Effects of carrier frequency offset on the average effective SNR and the average BER for asynchronous MC-CDMA uplink systems with a guard period

被引：5
|
作者：
Ko, Kyunbyoung [2 ]
Woo, Choongchae [1 ]
机构：
[1] Hanseo Univ, Dept Elect & Comp Engn, Media Lab, Seosan 356706, Chungnam, South Korea
[2] Chungju Natl Univ, Dept Control & Instrumentat Engn, CSPL, Chungju Si 380702, Chungbuk, South Korea
来源：
INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS | 2011年 / 24卷 / 12期
基金：
新加坡国家研究基金会;
关键词：
asynchronous MC-CDMA; residual CFO; frequency-selective multipath fading channels; SNR loss; ORTHOGONAL MULTICARRIER CDMA; PERFORMANCE ANALYSIS; DS-CDMA; SENSITIVITY; DOWNLINK;
D O I：
10.1002/dac.1232
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents an analysis of asynchronous multicarrier-code division multiple access (MC-CDMA) systems over frequency-selective multipath fading channels when the carrier frequency offsets (CFOs) of all users are random variables and the frequency offset for the desired user is compensated. The effect of residual CFO on the average bit error rate (BER) is evaluated by the semi-analytical method, then the approximated BER performance is obtained as a closed-form expression. Moreover, the signal-to-noise ratio (SNR) loss caused by residual CFO is evaluated. Derived results show that the performance degradation due to residual frequency offset is negligible if the estimation error of CFO for the desired user is less than the normalized value of 10(-1). Copyright (C) 2011 John Wiley & Sons, Ltd.
引用
收藏
页码：1565 / 1583
页数：19
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