半导体光子学与技术, 2005, 11 (2): 129, 网络出版: 2011-08-19
Performance of Multicarrier CDMA Rake System over Rayleigh Fading Channel
Performance of Multicarrier CDMA Rake System over Rayleigh Fading Channel
摘要
Abstract
Based on the theory of multicarrier(MC) technique and the Rake receiver, a multicarrier DS- CDMA Rake system is proposed, where a data sequence multiplied by a spreading sequence modulates multiple carriers. The receiver provides a Rake for each subcarrier, and the outputs of the Rakes are combined by a maximal-ratio combiner. The average probability of error of the system is derived from an uncorrelated subcarrier and frequency-selective fading channel model. The system performances are evaluated over Rayleigh fading channel with an exponential multipath intensity profile(MIP) and with a rectangular MIP, respectively, when multipath interference is present. It is found that this kind of model has larger superiority in an exponential MIP than in a rectangular MIP.
SONG Li-xin, HUANG Tian-shu, DING Yao-ming. Performance of Multicarrier CDMA Rake System over Rayleigh Fading Channel[J]. 半导体光子学与技术, 2005, 11(2): 129. SONG Li-xin, HUANG Tian-shu, DING Yao-ming. Performance of Multicarrier CDMA Rake System over Rayleigh Fading Channel[J]. Semiconductor Photonics and Technology, 2005, 11(2): 129.