Noise Reduction with Sub-Channel Sorting for OFDM-CDM

被引：0
作者：
Chen Zhe [1 ]
Liu Fang [1 ]
Yang Da-cheng [1 ]
Feng Hai-liang [2 ]
机构：
[1] Beijing Univ Posts & Telecommun, Wireless Commun Res Ctr, Beijing, Peoples R China
[2] Acad Broadcasting Sci, Beijing, Peoples R China
来源：
2008 4TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING, VOLS 1-31 | 2008年
关键词：
OFDM-CDM; Noise Reduction; LS; CFR Sorting;
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this paper, we consider an Orthogonal Frequency Division Multiplexing-Code Division Multiplexing (OFDM-CDM) system. The noise reduction method based on Least Squares (LS) is introduced into the OFDM-CDM receiver to improve the signal-to-noise ratio (SNR), while the system does not work under full load. In this paper, Walsh code is considered to be used in CDM module. The relationship between the spreading codes and the variance of the noise after noise reduction is investigated. Based on this relationship, a simple noise reduction after channel frequency response (CFR) sorting is proposed to improve the Bit Error Rate (BER) performance of system further. Simulation results suggest that good performance can be achieved with proposed scheme.
引用
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页码：871 / +
页数：2
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