NDLI: Performance analysis of multicarrier CDMA systems with frequency offsets and random spreading under optimum combining

Content Provider	IEEE Xplore Digital Library
Author	Feng-Tsun Chien Chien-Hwa Hwang Kuo, C.-C.J.
Copyright Year	1972
Abstract	The carrier-frequency offset effect on the performance of asynchronous multicarrier direct-sequence code-division multiple-access (MC-DS-CDMA) systems with aperiodic random spreading and correlated Rayleigh fading is studied in this paper. We obtain the optimum combining filter that maximizes the signal-to-interference-plus-noise ratio (SINR) of the combined statistics and exploits correlated information among subchannels. A closed-form expression for the unconditional covariance matrix of the interference-plus-noise vector, which forms the basis of our theoretical analysis of the maximum SINR and the average bit error probability formula, is derived by averaging several random parameters including asynchronous delays, correlated Rayleigh fading, and signature sequences. The analytic results obtained are applicable to MC-CDMA with appropriate modifications. Furthermore, we show that the MC-CDMA system with a common random signature sequence over all subcarriers for a given user outperforms that with distinct sequences over different subcarriers. Finally, the performance of MC-CDMA systems using the optimum combining technique is compared with that of different combining filters in the simulation.
Starting Page	737
Ending Page	747
Page Count	11
File Size	539149
File Format	PDF
ISSN	00906778
Volume Number	54
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Performance analysis Multiaccess communication Frequency Multicarrier code division multiple access Rayleigh channels Signal to noise ratio Information filtering Information filters Statistics Closed-form solution random signature sequence Asynchronous transmission carrier-frequency offset (CFO) code-division multiple access (CDMA) multicarrier CDMA (MC-CDMA)
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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