Shadow Fading Correlation on CDMA system

摘要：

Shadowing relevant mathematical models was introduced in this paper. Spatial correlation of shadow fading depends not only on the distances between bases,but also on environment and frequency. Shadow fading can manifest itself in the degradation of the Rice channel when base stations are closely spaced. In Nakagami fading and correlated shadowing environment,the bit error rate (BER) performance of CDMA Systems was observed lower in a correlated shadowing environment compared with the uncorrelated case. Macro-diversity effects are apparent when there are multiple base stations. However,as the number of base stations increases beyond three for a cell,the effectiveness of macro-diversity decreases. Based on cDMA system,the effects of shadowing correlation is analyzed,LS code is more robust than Walsh and Pn code.

关键词： shadowing correlation CDMA system BER.

作者: Zhang Yuyan

作者单位: Beijing University of Posts and Telecommunications No.28 Xinwai Street Xicheng District Beijing,100876,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 3247-3250

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）