NDLI: Energy spreading transform for down-link MC-CDMA

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Energy spreading transform for down-link MC-CDMA

Content Provider	IEEE Xplore Digital Library
Author	Taewon Hwang Li, Y.G. Yi Yuan-Wu
Copyright Year	2002
Abstract	In this paper, we apply recently developed energy spreading transform (EST) technique to down-link MC-CDMA systems for frequency and spatial diversity. The performance of the proposed EST based MC-CDMA systems is independent of the number of active users, which is different from all current MC-CDMA systems. It is demonstrated by computer simulation that the BER for the EST based system is 1.1 times 110^-4 while it is 1.6 times 10^-3 for a MC-CDMA system without EST when the system is with full load and E_b/N_o = 12 dB. The EST based MC-CDMA system also facilitates transmit diversity and MIMO techniques when multiple transmit and receive antennas are available. In particular, we develop symbol shuffle and combined schemes for spatial diversity for a EST based MC-CDMA system with multiple transmit antennas at the base station. Compared with a MC-CDMA system without EST, the required E_b/N_o for 1% BER for the developed scheme is improved by about 4 dB.
File Size	147958
File Format	PDF
ISSN	15361276
Volume Number	7
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multicarrier code division multiple access Intersymbol interference OFDM Data communication Multiaccess communication Fading Telecommunications Bit error rate MIMO Multipath channels
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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