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斜纹结构的编织卷积码性能分析与仿真
Performance and simulation of WCCs with Twill structure
【摘要】 主要研究了斜纹结构的编织卷积码(WCCs)在编码设计中活性距离和交织器对其性能的影响。通过系统仿真,结果表明在AWGN信道下,发现斜纹WCCs的系统性能将受到系统传输帧长、编码器归零方式及编码器个数的影响,因此适当地选择了编码器和交织器,能使其误码性能更加优越,且没有错误地板效应。
【Abstract】 In this paper, the anthors analyze the influence of the active distance and interleaver of WCCs with Twill structure on it’s error-correcting performance. Finally, simulation results of WCCs with Twill structure over AWGN show that BER performance is affected greatly by the transmission frame length, return-to-zero mode and the number of encoders, and also indicate that proper selection of encoder and interleaver can improve error-correcting performance greatly and has no error floor.
【关键词】 斜纹结构;
迭代译码;
归零方式;
错误地板;
【Key words】 Twill structure; iterative decoding; return-to-zero mode; error floor;
【Key words】 Twill structure; iterative decoding; return-to-zero mode; error floor;
【基金】 国家自然科学基金资助项目(60272005);国家“863”资助项目(2001AA123061)
- 【文献出处】 重庆邮电学院学报(自然科学版) ,Journal of Chongqing University of Posts and Telecommunications , 编辑部邮箱 ,2005年04期
- 【分类号】TN911.22
- 【被引频次】4
- 【下载频次】71