摘要
基于IEEE 802.11a标准,设计并实现了一个新的解码器方案。方案中采用了软判决解映射;提出了一种并行添零方法;设计了一种全并行的Viterbi译码器,采用矢量差的"1范数"代替欧氏距离作为软判决译码距离。可以保证译码器性能、明显提高译码速度,并有效降低硬件实现的复杂度。通过计算机仿真和硬件调试,验证了该解码器的良好性能。
Based on the IEEE 802. 11 a standard, a new scheme of decoder is designed and realized. In the scheme soft decision demapping is adopted and a parallel method is proposed to add zero. A completely parallel Viterbi decoder is designed in which 1_norm is adopted to replace Euclidean distance as soft decision distance. The performance of the decoder is satisfactory with an obvious improvement in the speed of data decoding a drastic reduction in hardware complexity, which is verified by computer simulation and hardware debugsing,
出处
《电子科技》
2007年第8期7-11,20,共6页
Electronic Science and Technology
作者简介
孙雪艳(1980-),女,硕士研究生。研究方向为:数字通信,信道编译码技术。
李兵兵(1955-),男,教授,硕士生导师。研究方向:数字通信与多速率数字信号处理。
刘鹏(1978-),男,博士。研究方向:宽带无线通信技术,OFDM技术等。
李俊(1982-),男,硕士研究生。研究方向:数字通信。