signals after the modulation that step 1 is obtained carry out mixing to it respectively with a plurality of fast frequency-hopped frequency mixers, and the frequency hopping pattern difference of each frequency mixer obtains the multichannel mixed frequency signal thus;
Step 3, the multichannel mixed frequency signal that step 2 is obtained be via the multichannel antenna transmission, wherein the corresponding transmitting antenna of each road signal;
Step 4 after many reception antennas receive the signal that step 3 sends, is used GPU parallel processing and high-speed bus transmission technology, adopts and realizes that synchronous algorithm reaches synchronous fast; Adopt the frequency hopping pattern corresponding to carry out down-conversion then with each branch road of transmitting terminal;
The frequency hopping pattern that receiving terminal adopted is:
Receiving terminal with a frequency mixer by than transmitting terminal faster frequency hopping speed receive that to manying a reception antenna frequency hopping pattern of signal follows the trail of and down-conversion simultaneously; The frequency hopping of frequency mixer frequency hopping pattern changes the carrier frequency that uses each road received signal in each transmitting terminal carrier jumping frequency cycle, and in a hop period, finish down-conversion operation to each road received signal, realize the down-conversion of each receiving branch of receiving terminal with this to each road transmitting antenna signal transmitted;
Step 5, each the road signal after receiving terminal uses high specific merging method to step 4 down-conversion is handled, and obtains court verdict with the maximum likelihood decision device again, finally by the inverse mapping reduction information that information source transmitted.
2. a kind of fast frequency hopping MIMO system communicating method according to claim 1 based on high-speed bus and GPU, it is characterized in that: the selection principle of frequency hopping pattern is in the described step 2: synchronization can not have a plurality of frequency mixers to use same frequency that signal is carried out mixing, and the frequency hopping speed of each frequency mixer is identical.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647258A (en) * | 2012-03-31 | 2012-08-22 | 电子科技大学 | Cross-layer enhancing safety processing method of wireless communication MIMO (Multi-Input Multi-Output) system |
| CN105009469A (en) * | 2013-03-15 | 2015-10-28 | 高通股份有限公司 | Low energy signaling scheme for beacon fencing applications |
| CN105071819A (en) * | 2015-07-17 | 2015-11-18 | 西安空间无线电技术研究所 | Multicarrier variable rate receiving processing method in fast frequency hopping system |
| CN108900222A (en) * | 2018-07-25 | 2018-11-27 | 南京邮电大学 | A kind of frequency-hopping communication method based on mimo system |
| CN113131966A (en) * | 2021-04-15 | 2021-07-16 | 上海金卓科技有限公司 | Data sending and receiving method and device for wireless communication |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1893410A (en) * | 2005-07-01 | 2007-01-10 | 华为技术有限公司 | Method for realizing frequency multiplexing and modulating of orthogonal frequency-dividing multiplexing system and accessing equipment |
| CN1898888A (en) * | 2003-12-24 | 2007-01-17 | 日本电气株式会社 | Wireless communication system, wireless communication apparatus, and resource assignment method used therein |
| US20090278742A1 (en) * | 2008-05-07 | 2009-11-12 | Mehta Neelesh B | Antenna Selection with Frequency-Hopped Sounding Reference Signals |
| CN101719308A (en) * | 2009-11-06 | 2010-06-02 | 北京航空航天大学 | Method for realizing high anti-interference unmanned aerial vehicle remote control data link |
-
2010
- 2010-12-15 CN CN2010106060281A patent/CN102082592A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1898888A (en) * | 2003-12-24 | 2007-01-17 | 日本电气株式会社 | Wireless communication system, wireless communication apparatus, and resource assignment method used therein |
| CN1893410A (en) * | 2005-07-01 | 2007-01-10 | 华为技术有限公司 | Method for realizing frequency multiplexing and modulating of orthogonal frequency-dividing multiplexing system and accessing equipment |
| US20090278742A1 (en) * | 2008-05-07 | 2009-11-12 | Mehta Neelesh B | Antenna Selection with Frequency-Hopped Sounding Reference Signals |
| CN101719308A (en) * | 2009-11-06 | 2010-06-02 | 北京航空航天大学 | Method for realizing high anti-interference unmanned aerial vehicle remote control data link |
Non-Patent Citations (1)
| Title |
|---|
| 杨坤: "跳频抗干扰系统的空时编码技术研究", 《中国优秀硕士学位论文全文数据库》, no. 11, 15 November 2009 (2009-11-15) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647258A (en) * | 2012-03-31 | 2012-08-22 | 电子科技大学 | Cross-layer enhancing safety processing method of wireless communication MIMO (Multi-Input Multi-Output) system |
| CN102647258B (en) * | 2012-03-31 | 2014-11-05 | 电子科技大学 | Cross-layer enhancing safety processing method of wireless communication MIMO (Multi-Input Multi-Output) system |
| CN105009469A (en) * | 2013-03-15 | 2015-10-28 | 高通股份有限公司 | Low energy signaling scheme for beacon fencing applications |
| CN105009469B (en) * | 2013-03-15 | 2016-11-30 | 高通股份有限公司 | Low-yield signaling schemes for the application of beacon fence |
| CN105071819A (en) * | 2015-07-17 | 2015-11-18 | 西安空间无线电技术研究所 | Multicarrier variable rate receiving processing method in fast frequency hopping system |
| CN108900222A (en) * | 2018-07-25 | 2018-11-27 | 南京邮电大学 | A kind of frequency-hopping communication method based on mimo system |
| CN113131966A (en) * | 2021-04-15 | 2021-07-16 | 上海金卓科技有限公司 | Data sending and receiving method and device for wireless communication |
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Application publication date: 20110601 |