Development of a Trellis-Coded 8PSK Modem and Its Transmission Performance

Yuichi IWADATE; Tetsuomi IKEDA

Development of a Trellis-Coded 8PSK Modem and Its Transmission Performance

Yuichi IWADATE, Tetsuomi IKEDA

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A Trellis-Coded 8PSK (TCM) modem has been developed. This modem can transmit HDTV programs at a bit rate of 60Mbps over a satellite channel. In addition to Trellis coding, the (255, 235) Reed-Solomon code is adopted together with an interleaving technique to improve bit error performance. As a result, it has been confirmed that bit error rate of 10^-10 is achievable at a carrier to noise ratio of around 8.5dB over a 30MHz Gaussian noise channel. This TCM modem is also designed to double as a DQPSK modem. We examined the performances of these two modulation methods in a nonlinear channel. It was found that TCM is less disturbed than DQPSK by nonlinear distortion due to TWT. In addition, a limiter amplifier cascaded to TWT improves DQPSK performance and disturbs TCM performance. However it was confirmed that TCM still has a coding gain of 3dB over DQPSK.

Publication: IEICE TRANSACTIONS on Communications Vol.E77-B No.12 pp.1468-1473

Publication Date: 1994/12/25

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Type of Manuscript: Special Section PAPER (Special Issue on Digital Broadcasting Technology)

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Yuichi IWADATE, Tetsuomi IKEDA, "Development of a Trellis-Coded 8PSK Modem and Its Transmission Performance" in IEICE TRANSACTIONS on Communications, vol. E77-B, no. 12, pp. 1468-1473, December 1994, doi: .
Abstract: A Trellis-Coded 8PSK (TCM) modem has been developed. This modem can transmit HDTV programs at a bit rate of 60Mbps over a satellite channel. In addition to Trellis coding, the (255, 235) Reed-Solomon code is adopted together with an interleaving technique to improve bit error performance. As a result, it has been confirmed that bit error rate of 10^-10 is achievable at a carrier to noise ratio of around 8.5dB over a 30MHz Gaussian noise channel. This TCM modem is also designed to double as a DQPSK modem. We examined the performances of these two modulation methods in a nonlinear channel. It was found that TCM is less disturbed than DQPSK by nonlinear distortion due to TWT. In addition, a limiter amplifier cascaded to TWT improves DQPSK performance and disturbs TCM performance. However it was confirmed that TCM still has a coding gain of 3dB over DQPSK.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e77-b_12_1468/_p

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@ARTICLE{e77-b_12_1468,
author={Yuichi IWADATE, Tetsuomi IKEDA, },
journal={IEICE TRANSACTIONS on Communications},
title={Development of a Trellis-Coded 8PSK Modem and Its Transmission Performance},
year={1994},
volume={E77-B},
number={12},
pages={1468-1473},
abstract={A Trellis-Coded 8PSK (TCM) modem has been developed. This modem can transmit HDTV programs at a bit rate of 60Mbps over a satellite channel. In addition to Trellis coding, the (255, 235) Reed-Solomon code is adopted together with an interleaving technique to improve bit error performance. As a result, it has been confirmed that bit error rate of 10^-10 is achievable at a carrier to noise ratio of around 8.5dB over a 30MHz Gaussian noise channel. This TCM modem is also designed to double as a DQPSK modem. We examined the performances of these two modulation methods in a nonlinear channel. It was found that TCM is less disturbed than DQPSK by nonlinear distortion due to TWT. In addition, a limiter amplifier cascaded to TWT improves DQPSK performance and disturbs TCM performance. However it was confirmed that TCM still has a coding gain of 3dB over DQPSK.},
keywords={},
doi={},
ISSN={},
month={December},}

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TY - JOUR
TI - Development of a Trellis-Coded 8PSK Modem and Its Transmission Performance
T2 - IEICE TRANSACTIONS on Communications
SP - 1468
EP - 1473
AU - Yuichi IWADATE
AU - Tetsuomi IKEDA
PY - 1994
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E77-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 1994
AB - A Trellis-Coded 8PSK (TCM) modem has been developed. This modem can transmit HDTV programs at a bit rate of 60Mbps over a satellite channel. In addition to Trellis coding, the (255, 235) Reed-Solomon code is adopted together with an interleaving technique to improve bit error performance. As a result, it has been confirmed that bit error rate of 10^-10 is achievable at a carrier to noise ratio of around 8.5dB over a 30MHz Gaussian noise channel. This TCM modem is also designed to double as a DQPSK modem. We examined the performances of these two modulation methods in a nonlinear channel. It was found that TCM is less disturbed than DQPSK by nonlinear distortion due to TWT. In addition, a limiter amplifier cascaded to TWT improves DQPSK performance and disturbs TCM performance. However it was confirmed that TCM still has a coding gain of 3dB over DQPSK.
ER -