Design Of Multiple Differential Receiver For Wireless Personal Communication

Hasrul' Nisham, Rosly (2006) Design Of Multiple Differential Receiver For Wireless Personal Communication. Project Report. UTeM, Melaka. (Submitted)

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Abstract

This project deals with the design of multiple differential receiver for wireless personal communications. The receiver is intended to be able to perform signal processing on a corrupted signal using the d[lferential detection scheme. The requirements for designing the entire receiver system involve software and hardware development. The type of encoding for the transmitted signal is in the form of Quadrature Phase Shift Keying (QPSK), which has been differentially shifted by 45 degree. leading it to be called pi/4-shift DQPSK. For the signal propagation through the channeL noises are introduced to cause distortion. This corrupted signal wi ll be accepted by receiver in pi/4-shift DQPSK. Then, the received signal wi ll be demodulated in the form of Pi/4-shift DQPSK in order to get the original signal form of QPSK. The corrupted signal from the transmitter will be filtered by filter. Software development is used to design the differential detection algorithm before designing additional peripheral circuit. Programming for the software is achieved in MATLAB. The type of differential detection scheme proposed is a multiple of a conventional differential detection. Simulation on the performance capabilities of both type of differential detection schemes were made. Results reveal the significant improvement of the multiple differential detection schemes over the convention one.

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