Theoretical Evaluation of Soft Decision Gain for Block FEC in a Land Mobile Radio Channel

Yoshiya MIYAGAKI

Theoretical Evaluation of Soft Decision Gain for Block FEC in a Land Mobile Radio Channel

Yoshiya MIYAGAKI

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The soft decision gain for the block FEC code transmitted with an arbitrary degree of bit-interleaving through a land mobile radio channel is theoretically evaluated. As a soft decision decoding scheme the Chase decoding is assumed and as a land mobile radio channel the multiplicative time-variant Rayleigh fading channel is assumed. The bit error rates (BER) are formulated both for the hard decision decoding and for the soft decision decoding in two modem cases of noncoherent BFSK and coherent BPSK, respectively. It is clarified from some numerical examples that (i) the soft decision gains of 45 dB at BER10^-4 and 67 dB at BER10^-6 are obtainable equally in both modem systems, (ii) the bit-interleaving considerably increases a soft decision gain, and (iii) the multiple error correction code gets more soft decision gain by about 1 dB than the single error correction code.

Publication: IEICE TRANSACTIONS on transactions Vol.E70-E No.11 pp.1125-1132

Publication Date: 1987/11/25

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Type of Manuscript: PAPER

Category: Radio Communication

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Yoshiya MIYAGAKI

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Yoshiya MIYAGAKI, "Theoretical Evaluation of Soft Decision Gain for Block FEC in a Land Mobile Radio Channel" in IEICE TRANSACTIONS on transactions, vol. E70-E, no. 11, pp. 1125-1132, November 1987, doi: .
Abstract: The soft decision gain for the block FEC code transmitted with an arbitrary degree of bit-interleaving through a land mobile radio channel is theoretically evaluated. As a soft decision decoding scheme the Chase decoding is assumed and as a land mobile radio channel the multiplicative time-variant Rayleigh fading channel is assumed. The bit error rates (BER) are formulated both for the hard decision decoding and for the soft decision decoding in two modem cases of noncoherent BFSK and coherent BPSK, respectively. It is clarified from some numerical examples that (i) the soft decision gains of 45 dB at BER10^-4 and 67 dB at BER10^-6 are obtainable equally in both modem systems, (ii) the bit-interleaving considerably increases a soft decision gain, and (iii) the multiple error correction code gets more soft decision gain by about 1 dB than the single error correction code.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e70-e_11_1125/_p

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@ARTICLE{e70-e_11_1125,
author={Yoshiya MIYAGAKI, },
journal={IEICE TRANSACTIONS on transactions},
title={Theoretical Evaluation of Soft Decision Gain for Block FEC in a Land Mobile Radio Channel},
year={1987},
volume={E70-E},
number={11},
pages={1125-1132},
abstract={The soft decision gain for the block FEC code transmitted with an arbitrary degree of bit-interleaving through a land mobile radio channel is theoretically evaluated. As a soft decision decoding scheme the Chase decoding is assumed and as a land mobile radio channel the multiplicative time-variant Rayleigh fading channel is assumed. The bit error rates (BER) are formulated both for the hard decision decoding and for the soft decision decoding in two modem cases of noncoherent BFSK and coherent BPSK, respectively. It is clarified from some numerical examples that (i) the soft decision gains of 45 dB at BER10^-4 and 67 dB at BER10^-6 are obtainable equally in both modem systems, (ii) the bit-interleaving considerably increases a soft decision gain, and (iii) the multiple error correction code gets more soft decision gain by about 1 dB than the single error correction code.},
keywords={},
doi={},
ISSN={},
month={November},}

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TY - JOUR
TI - Theoretical Evaluation of Soft Decision Gain for Block FEC in a Land Mobile Radio Channel
T2 - IEICE TRANSACTIONS on transactions
SP - 1125
EP - 1132
AU - Yoshiya MIYAGAKI
PY - 1987
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E70-E
IS - 11
JA - IEICE TRANSACTIONS on transactions
Y1 - November 1987
AB - The soft decision gain for the block FEC code transmitted with an arbitrary degree of bit-interleaving through a land mobile radio channel is theoretically evaluated. As a soft decision decoding scheme the Chase decoding is assumed and as a land mobile radio channel the multiplicative time-variant Rayleigh fading channel is assumed. The bit error rates (BER) are formulated both for the hard decision decoding and for the soft decision decoding in two modem cases of noncoherent BFSK and coherent BPSK, respectively. It is clarified from some numerical examples that (i) the soft decision gains of 45 dB at BER10^-4 and 67 dB at BER10^-6 are obtainable equally in both modem systems, (ii) the bit-interleaving considerably increases a soft decision gain, and (iii) the multiple error correction code gets more soft decision gain by about 1 dB than the single error correction code.
ER -