An Interference Analyzing System for CDMA Signals Utilizing Lone Pilot Responses and Additional Dummy Pilot Response
نویسندگان
چکیده
A lone pilot assisted CDMA system is capable of separating the interference components included in a received input by solving a simultaneous equation. This real performance, however, depends on the property of the lone pilot response matrix which is given by the user spreading sequences and the multipath conditions. Consequently, it does not work well whenever the matrix has a wrong property. This paper proposes an e ective technique which improves the property by introducing a virtual user into a group of real users to be served. The simulation results indicate a remarkable improvement in the error rate performance. In addition, this technique may little reduce such excellent frequency utilization e ciency that the lone pilot assisted system has achieved. key words: CDMA,SS,Optimum receiver, Noise estimation,Pilot Assisted System
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