NDLI: Performance of multicarrier CDMA with dual spreading in Nakagami-m frequency offset fading channels

Content Provider	IEEE Xplore Digital Library
Author	Gemeay, E. Khedr, M. El-noubi, S. Nasr, M.
Copyright Year	2010
Description	Author affiliation: Dept. Communications Engineering, Tanta University, Egypt (Gemeay, E.; Nasr, M.) \|\| Dept. EE. Alexandria University, Egypt (El-noubi, S.) \|\| Dept. Electronics and Communication. Arab Academy for Science and Tech, Egypt (Khedr, M.)
Abstract	In general, Multicarrier systems are very sensitive to carrier frequency offset (CFO) which generates intercarrier interference (ICI) resulting in performance degradation. However, by using frequency diversity in multicarrier DS-CDMA system, the effect of ICI caused by CFO can be significantly reduced. This can be achieved in Time-Frequency (TF) domain spreading MC DS-CDMA system which employs both time and frequency (TF) domain spreading or hybrid spreading. In this paper, the performance of TF-domain spread MC-DS-CDMA system over Nakagami-m fading channels is evaluated and investigated with varying CFO, number of users, number of subcarriers, and Signal-To-Noise-Ratio (SNR). The probability of bit error rate (BER) of TF-domain spread MC-DS-CDMA is derived using the standard Gaussian Approximation (SGA) approach for different values of m parameter. Numerical evaluation of the analytical expression of BER reveals that a high capacity and BER performance improvement are achieved for TF-domain spread MC-DS-CDMA system over the performance of multicarrier CDMA (MC-CDMA) system which spreads the signal in the frequency domain only. The simulation results show excellent agreement with the analysis.
Starting Page	743
Ending Page	749
File Size	7516419
Page Count	7
File Format	PDF
ISBN	9781424454273
ISSN	17389445
e-ISBN	9781424454280
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-02-07
Publisher Place	Korea (South)
Access Restriction	Subscribed
Rights Holder	Electronics and Telecommunications Research Institute
Subject Keyword	Multiaccess communication Fading Bit error rate Interference Degradation Frequency diversity Time frequency analysis Signal to noise ratio Gaussian approximation Signal analysis Nakagami fading channel multicarrier CDMA carrier frequency offset frequency-domain spreading time-domain spreading
Content Type	Text
Resource Type	Article

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