Load Adaptation Scheme to Improve the BER Performance of Multi-Block/Multi-Code MC-CDMA System in Frequency-Selective Fading Channel

被引：0

作者：

Seo, Hyoduck ^{[1
]}

Lee, Kyujin ^{[2
]}

机构：

[1] Kyung Hee Univ, 1732 Deogyeong Daero, Yongin 17104, Gyeonggi Do, South Korea

[2] Semyung Univ, 579 Sinwoul Dong, Jecheon City 390711, Chungbuk, South Korea

来源：

ADVANCED SCIENCE LETTERS | 2017年 / 23卷 / 03期

关键词：

Doppler Frequency; Multi-Block/Multi-Code MC-CDMA; RMS Delay;

D O I：

10.1166/asl.2017.8642

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Various data rates in mobile communication are required for various multimedia services. The Multi-Code Multi-Carrier Code Division Multiple Access (MC MC-CDMA) system is one solution to support these various data rates and improve BER performance. However, frequency-selective multipath fading channels destroy the orthogonality of spreading code, which causes inter-carrier interference (ICI). This type of interference has been shown to cause severe degradation in BER performance of MC MC-CDMA systems. In this paper, we proposed the Multi-Block MC MC-CDMA (MBMC MC-CDMA) system to improve BER performance by reducing the ICI in frequency-selective fading channels. The proposed system changes the spreading factor and number of blocks, but the data rates do not change. The BER performance is evaluated through computer simulation according to channel parameters. The simulation results show that the MBMC MC-CDMA system produces a much better performance than conventional MC MC-CDMA systems.

引用

页码：1709 / 1713

页数：5

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