Blind estimation of phase offset in OFDM subcarrier for coherent demodulation  

作　　者：Jian Chen Long Yang Ming Li 

机构地区：[1]School of Telecommunications Engineering,Xidian University,Xi'an 710071,E R.China

出　　处：《Journal of Systems Engineering and Electronics》2012年第4期473-480,共8页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China (60972072);the National Science and Technology Major Projects: the New Generation Broadband Wireless Mobile Communication Network (2009ZX03003-03);the "111 Project" of China (B08038)

摘　　要：An adaptive algorithm named low complexity phase off- set estimation （LC-POE） is proposed for orthogonal frequency division multiplexing （OFDM） signals. Depending on the requirement, the estimation procedure is divided into several scales to accelerate the adaptive convergence speed and ensure the estimation accuracy. The true phase offset is estimated through shrinking the detection range and raising the resolution scale step by step. Both the convergence performance and complexity are discussed in the paper. Simulation results show the effectiveness of the proposed algorithm. The LC-POE algorithm is promising in the application of OFDM systems.An adaptive algorithm named low complexity phase off- set estimation （LC-POE） is proposed for orthogonal frequency division multiplexing （OFDM） signals. Depending on the requirement, the estimation procedure is divided into several scales to accelerate the adaptive convergence speed and ensure the estimation accuracy. The true phase offset is estimated through shrinking the detection range and raising the resolution scale step by step. Both the convergence performance and complexity are discussed in the paper. Simulation results show the effectiveness of the proposed algorithm. The LC-POE algorithm is promising in the application of OFDM systems.

关 键 词：phase offset estimation （POE） coherent receiver adaptive phase recovery orthogonal frequency division multiplexing （OFDM）. 

分 类 号：TN929.5[电子电信—通信与信息系统] TN957.3[电子电信—信息与通信工程]