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室内多载波CDMA系统在深度衰落环境下的能量受控均衡策略
Energy controlled equalization of multi-carrier CDMA in an indoor deeply fading channel
【摘要】 多载波CDMA(MC-CDMA)是将多载波调制OFDM与DS-CDMA结合起来的多址访问技术。如何从接收到的信号恢复出发送信号,涉及到频率分集接收和均衡。本文提出的能量受控均衡技术,在多用户的环境下能较好地恢复扩频码的正交性且避免信道深度衰落的影响,而且,实验表明该方法对于不同的信道状况均能很好适应。
【Abstract】 Multi-carrier CDMA(MC-CDMA) is a multi-address access technique which concatenates OFDM and DS-CDMA. How to retrieve transmitted signals from received signals concerned with frequency diversity and equalization. Energy controlled equalization technique, proposed by the author, can well restore the orthogonality of spreading code and avoid effects of deep fading of channel in the case of multi-user environment. And experiments show that it is suitable to different channels.
【关键词】 多载波CDMA;
频率分集;
均衡;
能量受控均衡;
深度衰落;
【Key words】 MC-CDMA; frequency diversity; equalization; energy controlled equalization; deep fading;
【Key words】 MC-CDMA; frequency diversity; equalization; energy controlled equalization; deep fading;
- 【文献出处】 通信学报 ,Journal of China Institute of Communications , 编辑部邮箱 ,2004年01期
- 【分类号】TN929.533
- 【被引频次】6
- 【下载频次】104