Journal ArticleDOI
Coded modulation based on rings of integers modulo-q. 1. Block codes
F.R. Baldini,P.G. Farrell +1 more
- Vol. 141, Iss: 3, pp 129-136
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TLDR
The authors aim to present an alternative multilevel (nonbinary) coding method, based on a ring of integers modulo-q (q is a nonprime integer number) which is suitable for coded modulation schemes.Abstract:
The authors aim to present an alternative multilevel (nonbinary) coding method, based on a ring of integers modulo-q (q is a nonprime integer number) which is suitable for coded modulation schemes. Some new concepts and definitions are introduced in order to build up a theoretical framework which allows a search for good multilevel codes. Such classes of block codes are also presented together with their interesting properties. Such codes can be used not only in q-PSK modulations, but also in q-QAM modulations by making a simple adaptation.read more
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Journal ArticleDOI
Soft Decoding of Integer Codes and Their Application to Coded Modulation
TL;DR: Comparison of symbol error probability (SEP) versus signal-to-noise ratio (SNR) between soft and hard decoding using integer coded modulation shows that at least 2dB coding gain can be obtained.
Journal ArticleDOI
Ring-TCM for M-PSK modulation: AWGN channels and DSP implementation
TL;DR: The authors' objective is to present a code design strategy and implementation of a coded modulation technique based on rings of integers modulo-M based on AWGN-optimised nonrotational invariant and transparent ring-TCM codes suitable for M-PSK modulation.
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Array codes over rings and their trellis decoding
TL;DR: It is shown that array codes over Z4 and Z8 provide a twofold and threefold increase, respectively, in spectral efficiency as well as a higher coding gain over uncoded transmission and a much larger codebook than that obtained with the same array code over GF(2) for similar code parameters.
Proceedings ArticleDOI
Double error correctable integer code and its application to QAM
TL;DR: Comparison of bit error rate versus signal-to-noise ratio (SNR) between soft and hard decoding using integer coded modulation (ICM) shows us that the authors can obtain approximately 2 dB coding gain.
Journal ArticleDOI
Turbo codes with symmetric and asymmetric component codes defined over finite fields of integers
TL;DR: This paper investigates turbo codes based on two component recursive systematic convolutional codes defined over a finite field of integers and shows good performance improvements when compared to binary and quaternary turbo codes with same throughput.