Cyclic prefix assisted code division multiple access communications system: a new approach for high-rate data transmission

Multiple access interference and inter-finger interference limit the capacity of conventional single carrier DS-CDMA systems. Even though multicarrier CDMA posses the advantages of conventional CDMA and OFDM, it suffers from two major implementation difficulties such as peak-to-average power ratio and high sensitivity to frequency offset and RF phase noise. This paper proposes a new approach to overcome the disadvantages of single carrier CDMA and multicarrier modulation. The system details are discussed together with different channel estimation and equalization methods. The proposed system is extensively simulated for different channel parameters.