Accession Number : AD0285511

Title :   EFFECTS OF IMPULSE NOISE ON DIGITAL DATA TRANSMISSION

Corporate Author : POLYTECHNIC INST OF BROOKLYN N Y MICROWAVE RESEARCH INST

Personal Author(s) : BODONYI,ANDREW B.

Report Date : 11 DEC 1961

Pagination or Media Count : 1

Abstract : Presented are the basic characteristics of i pulse noise and effects of impulse noise on various types of binary data transmission systems. The sources, and properties of such impulse noise, in contrast with gaussian noise are discussed. A method is described for the experimental comparative evaluation of bit error rates in presence of additive impulsive noise. The method is shown to permit unique comparison between the three modulation schemes tested, namely on/off carrier, frequency shift and diphase (phase reversal keying, with coherent detection). The major conclusions drawn for these experiments are: (1) The choice of modulation scheme has a lot greater effect on the overall error rates in presence of impulse noise than it does for the gaussian case. (2) The simple error-detecting and error-correcting systems, designed to combat the effects of gaussian noise, can be utilized only to a fraction of their theoretical advantage in case of impulse noise. (3) The best results can be obtained from the coherent PSK system at high signal-to-noise ratios. (Author)

Descriptors :   *DATA TRANSMISSION SYSTEMS, *DIGITAL SYSTEMS, *NOISE (RADIO), ANALYSIS, CODING, ERRORS, FREQUENCY SHIFT KEYERS, PHASE SHIFT CIRCUITS, PROBABILITY, PULSE MODULATION, SEQUENCES(MATHEMATICS), SIGNAL-TO-NOISE RATIC, THEORY

Distribution Statement : APPROVED FOR PUBLIC RELEASE