Blind Carrier Frequency Offset Estimation Based on Weighted Subspace Projection Approach for Interleaved OFDMA Uplink

被引：2
|
作者：
Chang, Ann-Chen [1 ]
Shen, Chih-Chang [1 ]
机构：
[1] Ling Tung Univ, Dept Informat Technol, Taichung 408, Taiwan
来源：
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES | 2015年 / E98A卷 / 03期
关键词：
interleaved OFDMA; carrier frequency offset; noise-subspace; signal-subspace; SYSTEMS;
D O I：
10.1587/transfun.E98.A.878
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This letter deals with the carrier frequency offsets (CFO) estimation problem for orthogonal frequency division multiple access (OFDMA) uplink systems. Combined with centro-symmetric (CS) trimmed autocorrelation matrix and weighting subspace projection, the proposed estimator has better estimate performance than MVDR, MUSIC, CS-MUSIC, and ESPRIT estimators, especially in relatively less of OFDMA blocks and low SNR situations. Simulation results are presented to verify the efficiency of the proposed estimator.
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页码：878 / 880
页数：3
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