摘要
针对OFDM-RoF系统中高峰均比与传输链路中各器件的非线性特性等问题,提出了峰均比抑制技术与新型双环数字预失真结构相结合的联合仿真系统,利用MATLAB搭建仿真平台。AM/AM、AM/PM特性、频谱图和星座图仿真结果显示,改进后OFDM-RoF系统的各项性能指标较原有系统有很大的提高。
For the high peak to average power ratio（PAPR） and nonlinear characteristics of each device in transmission link in OFDM-RoF system,a joint simulation system combines PAPR suppression technology with new dual-loop digital pre-distortion structure is established in MATLAB.AM/AM,AM/PM characteristics,spectrum and constellation chart results show the feasibility of the scheme,the improved OFDM-RoF system has better performance compared with unimproved.
出处
《光通信技术》
CSCD
北大核心
2012年第10期57-59,共3页
Optical Communication Technology
基金
国家自然科学基金(60971048)资助
"新一代宽带无线移动通信网"国家科技重大专项(2010ZX03007-002-03)资助
