Design of binary multi-code CDMA system with constant amplitude

被引：0
作者：
Kim, JK [1 ]
Kim, SW [1 ]
Yoon, KH [1 ]
Ryu, HG [1 ]
机构：
[1] Chungbuk Natl Univ, Dept Elect Engn, ChungBuk 361763, South Korea
来源：
THIRD INTERNATIONAL CONFERENCE ON INFORMATION TECHNOLOGY AND APPLICATIONS, VOL 2, PROCEEDINGS | 2005年
关键词：
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
High PAPR (peak to average power ratio) happens because of the summation of Walsh codes in the multicode CDAM (code division multiple access) communication system. In this paper, we propose a binary CA-MC-CDAM (constant amplitude multicode code division multiple access) system to solve the high PAPR problem. Unlike the conventional pre-coding method, there is no loss of bandwidth efficiency in the proposed system because the code rate is always 1. The proposed system always generates output signal with 0 dB PAPR.. The proposed binary CA-MC-CDAM system is based on the 212 and 414 binary CA-MC-CDMA systems. The proposed system can be easily extended into a large number of parallel multi-code branches by multiple combinations of these two systems. From the computer simulation results, it can be seen that the proposed binary CA-MC-CDMA system always produces binary constant amplitude output data without any loss of code rate, which cannot be found in the conventional MC-CDMA using a pre-coding method Therefore, it can prevent the nonlinear distortion in the HPA and maximization Of HPA power efficiency can be available in the data transmission using multi-code.
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页码：259 / 264
页数：6
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