This research project primarily aims to develop a new scheme for reducing the computational complexity of multiuser receivers to improve the processing gain and consequently reduce the multi-access interference. A deterministic formalization of the processing gain for a multiuser DS-CDMA system is presented. The formalization of the processing gain demonstrates that how the reduced BER could be used to achieve reasonable values of processing gain by which unwanted signals or interference can be suppressed relative to the desired signal at the receiving end. This research project not only is shown to substantially improve the performance of the multiuser detectors by means of reduced BER but also have a much lower multi-access interference.

Publications

  1. Syed S. Rizvi, Khaled M. Elleithy, and Aasia Riasat, “Deterministic Formalization of the Processing Gain for ReducingMAI in Wireless Multiuser DS-CDMA Systems,” 5th Annual IEEE Consumer Communications and Networking Conference (IEEE CCNC’2008), pp. 859-860, January 10 – 12, 2008 in Las Vegas, Nevada.
  2. Syed S. Rizvi, Khaled M. Elleithy, and Aasia Riasat, “Formularization of Processing Gain (PG) with SNR for an Optimum Multiuser Receiver,” accepted in International Symposium on Wireless Pervasive Computing (ISWPC-08) 2008, 7 – 9 May 2008 Santorini, Greece.
  3. Syed S. Rizvi, Khaled M. Elleithy, and Aasia Riasat, “The Impact of Reduced Computational Complexity of Multiuser Detectors on the Processing Gain in a Wireless DS-CDMA Multiuser System,” Proceedings of the 2007 International Conference on Wireless Networks (ICWN’07). Part of the 2007 World Congress in Computer Science, Computer Engineering, & Applied Computing (WORLDCOMP’07), pp. 70 – 76, Las Vegas, Nevada, USA, June 25-28, 2007.
  4. Syed S. Rizvi, Khaled M. Elleithy, and Aasia Riasat, “Use of Processing Gain to Suppress Multi Access Interference (MAI) in CDMA Based Multiuser Receiver,” International Wireless Communications and Mobile Computing Conference 2007 (IWCMC 2007), August 12-16, 2007, Honolulu, Hawaii (Accepted but not Presented)