A new multi-code / multi-carrier DS-CDMA system

Abstract

This paper presents a new multi-carrier DS-CDMA system with multi-code in which input data bits are first coded at a low rate (1/R) and every resulting R coded binary bits are then multiplexed with a set of multi-codes to produce code division multiplexing (CDM) super-bits, after serial-to-parallel conversion, they are spread spectrum and transmitted using M orthogonal carriers. Based on a conventional matched-filter and RAKE receiver for each carrier, its performance is analyzed partially and simulated. The numerical results show that the proposed scheme has the close bit error rate (BER) performance, but better anti-jamming ability compared to the normal multi-carrier DS-CDMA system.