Performance of Polar Codes in Cooperative Transmission Systems

The incessant increase in service needs and the number of subscribers is a major subject of concern to operators of mobile communication networks. Cooperative systems are one of the solutions proposed by the communities to meet these needs. In this proposal, we focus on the successive cancellation list (SCL) decoder for polar codes on cooperative communication which is composed of three blocks: the transmission module, a relay block and a reception node. The transmission on the channel is divided into two times. Data coded with a polar code is transmitted simultaneously by the source to the reception system and to the relay bloc. The relay processes its version with an SCL protocol before proceeding to polar coding then transmits them to the destination. After a SCL decoding, the reception uses the MRC (Maximum Ratio Combining) combination method to compare the two versions of the signals and extracts the useful information. We propose a protocol for the construction of polar codes to reach the theoretical capacity in the half-duplex relay channel. We also demonstrate that the polar code (1024, 512) is decoded by the decoder. SC-List of the proposed model with a very large size of the list (L=32) can reach a bit rate of 10
^-4
to 2dB. The simulation results obtained show proven performance compared to other existing codes such as the turbo code and the low-density parity check) codes.