NDLI: Complexity reduction of matrix manipulation for multi-user STBC-MIMO decoding

Content Provider	IEEE Xplore Digital Library
Author	Eilert, J. Di Wu Liu, D. Dandan Wang Al-Dhahir, N. Hlaing Minn
Copyright Year	2007
Description	Author affiliation: Dept. of Electr. Eng. Linkoping, Linkoping Univ., Linkoping (Eilert, J.; Di Wu; Liu, D.)
Abstract	This paper studies efficient complex valued matrix manipulations for multi-user STBC-MIMO decoding. A novel method called Alamouti blockwise analytical matrix inversion (ABAMI) is proposed for the inversion of large complex matrices that are based on Alamouti sub-blocks. Another method using a variant of Givens rotation is proposed for fast QR decomposition of this kind of matrices. Our solutions significantly reduce the number of operations which makes them more than 4 times faster than several other solutions in the literature. Furthermore, compared to fixed function VLSI implementations, our solution is more flexible and consumes less silicon area because the hardware is programmable and it can be reused for many other operations such as filtering, correlation and FFT/IFFT. Besides the analysis of the general computational complexity based on the number of basic operations, the computational latency is also measured in clock cycles based on the conceptual hardware for real-time matrix manipulations.
Starting Page	1
Ending Page	5
File Size	150721
Page Count	5
File Format	PDF
ISBN	9781424424832
DOI	10.1109/SARNOF.2007.4567354
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-04-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Decoding Matrix decomposition MIMO Hardware Delay Space technology Transmitting antennas Antenna arrays Very large scale integration Silicon
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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