Process division between the transmitter and the receiver in synchronous multiuser communications

In this approach, the performance of CDMA system for transmission of digital data over time varying channels such as the HF mobile channels is improved. This approach is based on implementing considerations depends on block transmission techniques. The main idea presented here is to divide the equalization process between the transmitter and the receiver of the system with a certain ratio that maximize the signal to noise ratio (SNR). The channel characteristics should be known at the transmitter which is the requirement for all systems that employ coding at the transmitter, and it should be known at the receiver too which is very easy to be done.