多载波CDMA在Rician衰落信道的性能研究

详细信息

Performance Analysis of Multi carrier CDMA in a Non Selective Rician Fading Channel

摘要: 在一种同步OFDM-CDMA的系统模型基础上,对频率非选择性Rician衰落信道的误码率性能进行了研究,分析和数值结果说明由于多径的存在系统误码率性能迅速下降,而且当直射成分很小时,信道为Rayleig h信道,系统性能变为最差。
- 码分多址 /
- 正交频分多址 /
- 正交频分复用-直接序列扩频-码分多址 /
- Rician衰落信道
Abstract: Orthogonal frequency division multiplexing (OFDM) is a general technique for data paralled transmission on multiple carriers.One principal advantage of OFDM is its utility for transmission at nearly optimum performance in unequalized channels and in multipath channesl.OFDM-CDMA is a new concept that applies the orthogonal multicarrier technique to direct sequence CDMA systems.A synchronous OFDM-CDMA model is presented in this paper,and the performance of this system in a non selective Rician fading channel is also evaluated.The numerical results show the system bit error probability degrades rapidly due to multipath component.
- code division muptiple access /
- orthogonal frequency division multiplexing /
- OFDM-CDMA /
- non-selective Ricain fading channel