A novel joint technique for PAPR reduction in CO-OFDM systems  

作　　者：刘颖慧 童峥嵘 曹晔 张卫华 李岚 

机构地区：[1]Key Laboratory of Film Electronics and Communication Devices Tianjin University of Technology

出　　处：《Optoelectronics Letters》2014年第4期277-280,共4页光电子快报（英文版）

基　　金：supported by the National High Technology Research and Development Program of China(No.2013AA014201);the Natural Science Foundation of Tianjin(No.13QNJC01800)

摘　　要：For the high peak-to-average power ratio(PAPR) of coherent optical orthogonal frequency division multiplexing(CO-OFDM) system, a novel joint technique which is the combination of iterative partial transmit sequence(IPTS) and clipping technique is proposed. Simulation results demonstrate that the PAPR and bit error rate(BER) performance of the proposed technique both outperform those of the single techniques. Under the same conditions, the threshold value and peak power of IPTS clipping joint technique are optimized by 3.44 dB and 0.86 dBm compared with those of IPTS techinque, respectively. At the BER of 10-3, the optical signal to noise ratios(OSNRs) of the novel joint technique after 320 km and 400 km single-mode fiber(SMF) transmission are 0.68 dB and 1.18 dB smaller than those of clipping technique, respectively.For the high peak-to-average power ratio （PAPR） of coherent optical orthogonal frequency division multiplexing （CO-OFDM） system, a novel joint technique which is the combination of iterative partial transmit sequence （IPTS） and clipping technique is proposed. Simulation results demonstrate that the PAPR and bit error rate （BER） performance of the proposed technique both outperform those of the single techniques. Under the same conditions, the threshold value and peak power of IPTS clipping joint technique are optimized by 3.44 dB and 0.86 dBm compared with those of IPTS techinque, respectively. At the BER of 103, the optical signal to noise ratios （OSNRs） of the novel joint technique after 320 km and 400 km single-mode fiber （SMF） transmission are 0.68 dB and 1.18 dB smaller than those of clipping technique, respectively.

关 键 词：OFDM系统 PAPR 技术 峰均功率比 正交频分复用 分贝比 仿真结果 峰值功率 

分 类 号：TN929.1[电子电信—通信与信息系统]