CAJ | 학술논문

针对多载波光通信系统中多载波峰值平均功率比较大，导致放大器非线性失真严重的问题，提出一种基于动态反馈的多载波光通信非线性失真抑制算法。该算法采用部分传输序列对子信道的载波相位优化以降低峰值平均功率比发生概率，并对多载波信号噪声进行压扩限幅，接收端采用最大似然准则估算误码率最低部分传输序列相位加权系数，并将该相位加权系数反馈到发送端进行动态补偿，最大程度降低限幅噪声。性能分析和仿真结果表明，与概率类算法相比，该算法有效抑制峰值平均功效比非线性失真与限幅噪声，并降低了系统误码率。
침대다재파광통신계통중다재파봉치평균공솔비교대，도치방대기비선성실진엄중적문제，제출일충기우동태반궤적다재파광통신비선성실진억제산법。해산법채용부분전수서렬대자신도적재파상위우화이강저봉치평균공솔비발생개솔，병대다재파신호조성진행압확한폭，접수단채용최대사연준칙고산오마솔최저부분전수서렬상위가권계수，병장해상위가권계수반궤도발송단진행동태보상，최대정도강저한폭조성。성능분석화방진결과표명，여개솔류산법상비，해산법유효억제봉치평균공효비비선성실진여한폭조성，병강저료계통오마솔。
According to the multi carrier wave communication system in multi carrier peak to average power is relatively large leads to serious problems of nonlinear distortion amplifier, this paper puts forward a dynamic feedback multi carrier optical communication based on nonlinear distortion suppression algorithm. The algorithm uses the carrier phase optimiza?tion of partial transmit sequence on channel to reduce the peak to average power ratio probability, and the multi carrier sig?nal companding limiting, the receiving end criterion of maximum likelihood estimation minimum bit error rate of the partial transmit sequence phase weighting coefficient, and feedback of the phase weighting coefficient to the sending end of dynam?ic compensation, the maximum degree reduce the clipping noise. Performance analysis and simulation results show that, compared with the probability method, the algorithm can effectively inhibit the peak to average power ratio of nonlinear dis?tortion and the clipping noise, and reduce the system bit error rate.