Accidental distributed self-organizing communication method and system based on feedback
A self-organizing communication and distributed technology, applied in the field of communication, can solve problems such as poor performance, no diversity gain, and inability to judge, and achieve the effects of low bit error rate, reduced signaling overhead, and excellent system performance
Inactive Publication Date: 2012-10-17
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
[0061] For RD-STBC / CDD, due to the random way, due to the non-cooperation between nodes (every node makes a decision based on the local information obtained by itself, and they themselves cannot judge whether their decision is right or wrong (good or bad) ), there may be no diversity gain (diversity gain is 1), resulting in poor system performance
[0062] For RD-MIMO, the random weighting method may make the equivalent channel have a strong correlation, resulting in poor performance when the terminal performs MIMO detection
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[0081] The preferred embodiment of the feedback-based random distributed self-organizing communication method of the present invention includes a transmitter and a receiver, the transmitter sends frame information to the receiver in a random weighted manner, and the transmitter A random weight vector storage unit is provided, and after receiving the frame information, the receiver compares the equivalent channel gain of the frame information with the average channel gain of the previously received multi-frame information, and feeds back the comparison result back to said transmitter;
[0082] The transmitter determines the random weighting mode of the next frame information according to the received feedback information, and updates the random weighting vector storage unit in real time.
[0083] The random weight vector storage unit includes a plurality of random weight vectors, and the plurality of random weight vectors are arranged sequentially;
[0084] When the feedback i...
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The invention discloses a randomly distributed type self-organizing communication method based on feedback and a system thereof. The system comprises a transmitter and a receiver, wherein the transmitter transmits frame information to the receiver by a random weighting mode and is provided with a random weighting vector storage unit; after receiving the frame information, the receiver carries outcomparison to equivalent channel gain of the frame information with the average channel gain of multiframe information received before and feedbacks the result of the comparison to the transmitter; and the transmitter determines the random weighting mode of the information of the next frame according to the received feedback information and carries out real-time updating to the random weighting vector storage unit. The invention adopts limited feedback to lead randomly distributed type STBC / GCDD / MIMO to retain good random weighting mode and can reduce the signaling expenditure of relay cooperation; and the system has excellent performance and low error rate.
Description
technical field [0001] The invention relates to a communication technology, in particular to a random distributed self-organizing communication method and system based on feedback. Background technique [0002] In the 21st century, the world has entered the information age, and the generation and transmission of information is very rapid, which has affected all aspects of society. With the growth of economy, the development of society and the improvement of people's material life and spiritual life, people put forward newer and higher requirements for communication. Due to the integration of the Internet and multimedia applications in the next generation of wireless communications, the demand for broadband high-speed data communication services is also increasing, and the available wireless spectrum is limited. Only by significantly improving the utilization of the communication spectrum can the communication capacity be satisfied. demand. [0003] Using MIMO (Multiple Inp...
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IPC IPC(8): H04L1/06H04B7/08H04W28/04H04W84/18
Inventor 何鑫罗涛郝建军刘丹谱尹长川李剑峰乐光新
Owner BEIJING UNIV OF POSTS & TELECOMM