载波误差对MC-CDMA系统性能的影响  

THE ANALYSIS OF THE EFFECT OF CARRIER PHASE ERRORS ON MC-CDMA PERFORMANCE

作　　者：张登银[1] 郑宝玉[2] 

机构地区：[1]南京邮电学院计算机科学与技术系,南京210003 [2]南京邮电学院信息工程系,南京210003

出　　处：《电子与信息学报》2003年第10期1392-1397,共6页Journal of Electronics & Information Technology

基　　金：国家"863"计划基金(2002AA712034);广东省自然科学基金(200

摘　　要：该文对下行无线通信信道中 MC-CDMA系统的载波误差性能进行了研究。对接收判决器的输入信噪比(SNR)和判决误码率(BER)进行了详细的理论分析和数值模拟。结果表明,MC-CDMA对载波频率偏移十分敏感,系统性能随载波数量的增加而迅速下降;在最大载荷下,载波相位抖动导致的性能下降与载波数无关。This paper presents the effect of carrier phase error on MC-CDMA performance in downlink mobile communications. Signal-to-Noise Ratio (SNR) and Bit-Error-Rate (BER) is analyzed taking into account the effect of carrier phase error. It is shown that the MC-CDMA system is very sensitive to a carrier frequency offset, and the system performance rapidly degrades and strongly depends on the number of carriers. For a maximal load, the degradation caused by carrier phase jitter is independent of the number of the carriers.

关 键 词：多载波系统 信噪比 误码率 系统性能 MC—CDMA 码分多址 载波误差 

分 类 号：TN914.53[电子电信—通信与信息系统]