Joint Carrier Frequency Offset Estimation and Compensation for Downlink Group-Orthogonal Multicarrier CDMA

被引：3
作者：
Yang, Wei [1 ,2 ]
Liu, Junying [2 ]
Xu, Changlong [3 ]
Cheng, Shixin [3 ]
机构：
[1] Beijing Univ Posts & Telecommun, State Key Lab Networking & Switching Technol, Beijing 100876, Peoples R China
[2] Beijing Jiaotong Univ, State Key Lab Rail Traff Control & Safety, Beijing 100044, Peoples R China
[3] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Peoples R China
来源：
WIRELESS PERSONAL COMMUNICATIONS | 2012年 / 62卷 / 01期
关键词：
Group-orthogonal multi-carrier CDMA (GO-MC-CDMA); Carrier frequency offset (CFO); Estimation; Compensation;
D O I：
10.1007/s11277-010-0041-5
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
A carrier frequency offset (CFO) estimation and compensation method is proposal for downlink group-orthogonal multicarrier code-division multiple-access (GO-MC-CDMA) system. The proposed algorithm has taken into consideration both the inherent orthogonality among subcarriers of different groups of GO-MC-CDMA system and the characteristics of Fast Fourier Transform (FFT) demodulation are taken into consideration. The CFO estimation is achieved by searching the value which minimizes the cost function constructed in terms of performing FFT on the interfering signals. Simulation results show that the estimated value of CFO is very close to the real value for the downlink GO-MC-CDMA system. In addition, it is shown that the bit error rate (BER) performance is improved significantly by CFO compensation.
引用
收藏
页码：107 / 116
页数：10
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