莱斯衰落信道中混合FDMA/CDMA性能分析  

Performance Analysis of Hybrid FDMA/CDMA in Rician Fading

作　　者：郑海鸥[1] 张乃通[1] 

机构地区：[1]哈尔滨工业大学通信技术研究所,150001

出　　处：《通信技术》2000年第1期5-8,共4页Communications Technology

摘　　要：分析混合频分多址 /码分多址 (FDMA/CDMA)系统在莱斯多径衰落信道的性能 ,并与占据相同带宽的宽带CDMA系统进行比较。系统采用二进制DPSK调制和瑞克 (RAKE)接收机。结果表明 ,直达路径分量较强或信噪比较大时 ,混合系统的性能优于宽带CDMA系统 ,否则 ,宽带CDMA系统最优。In this paper, a hybrid frequency division multiple access/code division multiple access (FDMA/CDMA) system in a Rician fading channel is analysed. The performance of the hybrid system is compared with a wideband CDMA system, which occupies the same total bandwidth. The results show that for DPSK modulation with a RAKE receiver, a hybrid system can have a greater capacity with a strong direct path component or a high signal to noise ratio (SNR). Otherwise, a wideband system remains optimal.

关 键 词：混合频分多址 码分多址 莱斯衰落信道 

分 类 号：TN914.5[电子电信—通信与信息系统] TN929.5[电子电信—信息与通信工程]