The Research Of Multi-carrier CDMA Technology Application In Wireless Communication System

With the ever-increasing rate of the demand for the communication service range and the communication service rate, People had been beginning to research beyond 3G technologies, and make it have high volume data services, and improve communication system, in order to realize high data rate transmission capability with high bandwidth efficiency.With the fast advance of digital signal processing and integrated circuit technology, Multi-carrier CDMA technology combined with CDMA technology and OFDM technology has become one of the most research hot points, more and more scholar are beginning to research it. However, there are many key technologies to be realized before Multi-carrier CDMA technology comes true, channel estimation is one of the key technologies.Channel estimation is a key technology in communication domain, which is the basis of coherent detection, demodulation and equilibrium. Pilot-aided two dimensional channel estimation and pilot assisted two joint one dimensional channel estimation are too complex, this paper will introduce some simple channel estimation methods, and compare these methods performance by simulation.In the end, this paper introduced the method how to realize Multi-carrier CDMA transmitter, and analyzed the difficulties in the hardware and software debug.