摘要
根据小波的希尔伯特变换与其自身时移正交、与相应的小波及小波的时移正交的特点 ,提出了 3种基于小波及其希尔伯特变换的多载波 CDMA,比较了传统多载波 CDMA与提出的多载波CDMA性能差异 .在 AWGN信道下 ,基于小波及其希尔伯特变换的多载波 CDMA与传统 MC/BPSK- CDMA和 MC/QPSK- CDMA具有相同的 BER,且在不增加带宽的情况下 ,加倍了比特速率 .
Three novel MC CDMA systems, using wavelet and its Hilbert transform for multi carrier CDMA,were presented. Such systems are based on that Hilbert transform of a wavelet is orthogonal to its time shifts and it is also orthogonal to the corresponding wavelet and its translation. We investigated the advantages and performance of the system by the comparison with the conventional MC CDMA system. In the AWGN channel, the systems possess the same BER as the MC/BPSK CDMA and MC/QPSK CDMA system, double the bit rate without increasing the bandwidth than the conventional MC CDMA system.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2002年第3期60-63,共4页
Journal of Beijing University of Posts and Telecommunications
