部分选择序列算法的FPGA实现  

Realization of partial transmit sequences on FPGA

作　　者：沈亮[1] 于东海[1] 张圣清[1] 邹采荣[2] 

机构地区：[1]东南大学毫米波国家重点实验室,江苏南京210096 [2]东南大学信息处理与应用工程研究中心,江苏南京210096

出　　处：《电力系统通信》2005年第12期60-63,共4页Telecommunications for Electric Power System

摘　　要：OFDM系统由于众多优点成为目前研究的热点之一,但也存在峰均比大的问题,阻碍了其实际应用.文章阐述了部分选择序列(PTS)算法的原理,通过仿真该算法可以有效降低OFDM系统存在的峰均比问题.综合考虑峰均比优化性能以及计算复杂度,给出了合适的参数,并在FPGA上实现了PTS算法,有效降低了实际OFDM系统的峰均比,优化后峰均比相对于原来减小了2～3dB,最后给出了仿真波形结果,验证了设计的可靠性和可行性.OFDM is an attractive technique for achieving high-bit-rate data transmission. However, the potential large PAPR limited its application. In this paper, a method called PTS, which can reduce the PAPR in OFDM system, is introduced. Based on the study of the PTS method, considered the optimizing of PAPR and the calculating complexity, it is finished to realize the PTS on FPGA. With PTS, the modified OFDM signal＇s PAPR is reduced 2 - 3 dB than original. The post-route simulation shows that both calculation speed and precision reaches the anticipation.

关 键 词：正交频分复用 峰均比 部分选择序列(PTS) 

分 类 号：TN914.5[电子电信—通信与信息系统]