上行通信系统的GDMA, LDS-CDMA和HDS-CDMA

Mao-Chao Lin, Shih-Kai Lee, H. Fan, Yi-Hua Chen
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引用次数: 0

摘要

增分多址(GDMA)和低密度扩频码分多址(LDS-CDMA)是适用于上行通信系统的非正交多址方式,每个用户通过独立的衰落信道向公共基站发送报文。我们可以将LDS-CDMA方案解释为几个相互依赖的GDMA系统的组合,其中GDMA系统应用于每个资源。LDS-CDMA的原始消息传递也可以解释为在各种GDMA系统之间传递的消息,以使用依赖关系。我们将解释扩展到构建高密度(HDS) CDMA方案。HDS-CDMA方案的优点是需要较少的资源或更好的错误性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
GDMA, LDS-CDMA, and HDS-CDMA for Uplink Communication Systems
Gain division multiple access (GDMA) and low-density spreading code division multiple access (LDS-CDMA) are non-orthogonal multiple access methods that can be applied to the uplink communication system, where each user transmits its message to a common base station through an independent fading channel. We may interpret the LDS-CDMA scheme as a combination of several dependent GDMA systems, where a GDMA system is applied to each resource. The original message passing for LDS-CDMA may also be interpreted as the message passing among various GDMA systems to employ the dependency. We extend the interpretation to construct high-density (HDS) CDMA schemes. The advantage of HDS-CDMA schemes can be the requirement of a smaller number of resources or better error performances.
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