NDLI: Transmitter and receiver designs for the MIMO fading broadcast channel

Content Provider	IEEE Xplore Digital Library
Author	Doostnejad, R. Teng Joon Lim Sousa, E.
Copyright Year	2004
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada (Doostnejad, R.; Teng Joon Lim; Sousa, E.)
Abstract	We study the downlink of a MIMO multi-user system when no information about the channel is assumed at the transmitter. Instead of applying direct-sequence code-division multiple access (DS-CDMA) over the codewords of conventional space-time coding (STC) schemes, a modulation technique that can be seen as two-dimensional space-time spreading (2D-STSC) is described. It is based on well-known Walsh codes, provides full transmit diversity and high spectral efficiency, and produces groups of users that are orthogonal to each other. This last point translates into simplified detection strategies without loss of performance. The main detector structure of interest is a two-stage interference canceller which employs serial interference cancellation (SIC) in the first stage. We will demonstrate that in conjunction with an unequal power allocation scheme, this receiver is able to provide full diversity and suffers from only a small performance loss compared to the full-complexity maximum likelihood receiver. The proposed scheme compares favorably with related ones in terms of spectral efficiency, bit error probability, and complexity at the receiver.
Starting Page	1149
Ending Page	1153
File Size	379632
Page Count	5
File Format	PDF
ISBN	0780385233
DOI	10.1109/PIMRC.2004.1373878
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-09-05
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transmitters MIMO Fading Broadcasting Performance loss Interference cancellation Downlink Direct-sequence code-division multiple access Multiaccess communication Modulation coding
Content Type	Text
Resource Type	Article

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