Broadband wireless sensor network transmission scheme based on collaborative communication of amplification forward single node
A sensor network and cooperative communication technology, applied in diversity/multi-antenna systems, preventing/detecting errors through diversity reception, comprehensive factory control, etc., can solve problems that are not suitable for multi-antennas, achieve low information processing complexity, and improve Bit error rate performance, the effect of strong practicability
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[0019] Referring to Fig. 1, the broadband wireless sensor network transmission scheme based on amplification and forwarding single-node cooperative communication of the present invention mainly includes the following steps:
[0020] Step 1: In a broadband wireless sensor network, the transmitter as the source node is equipped with a single antenna, which collects the surrounding environmental information, encodes it into a binary bit stream according to a certain source coding algorithm, and then performs channel coding To increase information redundancy, after interleaving, map to complex points on the constellation diagram.
[0021] The second step: carry out space-frequency coding according to the alamouti structure of the symbol, assuming that an OFDM symbol has 96 symbols, and every 96 symbols of the input is s=[x 1 ,...,x 48 , x 49 ,...,x 96 ], which is encoded into a data block of two slots, the first slot being s 1 = ...
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