【摘要】 多载波CDMA(MC -CDMA)技术结合了OFDM和CDMA技术的优点 ,在无线衰落信道中传输高速数据时具有突出的性能。但由于MC -CDMA采用了多载波技术 ,载波频率偏移对系统性能的影响非常大。本文对瑞利衰落信道下存在载波频率偏移的MC -CDMA系统性能进行了理论分析并对误码率进行了详细讨论。更多还原

【Abstract】 Multicarrier code division multiple access(MC-CDMA) technology, which combines both advantages of OFDM and CDMA, has superior performance when transmitting high rate data in wireless fading channels. However, carrier frequency offset degrades performance due to the use of multicarrier technology in MC-CDMA systems. In this paper, the effects of carrier frequency offset, which exists on MC-CDMA systems in the Rayleigh fading channel, are theoretically analyzed. Bit error probability of an MC-CDMA system is derived in the presence of carrier frequency offset.更多还原