Multiuser Detection for CDMA System with Optimization of Detector using ANN

Code division multiple Access is a widely used channel access method by radio technologies. This method is useful as many receivers can send data simultaneously over a single communication channel. Various multi detection methods are used for the purpose. The noise is the major problem of these systems that decrease the efficiency of the system. After this Decorrelating detector were used but the major drawback of using the tradiational detector was that the background noise and the interference of other users was still faced in the matched filtration. Also the computational cost was high. So in this paper an hybrid approach is presented that is used for decreasing the BER of the system. In this approach the traditional MMSE is upgraded. . A hybrid approach is given in which a detector is combined with the MMSE detector to give the better results. This approach is considered to better than the traditional approaches as the efficiency of the system is increased. Along with this the soft computing technique like ANN is used. . By using a soft computing algorithm the system is trained for various multi detection purposes from the results obtained it is concluded that the proposed technique is better and efficient than the traditional approaches as the BER system is decreased.