NDLI: Performance Analysis of Orthogonal Transmit Diversity Over Intra-Cell Interference in WCDMA Downlinks

Content Provider	IEEE Xplore Digital Library
Author	An, J.F.
Copyright Year	2007
Description	Author affiliation: Dept. of Commun. & Guidance Eng., Nat. Taiwan Ocean Univ., Keelung (An, J.F.)
Abstract	This paper extends the traditional orthogonal transmit diversity (OTD) analyses to the multipath intra-cell interference presented in a realistic wideband code-division multiple access (WCDMA) downlink channel. A generic OTD system model is proposed for analyses permitting maximizing the spatial and temporal diversity dimensions for multiple transmit antennas and space-time block code (STBC) respectively. Analytical expressions are derived to evaluate the Chernoff upper bounds on the bit-error rate (BER) for the OTD system under a variety of channel parameters. The expression shows that the BER upper bound can be simplified and determined using an attained signal-to-interference-plus-noise power ratio (SINK) obtained in terms of the number of transmit antennas, the phase difference between two transmit antennas, the channel orthogonality, and the relative cross-correlations of the desired signal to the intra-cell interferers power ratio when equal power allocation at each intra-cell user and perfect channel state information (CSI) are applied in the closed-loop TD system.
Starting Page	1
Ending Page	6
File Size	280819
Page Count	6
File Format	PDF
ISBN	1424416620
DOI	10.1109/ISTMWC.2007.4299047
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-07-01
Publisher Place	Hungary
Access Restriction	Subscribed
Rights Holder	Scientific Assoc for Infocommunications
Subject Keyword	Space-time codes Transmitting antennas Bit error rate WCDMA Interference Downlink Channel orthogonality Multiaccess communication Upper bound Orthogonal transmit diversity Multipath fading Performance analysis Block codes Wideband Channel state information
Content Type	Text
Resource Type	Article

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