NDLI: Bandwidth Efficient and Rate-Matched Low-Density Parity-Check Coded Modulation

Content Provider	IEEE Xplore Digital Library
Author	Bocherer, G. Steiner, F. Schulte, P.
Copyright Year	1972
Abstract	A new coded modulation scheme is proposed. At the transmitter, the concatenation of a distribution matcher and a systematic binary encoder performs probabilistic signal shaping and channel coding. At the receiver, the output of a bitwise demapper is fed to a binary decoder. No iterative demapping is performed. Rate adaption is achieved by adjusting the input distribution and the transmission power. The scheme is applied to bipolar amplitudeshift keying (ASK) constellations with equidistant signal points and it is directly applicable to two-dimensional quadrature amplitude modulation (QAM). The scheme is implemented by using the DVB-S2 low-density parity-check (LDPC) codes. At a frame error rate of 10^-3, the new scheme operates within less than 1.1 dB of the AWGN capacity 1/2 log₂(1 + SNR) at any spectral efficiency between 1 and 5 bits/s/Hz by using only 5 modes, i.e., 4-ASK with code rate 2/3, 8-ASK with 3/4, 16-ASK and 32-ASK with 5/6, and 64-ASK with 9/10.
Starting Page	4651
Ending Page	4665
Page Count	15
File Size	1472220
File Format	PDF
ISSN	00906778
Volume Number	63
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal to noise ratio Amplitude shift keying Encoding Probabilistic logic Iterative decoding Forward error correction Rate adaptation Probabilistic shaping Bandlimited communication Modulation Amplitude-shift keying Quadrature amplitude modulation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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