A Frequency Utilization Ffficiency Improvement on Superposed SSMA-QPSK Signal Transmission over High Speed QPSK Signals in Nonlinear Channels

Takatoshi SUGIYAMA; Hiroshi KAZAMA; Masahiro MORIKURA; Shuji KUBOTA; Shuzo KATO

A Frequency Utilization Ffficiency Improvement on Superposed SSMA-QPSK Signal Transmission over High Speed QPSK Signals in Nonlinear Channels

Takatoshi SUGIYAMA, Hiroshi KAZAMA, Masahiro MORIKURA, Shuji KUBOTA, Shuzo KATO

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This paper proposes a superposed SSMA (Spread Spectrum Multiple Access)-QPSK (Quadrature Phase Shift Keying) signal transmission scheme over high speed QPSK signals to achieve higher frequency utilization efficiency and to facilitate lower power transmitters for SSMA-QPSK signal transmission. Experimental results show that the proposed scheme which employs the coding-rate of one-half FEC (Forward Error Correction) and a newly proposed co-channel interference cancellation scheme for SSMA-QPSK signals can transmit twenty SSMA-QPSK channels simultaneously over a nonlinearly amplified high speed QPSK signal transmission channel and achieve as ten times SSMA channels transmission as that without co-channel interference cancellation when the SSMA-QPSK signal power to the high speed QPSK signal power ratio equals -30dB. Moreover, cancellation feasibility generation of the interference signals replica through practical hardware implementation is clarified.

Publication: IEICE TRANSACTIONS on Communications Vol.E76-B No.5 pp.480-487

Publication Date: 1993/05/25

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Type of Manuscript: Special Section PAPER (Special Issue on Satellite Communications Networking and Applications)

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Takatoshi SUGIYAMA, Hiroshi KAZAMA, Masahiro MORIKURA, Shuji KUBOTA, Shuzo KATO, "A Frequency Utilization Ffficiency Improvement on Superposed SSMA-QPSK Signal Transmission over High Speed QPSK Signals in Nonlinear Channels" in IEICE TRANSACTIONS on Communications, vol. E76-B, no. 5, pp. 480-487, May 1993, doi: .
Abstract: This paper proposes a superposed SSMA (Spread Spectrum Multiple Access)-QPSK (Quadrature Phase Shift Keying) signal transmission scheme over high speed QPSK signals to achieve higher frequency utilization efficiency and to facilitate lower power transmitters for SSMA-QPSK signal transmission. Experimental results show that the proposed scheme which employs the coding-rate of one-half FEC (Forward Error Correction) and a newly proposed co-channel interference cancellation scheme for SSMA-QPSK signals can transmit twenty SSMA-QPSK channels simultaneously over a nonlinearly amplified high speed QPSK signal transmission channel and achieve as ten times SSMA channels transmission as that without co-channel interference cancellation when the SSMA-QPSK signal power to the high speed QPSK signal power ratio equals -30dB. Moreover, cancellation feasibility generation of the interference signals replica through practical hardware implementation is clarified.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/e76-b_5_480/_p

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@ARTICLE{e76-b_5_480,
author={Takatoshi SUGIYAMA, Hiroshi KAZAMA, Masahiro MORIKURA, Shuji KUBOTA, Shuzo KATO, },
journal={IEICE TRANSACTIONS on Communications},
title={A Frequency Utilization Ffficiency Improvement on Superposed SSMA-QPSK Signal Transmission over High Speed QPSK Signals in Nonlinear Channels},
year={1993},
volume={E76-B},
number={5},
pages={480-487},
abstract={This paper proposes a superposed SSMA (Spread Spectrum Multiple Access)-QPSK (Quadrature Phase Shift Keying) signal transmission scheme over high speed QPSK signals to achieve higher frequency utilization efficiency and to facilitate lower power transmitters for SSMA-QPSK signal transmission. Experimental results show that the proposed scheme which employs the coding-rate of one-half FEC (Forward Error Correction) and a newly proposed co-channel interference cancellation scheme for SSMA-QPSK signals can transmit twenty SSMA-QPSK channels simultaneously over a nonlinearly amplified high speed QPSK signal transmission channel and achieve as ten times SSMA channels transmission as that without co-channel interference cancellation when the SSMA-QPSK signal power to the high speed QPSK signal power ratio equals -30dB. Moreover, cancellation feasibility generation of the interference signals replica through practical hardware implementation is clarified.},
keywords={},
doi={},
ISSN={},
month={May},}

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TY - JOUR
TI - A Frequency Utilization Ffficiency Improvement on Superposed SSMA-QPSK Signal Transmission over High Speed QPSK Signals in Nonlinear Channels
T2 - IEICE TRANSACTIONS on Communications
SP - 480
EP - 487
AU - Takatoshi SUGIYAMA
AU - Hiroshi KAZAMA
AU - Masahiro MORIKURA
AU - Shuji KUBOTA
AU - Shuzo KATO
PY - 1993
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E76-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 1993
AB - This paper proposes a superposed SSMA (Spread Spectrum Multiple Access)-QPSK (Quadrature Phase Shift Keying) signal transmission scheme over high speed QPSK signals to achieve higher frequency utilization efficiency and to facilitate lower power transmitters for SSMA-QPSK signal transmission. Experimental results show that the proposed scheme which employs the coding-rate of one-half FEC (Forward Error Correction) and a newly proposed co-channel interference cancellation scheme for SSMA-QPSK signals can transmit twenty SSMA-QPSK channels simultaneously over a nonlinearly amplified high speed QPSK signal transmission channel and achieve as ten times SSMA channels transmission as that without co-channel interference cancellation when the SSMA-QPSK signal power to the high speed QPSK signal power ratio equals -30dB. Moreover, cancellation feasibility generation of the interference signals replica through practical hardware implementation is clarified.
ER -