NDLI: A VLSI decoder for a new type of constellations adapted to the Rayleigh Fading Channel

Content Provider	Springer Nature Link
Author	Boutillon, Emmanuel Uruñuela Martinez, Jose Maria
Copyright Year	1998
Abstract	Diversity is the key solution to obtain efficient channel coding in wireless communications, where the signal is subject to fading (Rayleigh Fading Channel). For high spectral efficiency, the best solutions used nowadays are based on QAM constellations of 1-order diversity, associated with a binary code or a trellis coded modulation to increase the overall diversity. It has been shown that a new class of d-dimensional non-QAM constellations, named π-constellations, can bring a d-order diversity without the addition of redundancy. Combined with classical coding techniques, π-constellations are very efficient. However, the decoding algorithm is far more complicated for π-constellations than for QAM-constellations. A sub-optimal algorithm that allows the decoding of π-constellations is proposed. An example of an application for a 4 bits/Hz/s spectral efficiency with a 4-D π-constellation is given. The VLSI architecture of the decoder is described. The implementation leads to 72 K gates, a binary rate of 32 Mbits/s and a BER of 10$^{-3}$ for a SNR of 14 dB.
Starting Page	17
Ending Page	26
Page Count	10
File Format	PDF
ISSN	10220038
Journal	Wireless Networks
Volume Number	4
Issue Number	1
e-ISSN	15728196
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1998-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Computer Communication Networks Electronic and Computer Engineering Business Information Systems
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Information Systems Electrical and Electronic Engineering

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