Data transmission method for wireless cooperative relay system
A data transmission method and cooperative relay technology, applied in the field of computer network communication, can solve the problems of channel capacity waste and inefficiency, and achieve the effect of improving the erasure ability.
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[0018] A typical application scenario of the present invention is three-node cooperative relay. Through the joint setting of node transmission power and receiving sensitivity, the coverage of the signal is just satisfied. The two nodes that initiate data transmission are mutually hidden terminals. They cannot perceive each other's existence and can only communicate with each other with the assistance of relay nodes. .
[0019] First, digital fountain code encoding is performed on the application layer data of the source node. The digital fountain code was originally designed for the deletion channel, and its biggest feature is the code rate independence, that is, the number of coded symbols that the coder can generate is infinite and flexible, and the decoder only needs to receive any sufficient number of coded symbols Symbols can restore data. Therefore, regardless of the deletion probability of the deletion channel, the encoder can continuously generate encoding symbols un...
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