Study on wideband CDMA system in burst error environment

Abstract

This paper proposes a method for reducing burst errors in a wideband CDMA system under the radio propagation conditions. When high-speed mobile communication in a Rayleigh fading environment is assumed; fading at the maximum fading frequency occurs due to the moving speed, resulting in communication quality degradation by burst errors. We discuss the use of interleaving and repetition techniques in combination to reduce the number of burst errors. The effects of path diversity, power control and time diversity were evaluated as burst error reduction methods. The effect of the time diversity and repetition in an area involving little multipath and a high fading frequency, where the path diversity and transmission power control effects cannot be expected, are also evaluated.