ISI and CCI Canceller with Preselecting Adaptive Array and Cascaded Equalizer in Digital Mobile Radio

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概要

• 論文の詳細を見る

• An adaptive array has been proposed as a canceller for both inter-symbol interference(ISI)and co-channel interference (CCI). However, it has no path-diversity gain since it selects just one signal correlated to the reference signal. In this paper, a novel interference canceller having sufficient path-diversity gain is proposed. The canceller is characterized by combined configuration of an adaptive array and an equalizer. In the proposed system. a pre-selecting adaptive array is installed first. By employing a specific training sequence and sampling timing at the receiver during the training period, the perfect correlation between the "desired signal"and "short delayed ISI"is achieved. Therefore, the preselecting adaptive array can extract the desired and ISI signals simultaneously, and the cascaded adaptive equalizer can provide the path-diversity gain without degradation by interference. The proposed system achieves a simple configuration and robustness against both ISI and CCI with a sufficient path diversity gain. In computer simulations, average BER characteristics of the proposed system were evaluated in a quasi-static Rayleigh fading channel. The simulation results showed that the system can reduce both long-delayed ISI and CCI efficiently, and that the expected path diversity gain is obtained even with strong CCI. They slso showed that the degradation is not so serious when the number of antenna elements is less than that of incoming signals.

• 社団法人電子情報通信学会の論文
• 1998-03-25

著者

• OHGANE Takeo

  Hokkaido University

• KARASAWA Yoshio

  ATR Adaptive Communications Research Laboratories

• DOI Yoshiharu

  ATR Adaptive Communications Research Laboratories

• Karasawa Yoshio

  Atr Adaptive Communications Res. Labs.

関連論文

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• Development and Evaluation of the SDMA Test Bed for PHS in the Field(Software Defined Radio Technology and Its Applications)
• CMA Adaptive Array Antennas Using Analysis and Synthesis Filter Banks(Special Section on Digital Signal Processing)
• Spatial Optical Signal Processing Beam Forming Network for 2-Dimensional Beam Steering(Photonic for Antenna Systems)(Special Issue on Recent Progress in Microwave and Millimeter-wave Photonics Technologies)
• ISI and CCI Canceller with Preselecting Adaptive Array and Cascaded Equalizer in Digital Mobile Radio
• The Software Antenna : A New Concept of Kaleidoscopic Antenna in Multimedia Radio and Mobile Computing Era (Special Issue on Mobile Computing)
• IEICE Transactions on Communications : Editor's Message

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