NDLI: An efficient iterative frequency domain equalization for relay-assisted ARQ single carrier transmissions

Content Provider	IEEE Xplore Digital Library
Author	Haitao Zhang Xin Zhang Dacheng Yang
Copyright Year	2013
Description	Author affiliation: Wireless Theor. & Technol. Lab. (WT&T Lab.), Beijing Univ. of Posts & Telecommun., Beijing, China (Haitao Zhang; Xin Zhang; Dacheng Yang)
Abstract	This paper proposed an efficient iterative frequency domain equalization (FDE) for cooperative multi-relay-assisted automatic repeat request (ARQ) single carrier systems operating over multiple-input-multiple-output (MIMO) channel. The receiver employs each retransmission as an additional set of virtual receive antennas to exploit the space diversity. At each iteration, soft inter-symbol interference (ISI) cancellation and inter-antenna interference (IAI) cancellation followed by minimum-mean-square-error (MMSE) based frequency domain filtering are carried out. The estimated symbols are demapped into bit extrinsic log likelihood ratio (LLR) using an equivalent Gaussian channel assumption as the input of the soft-in-soft-out (SISO) decoder. Both implementation for decode-and-forward (DF) and amplify-and-forward (AF) are investigated. Simulation results demonstrate the effectiveness of the proposed algorithm compared to conventional LLR-based combining scheme.
Starting Page	3980
Ending Page	3985
File Size	358763
Page Count	6
File Format	PDF
ISBN	9781467359382
ISSN	15253511
e-ISBN	9781467359399
e-ISBN	9781467359375
DOI	10.1109/WCNC.2013.6555213
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-04-07
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Frequency-domain analysis Automatic repeat request Decoding Receiving antennas Covariance matrices MIMO multi-relay-assisted ARQ FDE iterative detection
Content Type	Text
Resource Type	Article

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