NDLI: A new architecture for minimum mean square error sorted QR decomposition for MIMO wireless communication systems

Content Provider	IEEE Xplore Digital Library
Author	Tomashevich, V. Gimmler-Dumont, C. Fesl, C. Wehn, N. Polian, I.
Copyright Year	2014
Description	Author affiliation: Fachbereich Elektrotechnik und Informationstechnik, Tech. Univ. Kaiserslautern, Kaiserslautern, Germany (Gimmler-Dumont, C.; Wehn, N.) \|\| Fac. of Math. & Comput. Sci., Univ. of Passau, Passau, Germany (Tomashevich, V.; Fesl, C.; Polian, I.)
Abstract	Multiantenna telecommunication systems represent channels with multiple inputs and multiple outputs (MIMO) by matrices. QR decomposition (QRD) of the channel matrix is a crucial part of MIMO detection algorithms, such as successive interference cancellation or sphere detection. Modern standards like Long Term Evolution (LTE) require the processing of millions of matrices per second, in order to compensate channel changes that occur due to the mobility of the detector and Doppler spread. We introduce a new architecture for minimum mean square error (MMSE) sorted QR decomposition based on Givens rotations. The architecture is derived from classical systolic array approach but includes modifications to allow sorting and MMSE preprocessing. It balances throughput against area and fulfills the real-time requirements of 1.763 μs and 0.881 μs derived from the LTE MIMO standard when synthesized on ALTERA Stratix III and Stratix V family FPGAs. Moreover, it can trade speed for area and is suitable for tighter time constraints.
Sponsorship	IEEE Comput. Soc.
Starting Page	246
Ending Page	249
File Size	268864
Page Count	4
File Format	PDF
ISBN	9781479945603
e-ISBN	9781479945580
DOI	10.1109/DDECS.2014.6868800
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-04-23
Publisher Place	Poland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	MIMO Arrays Matrix decomposition Standards Sorting Registers
Content Type	Text
Resource Type	Article

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