Invertible RS codes based non-binary type-II hybrid ARQ and its performance analysis

Abstract

Reed-Solomon (RS) code based non-binary type-II hybrid automatic-repeat-request (HARQ) was proposed to overcome the shortcomings of low throughput for the binary scenario. The non-binary HARQ encodes the information with RS code, and the information and parity-check parts are transmitted through multi-level modulation, respectively. The invertibility of RS code ensures that the information can be recovered by an error-free parity-check part alone, thus facilitating the increase of throughput. The numerical results show that the non-binary HARQ can get much higher throughput than the binary case in Rician fading channel, while the reliability is still kept at the same level as the binary scenario.