文章基本信息

标题：An Improved Base Station Modulator Design for a CDMA Mobile System
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作者：Kim, Jin-Up ; Uh, Yoon ; Kweon, Hye-Yeoun 等
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：1997
卷号：18
期号：4
页码：215-215
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：We propose a new method to eliminate completely the redundant elements in a CDMA (code division multiple access) mobile system. First, we define multilevel logic operation (MLO), which is a new concept to deal with the multilevel logic signals. We prove that the conventional binary logic concept is a subset of the MLO concept. The multilevel logic signal can be directly controlled by using this MLO in place of the binary operation. We applied the MLO to the CDMA base station modulator (BSM) in order to reduce the hardware complexity. In the case of a 3-sectorized cell, this method helps reduce the complexity down the level of below 1% of the conventional CDMA BSM for spreading and filtering, and to 50% for Walsh covering.