Design And Development Of Multiple Differential Transceiver At 2.0 GHz For Third Generation Mobile Communication System

Muhammad Syahrir , Johal and Mohamad Kadim , Suaidi and Abdul Rani , Othman and Redzuan, Abdul Manap and Hairulisam, Md Dom (2007) Design And Development Of Multiple Differential Transceiver At 2.0 GHz For Third Generation Mobile Communication System. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Third generation mobile communication system is widely used nowadays. One of its parameter standard, which is QPSK modulation has been adopted by International Telecommunication Union (ITU) to be used in IMT-2000. However, due to amplitude variations introduced in QPSK, a rather robust and reliable data modulation technique, namely the 7t/4-shift Differential QPSK is proposed. For detection purposes, two types of detectors are evaluated for their performance in A WGN and Rayleigh fading channels. A differential detection technique called multiple differential detection technique which uses maximum-likelihood sequence estimation (MLSE) of the transmitted phases is compared with conventional differential detection which uses symbol-by-symbol detection. Simulation was done using MATLAB software. By using some of the IMT- 2000 standard parameters, the simulation results show that multiple differential detection scheme performs much better than conventional differential detection scheme. The results obtained are reported and discussions about these results are provided. Recommendations and comments were made to overcome the difficulties and problems that have been faced in this project.

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