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.
出处
《电视技术》
北大核心
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)
