NDLI: Low-complexity iterative detection and decoding in finite geometry LDPC-coded MIMO systems

Content Provider	IEEE Xplore Digital Library
Author	Balasuriya, N. Yahampath, P. Ngatched, T. Alfa, A.S.
Copyright Year	2009
Description	Author affiliation: Department of Electrical and Computer Engineering, University of Manitoba, Winnipeg, Manitoba R3T 5V6 (Balasuriya, N.; Yahampath, P.; Ngatched, T.; Alfa, A.S.)
Abstract	This paper presents a low-complexity iterative joint detection and decoding algorithm for finite geometry-low density parity check (FG-LDPC) coded multiple-input multiple-output (MIMO) systems, in which the MIMO channel detector and the FG-LDPC decoder iteratively exchange soft information. The key to the simplicity of the algorithm is the use of a bit flipping-based decoder for FG-LDPC code. An important issue addressed here is the generation of soft information from the binary outputs of the bit-flipping decoder to be fed back to the MIMO detector. Simulation results show that the proposed joint detection and decoding algorithm achieves a substantial reduction in decoding error probability compared to a cascaded detector and a decoder. We also compare the performance with belief-propagation (BP) based detector-decoders which are significantly more complex. The new algorithm provides a practical approach to joint detection and decoding of popular FG-LDPC codes in a MIMO system, a task which is computationally unmanageable with a BP algorithm.
Starting Page	1752
Ending Page	1756
File Size	380801
Page Count	5
File Format	PDF
ISBN	9781424451227
e-ISBN	9781424451234
DOI	10.1109/PIMRC.2009.5449868
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-13
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Iterative decoding Geometry MIMO Parity check codes Iterative algorithms Detectors Bit error rate Forward error correction AWGN Iterative methods
Content Type	Text
Resource Type	Article

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