摘要
在3GPP LTE物理层协议中,信道质量指示(channel quality indicator,CQI)与混合自动重传请求应答(hybridautomatic repeat-request acknowledgement,HARQ-ACK)均采用了基于Reed-Muller码的超码编码方式。与TD-SCD-MA物理层协议中的TFCI(transport format combination indicator)编码类似,但3GPP LTE系统中的编码矩阵采用了更复杂的交织技术,增加了更多的掩码,这使得接收端的译码难度增大。针对3GPP LTE系统中编码矩阵的特点,利用快速哈达玛变换(fast Hadamard transformation,FHT),给出了一种快速的译码算法。仿真结果表明了该算法的有效性,该算法已应用于LTE-TDD无线综合测试仪表的开发中。
In 3GPP LTE（long term evolution） physical layer protocol,Both CQI（channel quality indicator） and HARQ-ACK（hybrid automatic repeat-request acknowledgement） adopted a method called super code based on Reed-Muller.It is similar to the encoding of TFCI（transport format combination indicator） in TD-SCDMA physical layer protocol.But the coding matrix used more complex interleaver technology and increased more masks in 3GPP LTE.It made receiver＇s decoding difficult.According to the characteristics of coding matrix,this paper used FHT（fast Hadamard transformation） and gave an effective decoding algorithm of Reed-Muller.Simulation results show the effectiveness of the algorithm,which has been applied to LTE-TDD wireless integrated test instrument.
出处
《重庆邮电大学学报（自然科学版）》
北大核心
2010年第4期395-399,410,共6页
Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)
基金
国家科技重大专项(2009ZX03002-009)~~
