Experimental and theoretical analysis of adjacent channel interference characteristics caused by two digital PSK signals

Tomonori Yamada, Koichi Ebata, Takashi Nakanishi, Fumio Takahata

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)

    Abstract

    Adjacent channel interference characteristics due to two PSK signals are discussed based on experimental and theoretical analysis. Experiments were conducted in-house and by using a Ku-band satellite. The experimental approach indicates that the interference characteristics (bit error rate) depend on the ratio of interference to desired signal power for the weak interference, irrespective of different interference conditions. The theoretical approach proposes the estimation of interference characteristics based on the amplitude probability density function of interference signal components. It is found from quantitative evaluation that although the conventional method, which treats interference as thermal noise, estimates the interference characteristics well only for the weak interference, the proposed method estimates the interference characteristics well for both weak and strong interference. Finally, the required increase of the signal power in compensation for the degradation of the bit error rate and achievement of the objective bit error rate is discussed.

    Original languageEnglish
    Pages (from-to)92-102
    Number of pages11
    JournalElectronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)
    Volume83
    Issue number7
    Publication statusPublished - 2000

    Keywords

    • Estimation
    • In-house experiment
    • Interference
    • Interference ratio
    • QPSK
    • Satellite experiment

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Electrical and Electronic Engineering

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