Multiple Access Performance of Parallel Combinatory Spread Spectrum Communication Systems in Nonfading and Rayleigh Fading Channels

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概要

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• This paper describes the multiple access performance of parallel combinatory spread spectrum (PC/SS) communication systems in nonfading and Rayleigh fading multipath channels. The PC/SS systems can provide the high-speed data transmission capability by transmitting multiple pseudo-noise sequences out of a pre-assigned sequence set. The performance is evaluated in terms of average bit error rate (BER) by numerical computation. In nonfading white gaussian channel, the PC/SS systems are superior to conventional direct sequence spread spectrum (DS/SS) systems under the identical spreading factor condition. In Rayleigh fading channel, the performance of the PC/SS system without diversity is poorer than that of the DS/SS system. By including the explicit and implicit diversity, the performance of the PC/SS system becomes better than that of conventional DS/SS systems. A longer spreading sequence is assignable to a PC/SS system having the spreading factor equal to that in the conventional DS/SS system. Hence, the error control coding is easily. It is found that the PC/SS systems including diversity and Reed-Solomon coding improves the multiple access performance.

• 社団法人電子情報通信学会の論文
• 1995-08-25

著者

• KIKUCHI Hisakazu

  Faculty of Engineering, Niigata University

• Kikuchi H

  Niigata Univ. Niigata Jpn

• Kikuchi Hisakazu

  Faculty Of Engineering Niigata University

• Kikuchi Hisakazu

  The Faculty Of Engineering Niigata University

• Kikuchi Hisakazu

  The Author Is With The Faculty Of Engineering Niigata University

• MARUBAYASHI Gen

  Department of Information Systems Science, Soka University

• SASAKI Shigenobu

  Faculty of Engineering, Niigata University

• ZHU Jinkang

  University of Science and Technology of China

• MARUBAYASHI Gen

  Faculty of Engineering, Soka University

• Marubayashi Gen

  Department Of Information Systems Science Soka University

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