An Enhanced Hybrid ARQ Technique Employing Signal Constellation Rearrangement with 64QAM

摘要：

As one of key techniques of 3G and future mobilecommunication system, link adaptation can significantlyincrease the spectral efficiency and render various levels ofservices by changing available power, data rate, modulationand channel coding parameters. In this paper, we focus on64QAM Gray constellation. A novel algorithm for searchingenhanced Hybrid ARQ (HARQ) schemes with constellationrearrangement (CoRe) is proposed, which is suitable forarbitrary retransmission times. The advanced HARQstrategies got by computer search can efficiently reduce thereliability variances of different bits after soft combining.Simulation results show that the novel approach can achievebetter BER and throughput performance than traditional ones.

作者: Jia Minli He Zunwen Kuang Jingming Fei Zesong

作者单位: Dept.of Electronic Engineer Beijing Institute of Technology Beijing, China

会议类型: 国际会议

会议名称: 2007年通信、电路与系统国际会议(2007 International Conference on Communications,Circuits and Systems Proceedings)

会议地点: 日本福冈

会议语种:英文

在线出版日期: 2007-07-11（万方平台首次上网日期，不代表论文的发表时间）