APD Measurement for Evaluating Disturbances Related to the Performance of Digital Communication Systems


IEICE TRANSACTIONS on Communications   Vol.E88-B   No.8   pp.3235-3241
Publication Date: 2005/08/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.8.3235
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section of 2004 International Symposium on Electromagnetic Compatibility)
Category: Communications
electromagnetic disturbance measurement,  APD,  digital wireless communication,  BER,  spread spectrum,  

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The measured values of electromagnetic disturbances should strongly correlate with degradation in the communication quality of digital wireless communication systems. The Amplitude Probability Distribution (APD) of a disturbance represents statistical information as applicable measurement readings that meet the above requirement. In this paper, correlations between APD measurements of disturbances and the bit error rate (BER) as a quality degradation index for victim systems are quantitatively investigated. Disturbance regulation by APD measurements is discussed from the viewpoint of protecting systems from disturbances. This investigation specifically considers the situation in which a repetition pulse disturbance impacts PHS and W-CDMA systems assumed as victims. The results confirm high correlations between the APD and BER not only experimentally but also theoretically under some conditions. A disturbance regulation criterion based on APD measurements is thus proposed for compliance testing of electronic appliances with the potential to act as disturbance noise sources.