关键词: 无线信息与能量同传技术, 编码协作, 极化码, 乘积码

Abstract: In order to achieve green reliable communication, a product polar coded cooperation system based on simultaneous wireless information and power transfer (SWIPT) is proposed. Firstly, the product polar coded cooperation model based on SWIPT is established. Secondly, the polar code is used as the component code of the product code to construct the product polar code, which is row coded at the source node and column coded at the relay node. Finally, a two-step decoding algorithm with low decoding delay is proposed at the destination node. In the first step, row successive cancellation ( SC) decoding and column SC decoding are performed on the codeword matrix of the received product polar code. If the first step decoding fails, the second step decoding is performed, in which the codeword matrix of the product polar code is transformed into a single line polar code, and then decoded by SC. Theoretical analysis and simulation show that compared with point-to-point system, the product polar coded cooperation based on SWIPT greatly reduces the decoding delay. Compared with the product low density parity check coded cooperative system that uses the belief propagation decoding algorithm, the proposed system has better bit error performance.

Key words: simultaneous wireless information and power transfer technology, coded cooperation, Polar code, product code