IEEE802.16d下改进的打孔卷积编码算法及FPGA实现  

Improved Punching Algorithm of Convolution Coding and FPGA Implementation for IEEE802.16d

作　　者：王忠勇[1] 王振义[1] 郭云[1] 

机构地区：[1]郑州大学信息工程学院,河南郑州450001

出　　处：《电视技术》2014年第1期47-49,65,共4页Video Engineering

基　　金：国家自然科学基金项目(61172086)

摘　　要：分析了信道编码在正交频分复用(OFDM)系统中的作用,重点研究了卷积编码原理和具体实现。参考IEEE802.16d标准,结合现有多码速率编码算法,提出了一种新的打孔算法,仿真实验表明该算法降低了系统的误码率;可编程逻辑器件(FPGA)上的硬件在线调试表明实测结果与算法仿真结果吻合,且在提高可靠性的同时,节省了硬件资源。The channel encoding plays a very important part in Orthogonal Frequency Division Multiplexing （OFDM） system, and the principle of con- wdutional coding and its realization are mainly studied in this paper. Referenee to 1EEE802.16d standards, combined with existing multi -code rate en- coding algorithm, a new puncturing algorithm is proposed. Simtdation results show that the system＇ s error rate of the algorithm is reduced. It shows that FPGA hardware online debugging is consistent with the algorithms simulation. The reliability is improved and hardware resources are saved.

关 键 词：IEEE802 16d标准 OFDM 卷积编码 打孔 可编程逻辑器件 

分 类 号：TN92[电子电信—通信与信息系统]