NDLI: Coded performance of spread space-spectrum multiple access for the MIMO forward link transmission

Content Provider	IEEE Xplore Digital Library
Author	Ng, B.K. Sousa, E.S.
Copyright Year	2003
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada (Ng, B.K.; Sousa, E.S.)
Abstract	In this paper, the coded performance of a previously proposed space-time multiuser multiplexing scheme called the spread space-spectrum multiple access (SSSMA) (Ng, BK et al.) is investigated for the forward link MIMO system. The key feature of SSSMA is that the number of user-channels is increased by exploiting additional degrees of freedom offered by multiple antennas. The large MIMO data pipe is divided and allocated to multiple coded user-channels over the entire transmission time interval and bandwidth. Thus, unlike the orthogonal multiple access scheme, the spatial multiple access interference (MAI) exists in SSSMA and is mitigated through the use of the space-time diagonal (STD) spreading sequences. When coding is introduced, each user may employ a user-specific optimal inter-leaver. It is theoretically shown that for two transmit antennas and optimal interleaving, the full diversity criterion is satisfied for all multiuser codeword pairs, thereby suggesting that spreading is an effective means to achieve spatial diversity at high bandwidth-efficiency. With suboptimal detector such as interference-cancelling receiver based on turbo processing, it is shown that the SSSMA offers near-capacity performance that is superior to many well-known MIMO transmission schemes.
Starting Page	1221
Ending Page	1225
File Size	258882
Page Count	5
File Format	PDF
ISBN	0780379748
DOI	10.1109/GLOCOM.2003.1258433
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-12-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	MIMO Multiple access interference Transmitting antennas Interleaved codes Transmitters Multiplexing Bandwidth Antenna theory Detectors Receiving antennas
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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