Performance Analysis of Orthogonal Multicarrier-CDMA on Two-Ray Multipath Fading Channels
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概要
- 論文の詳細を見る
Orthogonala Multi-Carrier-Code Division Multiple Access (OMC-CDMA) is a scheme that combines multicarrier modulation with Direct Sequence Spread Spectrum (DS-SS) and allows the efficient utilization of the bandwidth, the resistance against frequency selective fading in broadband mobile radio channels and the efficient implemuntation by the FFT algorithm. In this paper, we analyze the bit error probability (BER) of OMC-CDMA on two-ray Rayleigh multipath fading channels with the delay time and compare the BER performances of OMC-CDMA according to the number of users (M) and subcarriers (N), and the power of delayed path. We found that the performance of OMC-CDMA depends greatly on the power of delayed signal. If the power of delayed signal is increased from 10% to 50% as compared with the direct path power, the capactiy of OMC-CDMA is decreased approximately by 40% at BER=10^<-3>, N=256 and SNR=12dB. And, though more subcarriers are used in the circumstanece that the power of delayed signal is relatively great, the performance is not signigicantly improved.
- 社団法人電子情報通信学会の論文
- 2001-01-01
著者
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Kim K
Korea Res. Inst. Of Standards And Sci. Daejeon Kor
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MOON Sungdon
Digital Communication System Laboratory, K-JIST
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Moon Sungdon
Digital Communication System Laboratory K-jist
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Ko Gwangzeen
The Authors Are With Digital Communication System Laboratory K-jist
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Kim Kiseon
The Authors Are With Digital Communication System Laboratory K-jist
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MOON Sungdon
The authors are with Digital Communication System Laboratory, K-JIST
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