光通信技术, 2020, 44 (5): 58, 网络出版: 2020-05-28
提高 CO-OFDM系统性能的 ACE-IPTS联合算法
ACE-IPTS joint algorithm to improve the performance of CO-OFDM system
正文频分复用 峰均功率比 复杂d 迭代部分传输序列 改进凸集映射星座扩展 orthogonal frequency division multiplexing peak-to-average power ratio complexity iterative partial transmission sequence improved constellation extension projection onto
摘要
为了平衡相干光正文频分复用系统(CO-OFDM)的高峰均功率比(PAPR)和高复杂度,提出了一种基于凸集映射星座扩展(ACE-POCS)和迭代部分传输序列( 改进凸集映射星座扩展迭代部分传输序列IPTS)相结合的新型联合算法 (ACE-IPTS)算法。仿真结果表明:与原始信号相比, ACE-IPTS算法的 PAPR0优化了 4.907dB已在误码率为 10-3时,与 IPTS算法相比,ACE-IPTS、改进 ACE-POCS算法的光信嗓比(OSNR)分别增加了 0.54 dB和 1.04 dB已IPTS、ACE-IPTS和 ACE-POCS算法的运算量分别为 59392、79872和 204800,其中相比 ACE-POCS算法,ACE-IPTS算法计算量降低了 61%。
Abstract
In order to balance the peak-to-average power ratio (PAPR)and high complexity of coherent optical orthogonal fre-quency division multiplexing (CO-OFDM), a novel joint algorithm based on active constellation extension-projection onto con-vex sets (ACE-POCS)and iterative partial transmission sequence (IPTS)is proposed, which is called the improved iterative par- tial transmission sequence of active constellation extension (ACE-IPTS). The simulation results show that, compared with the o-riginal signal, the PAPR0 of ACE-IPTS algorithm is optimized by 4.907 dB. \hen the bit error rate is 10 -3, the optical sig-nal-to-noise ratios (OSNRs)of ACE-IPTS and improved ACE-POCS increase by 0.54 dB and 1.04 dB respectively compared with the IPTS algorithm. The calculation times of IPTS, ACE-IPTS and ACE-POCS are 59392, 79872 and 204800 respectively. Compared with ACE-POCS algorithm, the calculation times of the ACE-IPTS algorithm decreases by 61%.
李婷婷, 童峰山. 提高 CO-OFDM系统性能的 ACE-IPTS联合算法[J]. 光通信技术, 2020, 44(5): 58. LI Tingting, TONG Zhengrong. ACE-IPTS joint algorithm to improve the performance of CO-OFDM system[J]. Optical Communication Technology, 2020, 44(5): 58.