The IR-HARQ scheme based on precoding in MIMO system
Geng Da · Applied science and technology · 2010
MIMO(multiple input multiple output) system combined with the technology of HARQ(hybrid auto-matic repeat request) can achieve a high transfer rate and improve the system reliability.This paper proposes a scheme for the precoding-based HARQ in the MIMO system,which uses the incremental redundancy technology in-stead of the traditional Chase combining.Incremental redundancy combining can increase the probability of correct decoding mainly by increasingly sending the redundancy of the codeword,and thereby increase data throughput.Simulation results show that the incremental redundancy scheme can bring gain to the system from the perspectives of both BER and information rate.