光学学报, 2012, 32 (3): 0306002, 网络出版: 2012-03-06
基于压扩变换的60 GHz正交频分复用光载无线通信系统实验研究
Experimental Investigation for 60 GHz Radio-Over-Fiber System Employing Orthogonal Frequency-Dioision Multiplexing Format Based on Companding Transform
光通信 正交频分复用光载无线通信系统 压扩变换 峰值平均功率比 optical communication orthogonal frequency-division multiplexing-radio-o companding transform peak-to-average power ratio
摘要
提出并实验研究了在60 GHz正交频分复用(OFDM)光载无线通信(ROF)系统中采用压扩变换技术降低OFDM信号峰值平均功率比(PAPR),并提高系统的接收灵敏度。实验结果表明,携带基于压扩变换的2.5 Gb/s 60 GHz的OFDM-ROF信号经标准单模光纤传输50 km后,在无色散补偿和误码率为10-3的条件下,当入纤功率为12 dBm 时,系统接收灵敏度提高约2.3 dB,并且当互补累积分布函数(CCDF)为10-4时,OFDM信号的PAPR下降约3 dB。
Abstract
A 60 GHz orthogonal frequency-division multiplexing (OFDM) radio-over-fiber (ROF) system based on companding transform technique is proposed and experimently demonstrated to reduce the peak-to-average power ratio (PAPR) of OFDM signals and improve the sensitivity of the receiver. The 2.5 Gb/s 60 GHz OFDM-ROF signals based on companding transform is transmitted over 50-km standard single-mode fiber in the system. The experimental results show that the PAPR of the OFDM signal is decreased by 3 dB at complementary cumulative distribution function (CCDF) level of 10-4, and the receiver sensitivity is improved by 2.3 dB for launch power of 12 dBm at the BER of 10-3 and without dispersion compensation.
陈虹先, 陈林, 余建军, 肖江南, 曹子峥, 李凡. 基于压扩变换的60 GHz正交频分复用光载无线通信系统实验研究[J]. 光学学报, 2012, 32(3): 0306002. Chen Hongxian, Chen Lin, Yu Jianjun, Xiao Jiangnan, Cao Zizheng, Li Fan. Experimental Investigation for 60 GHz Radio-Over-Fiber System Employing Orthogonal Frequency-Dioision Multiplexing Format Based on Companding Transform[J]. Acta Optica Sinica, 2012, 32(3): 0306002.