Image Transmission in Multi Carrier CDMA System with Different Equalization Techniques

Abstract

In the present scenario of digital communication, a communication system with high spectral efficiency and power efficiency is required. The need for such a system that provides high data rates is achieved with multicarrier modulation schemes. Thus Multicarrier Code Division Multiple Access (MC-CDMA) is one of the best choices for next generation wireless systems. MC-CDMA is a combination of two advanced technologies such as orthogonal frequency division multiplexing (OFDM) and code division multiple access (CDMA). The CDMA has an advantage of efficient spectral utilization and OFDM is more resistant to multipath fading and Inter Symbol Interference (ISI). Further to reduce fading and noise, linear detectors such as Minimum Mean Squared Error (MMSE), Zero forcing (ZF) and Maximum Ratio Combining (MRC) are used at the reciever. The performance of image transmission in a MC-CDMA system using various equalizers are also compared and analysed.