用DFT扩频码降低MC/DS CDMA系统的PAPR

Third International Conference on Information Technology and Applications (ICITA'05) Pub Date : 2005-07-04 DOI:10.1109/ICITA.2005.205

Yingshan Li, Ju-Hyun Kyung, Jong-Won Son, H. Ryu

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引用次数: 7

摘要

多载波直接序列码分多址(MC/DS CDMA)技术是实现反向链路移动传输的最佳技术之一。然而，由于MC/DS CDMA系统的多载波特性，可能会产生较大的峰值平均比。本文采用离散傅立叶变换扩频码有效地降低了高PAPR。结果表明，在12个数据载波的MC/DS CDMA系统中，在CCDF为10 -3的情况下，可以实现约6 dB的PAPR。与传统的MC/DS CDMA系统相比，采用非线性HPA可以显著提高系统的SER性能

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PAPR Reduction in MC/DS CDMA System by DFT Spreading Codes

Multi-carrier direct sequence code division multiple access (MC/DS CDMA) technique is one of the optimum technique for the reverse link mobile transmission. However, because of multi-carrier property, large PAPR (peak to average ratio) may be generated in MC/DS CDMA system. In this paper, DFT spreading code is applied to reduce high PAPR efficiently. As results, about 6 dB PAPR can be achieved at CCDF of 10 -3 in the MC/DS CDMA system with 12 data carriers. SER performance can be improved significantly compared with conventional MC/DS CDMA system with nonlinear HPA

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Third International Conference on Information Technology and Applications (ICITA'05)

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