| 摘要: |
| 本文讨论了直接序列－码分多址（ＤＳ－ＣＤＭＡ）系统中的几种多速率方案，分别分析了它们在加性白高斯噪声和多径瑞利衰落条件下的性能。对这几种方案在瑞利衰落信道下的性能做了仿真，结果表明，多扩频增益方案与多信道方案性能接近，多调制方案在信息速率较高时，性能不如其它方案。 |
| 关键词: DS－CDMA 多址通信 码分多址 多速率 多扩频增益 |
| DOI：10.3969/j.issn.1001-893X. |
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| 基金项目: |
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| Analysis and Comparison of Multirate Schemes in CDMA System |
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| Abstract: |
| Several multirate schemes in DS-CDMA system are discussed in this paper,both AWGN and multipath Rayleigh fading channels are considered.The simulated results show that the multi processing-gain scheme and the multi-channel scheme have almost the same performance,the performance of multi-modulation scheme is much worse than that of the other schemes for the users with high data rates. |
| Key words: Digital Communication,CDMA,Multirate, Multi Processing-gain,Multichannel,Multi-modulation, |
