【摘要】 针对MC-CDMA系统的反向链路提出了一种动态子载波和功率分配算法。与传统的多载波系统传输方案不同,信号不是通过所有的子载波进行传输的,而是动态的利用信道的频率选择特性来选择优质的传输子载波,同时采用了闭环功率控制算法。理论分析与仿真结果表明,采用动态子载波和功率分配算法后,传统的MC-CDMA系统的误码率性能得到较大程度的改善。更多还原

【Abstract】 This paper proposes a dynamic subchannel and power allocation algorithm for the MC-CDMA system.In the proposed scheme,data is transmitted over the user’s best subcarrier rather than over all subcarriers and power control is applied to the selected subcarrier.Analysis and simulation results show that the proposed scheme outperforms the conventional MC-CDMA in BER performance.更多还原