Superposed transmission of high speed QPSK signals and SSMA-QPSK signals in non-linear channels

Masahiro Morikura, Takatoshi Sugiyama, Hiroshi Kazama, Shuji Kubota, Shuzo Kato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper proposes a superposed SSMA(Spread Spectrum Multiple Access)-QPSK(Quadrature Phase Shift Keying) signal transmission over a high speed QPSK modulated signal to achieve higher transmission efficiency per transponder and to facilitate a lower power transmitter for SSMA signal transmission. The employment of highcoding-gain FEC (Forward Error Correction) and co-channe! interference cancellation for SSMA-QPSK signals makes it possible to transmit SSMA-QPSK signals over a nonlinearly amplified high speed QPSK signal transmission channel. Experimental results show that the proposed scheme is able to transmit twenty SSMA-QPSK channels and high speed QPSK signals over the same transponder simultaneously and realize a frequency utilization efficiency of 1.530bit/s/Hz (superposed transmission of 60Mbit/s QPSK signals and twenty 32kbit/s SSMA-QPSK signals over a 36MHz transponder) when SSMA-QPSK signal power to QPSK signal power ratio equals -30 dB.

Original languageEnglish
Title of host publicationGLOBECOM 1992 - Communication for Global Users
Subtitle of host publicationIEEE Global Telecommunications Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages727-731
Number of pages5
ISBN (Electronic)0780306082, 9780780306080
DOIs
Publication statusPublished - 1992 Jan 1
Externally publishedYes
Event1992 IEEE Global Telecommunications Conference: Communication for Global Users, GLOBECOM 1992 - Orlando, United States
Duration: 1992 Dec 61992 Dec 9

Publication series

NameGLOBECOM 1992 - Communication for Global Users: IEEE Global Telecommunications Conference

Conference

Conference1992 IEEE Global Telecommunications Conference: Communication for Global Users, GLOBECOM 1992
CountryUnited States
CityOrlando
Period92/12/692/12/9

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Information Systems
  • Information Systems and Management
  • Safety, Risk, Reliability and Quality

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