联合正交调制与网络编码的协作HARQ方案

doi:10.3969/j.issn.1000-436x.2013.10.009

Abstract

Abstract:

In order to improve the transmission efficiency of quadrature modulated cooperative diversity system,the joint network coding and quadrature modulated scheme for coo ve hybrid automatic repeat request (NC-QM-HARQ)was proposed.By introducing network coding in the retransmission,this scheme could retransmit more information at the same time,thus the retransmission time was saved,resulting in the improvement of the throughput.Furthermore,based on the system's Markov state transition model,the fra error rate (FER)and delay performance in the modulation of M-ary pulse amplitude modulation (PAM)were investigated,therefore the closed approximate solution of the throughput was acquired.Simulation results show that,the proposed s outperforms the traditional quadrature modulated coop-erative diversity system HARQ scheme by a throughput gain of approximate 8% in the following scenes:2PAM modula-tion at 5dB SNR,4PAM at 10dB and 8PAM at 15dB.

Key words: cooperative communications, hybrid automatic repeat request, quadrature modulation, network coding, frame error rate, throughput

Xiao-ye SHI,Jian-hua GE,Jing LI,De-feng REN. Joint quadrature modulation and network coding for cooperative Hybrid-ARQ[J]. Journal on Communications, 2013, 34(10): 76-83.

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References 16

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