連続波形Walsh直接拡散コードを用いた差分CDMAへのBCH誤り訂正符号の特殊符号方式の適用

Abstract

In this paper, the new generator of continuous Walsh code as spread - spectrum code and the new decoding method of BCH code as t-error correction (t〓2) code are applied to differential coding CDMA (abbreviated in diffCDMA) system. In this diffCDMA system, the instantaneous phase has already proposed in [1] and [2]. As three important technologies to improve high capacity and conquer the fatal transmission error when communications are carried from high speed running mobiles through such urban environment as rapid multi-ray Rayleigh channel. The error correction technologies are discussed in diffCDMA system with continuous Walsh code from the view points both of mathematical problems for communication theory and electronic circuit implementation.