摘要
多载波CDMA系统由于具有优良的抗干扰能力,已被确立为第3代移动通信的关键技术.MC-CDMA系统对同步误差非常敏感.关于MC-CDMA系统地载波偏移性能分析问题已有许多文献,但主要是基于瑞利分布的衰落信道.通过研究Nakagami-m分布的衰落信道下MC-CDMA系统载波偏移的性能分析问题,给出了等增益合并和最大比合并2种检测技术的误码率公式,并在Matlab环境下进行了仿真,仿真结果表明MC-CDMA系统对频率偏移是非常敏感的.
Owing to the fine anti-jamming ability of multi-carriers CDMA system, it has been established for one of the key technologies of the third generation mobile communication. The MC-CDMA system is extremely sensitive to the synchronization errors, which includs carrier synchronization errors. Many literatures had analyzed the carrier frequency offset performance of the MC-CDMA system, but they mainly based on the Rayleigh fading channel. By researching on the performance of MC-CDMA system carrier frequency offset in the Nakagami-mdistribution fading channel, the bit error ratio（BER） formulae about two kinds of detection technoloies, ieequal gain combing （EGC） and maximal-ratio combining （MRC）were given. The simulation under the Matlab environment indicate that the MC-CDMA system is extremely sensitive to the frequency offset.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2006年第4期574-578,共5页
Journal of Harbin Engineering University
