Performance Evaluation of DS-CDMA IVC Based on Location-Oriented Code Allocation and Performance Improvement Using SIC in Urban Environment

Abstract

In ARIB STD T-109, the inter-vehicle communication (IVC) systems are based on the carrier sense multiple access/orthogonal frequency division multiplexing (CSMA/OFDM) scheme. However, there is concern that communication performance is degraded owing to hidden terminals. On the other hand, to reduce this effect, research has been conducted on simultaneous communication using direct spread-code division multiple access (DS-CDMA). However, when this method is applied in urban environment where there are many reflections and diffractions, there is concern regarding the degradation of communication performance by interference waves. In this paper, the performances of DS-CDMA IVC with various forms of primary modulation are compared and the performance of DS-CDMA IVC with successive interference canceller (SIC) is evaluated to reduce the effects of interfering waves.