Combined Transmission System of TCM, Bit-Interleaving and Decision Feedback Equalization for Fading Channel
Summary :
Bit-interleaving can enhance performance of a trellis coded modulation system over a fading channel. A combined system with decision feedback equalization is proposed. In the system, TCM decoded symbols are fed back for equalization. To avoid a bad effect of decoding delay, a deinterleaver is utilized effectively. Information sequence is divided into three subsequences and encoded by three encoders. Among the 3 code vectors from the encoders, bits are interleaved and decoding proceeds in parallel. Simulation results show that the proposed system realizes 0.6 dB more coding gain than a symbol interleaved system. A calculation method of a branch metric for decoding is proposed. Performance with the branch metric is shown to be nearly independent from the desired/undesired power ratio of a intersymbol interference channel. An approximate upper bound is analyzed for the proposed system, and the optimum code is searched.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E80-A No.11 pp.2155-2161
- Publication Date
- 1997/11/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Special Section PAPER (Special Section on Information Theory and Its Applications)
- Category
- Communications/Coded Modulation/Spread Spectrum
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Haruo OGIWARA, Michito WASHIZU, "Combined Transmission System of TCM, Bit-Interleaving and Decision Feedback Equalization for Fading Channel" in IEICE TRANSACTIONS on Fundamentals,
vol. E80-A, no. 11, pp. 2155-2161, November 1997, doi: .
Abstract: Bit-interleaving can enhance performance of a trellis coded modulation system over a fading channel. A combined system with decision feedback equalization is proposed. In the system, TCM decoded symbols are fed back for equalization. To avoid a bad effect of decoding delay, a deinterleaver is utilized effectively. Information sequence is divided into three subsequences and encoded by three encoders. Among the 3 code vectors from the encoders, bits are interleaved and decoding proceeds in parallel. Simulation results show that the proposed system realizes 0.6 dB more coding gain than a symbol interleaved system. A calculation method of a branch metric for decoding is proposed. Performance with the branch metric is shown to be nearly independent from the desired/undesired power ratio of a intersymbol interference channel. An approximate upper bound is analyzed for the proposed system, and the optimum code is searched.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e80-a_11_2155/_p
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@ARTICLE{e80-a_11_2155,
author={Haruo OGIWARA, Michito WASHIZU, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Combined Transmission System of TCM, Bit-Interleaving and Decision Feedback Equalization for Fading Channel},
year={1997},
volume={E80-A},
number={11},
pages={2155-2161},
abstract={Bit-interleaving can enhance performance of a trellis coded modulation system over a fading channel. A combined system with decision feedback equalization is proposed. In the system, TCM decoded symbols are fed back for equalization. To avoid a bad effect of decoding delay, a deinterleaver is utilized effectively. Information sequence is divided into three subsequences and encoded by three encoders. Among the 3 code vectors from the encoders, bits are interleaved and decoding proceeds in parallel. Simulation results show that the proposed system realizes 0.6 dB more coding gain than a symbol interleaved system. A calculation method of a branch metric for decoding is proposed. Performance with the branch metric is shown to be nearly independent from the desired/undesired power ratio of a intersymbol interference channel. An approximate upper bound is analyzed for the proposed system, and the optimum code is searched.},
keywords={},
doi={},
ISSN={},
month={November},}
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TY - JOUR
TI - Combined Transmission System of TCM, Bit-Interleaving and Decision Feedback Equalization for Fading Channel
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2155
EP - 2161
AU - Haruo OGIWARA
AU - Michito WASHIZU
PY - 1997
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E80-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 1997
AB - Bit-interleaving can enhance performance of a trellis coded modulation system over a fading channel. A combined system with decision feedback equalization is proposed. In the system, TCM decoded symbols are fed back for equalization. To avoid a bad effect of decoding delay, a deinterleaver is utilized effectively. Information sequence is divided into three subsequences and encoded by three encoders. Among the 3 code vectors from the encoders, bits are interleaved and decoding proceeds in parallel. Simulation results show that the proposed system realizes 0.6 dB more coding gain than a symbol interleaved system. A calculation method of a branch metric for decoding is proposed. Performance with the branch metric is shown to be nearly independent from the desired/undesired power ratio of a intersymbol interference channel. An approximate upper bound is analyzed for the proposed system, and the optimum code is searched.
ER -
English
