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一种高频段正交频分复用系统中相位噪声消除算法
引用本文:杜文,蒋铃鸽,何晨.一种高频段正交频分复用系统中相位噪声消除算法[J].上海交通大学学报,2011,45(7):1058-1062.
作者姓名:杜文  蒋铃鸽  何晨
作者单位:(上海交通大学 电子信息与电气工程学院, 上海 200240)
基金项目:国家高技术研究发展计划(863)项目(2009AA011505); 国家自然科学基金资助项目(60772100)
摘    要:针对高频段正交频分复用(OFDM)无线通信中相位噪声功率增加导致系统性能降低,提出了一种低导频开销的相位噪声消除算法.通过分析高频段OFDM系统信道传递函数和相位噪声特性,在OFDM导频时隙上同时估计信道传递函数与相位噪声;在导频子载波假定信道不变,连续估计相位噪声以抑制相位噪声引起的载波间干扰.仿真结果表明,在大相位噪声下,该算法降低了导频开销,同时有效消除相位噪声,提高了信道传递函数估计的准确度.

关 键 词:高频段    正交频分复用    相位噪声    载波间干扰  
收稿时间:2010-06-27

An Algorithm for Phase Noise Mitigation in High-Frequency OFDM
DU Wen,JIANG Ling-ge,HE Chen.An Algorithm for Phase Noise Mitigation in High-Frequency OFDM[J].Journal of Shanghai Jiaotong University,2011,45(7):1058-1062.
Authors:DU Wen  JIANG Ling-ge  HE Chen
Institution:(School of Electronic, Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
Abstract:The increasing of phase noise in high-frequency orthogonal frequency division multiplexing wireless communication system degrades the system performance.A joint channel transfer function and phase noise estimation algorithm with low pilot consumption was proposed to resolve the conflict.By analyzing the characteristics of channel transfer function and phase noise,the algorithm is divided into two steps: on OFDM pilot time-slot,estimate channel transfer function and phase noise;on pilot sub-carriers,estimate...
Keywords:high-frequency  orthogonal frequency division multiplexing(OFDM)  phase noise(PHN)  inter-carrier interference  
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