IMPROVING HANDOFF IN MOBILE COMMUNICATION SYSTEMS USING BIT ERROR RATE OPTIMIZATION
Publication Date : 31/01/2017
In the concept of handoff performance in mobile communication, Bit Error Rate (BER) was not fully considered, hence this dissertation focused on Mobility Management Scheme (MMS) in mobile communication using BER as sensitive parameter as well as throughput, media access delay and call drop. Multilinks Nigeria was used as the research test bed. A Multilink base station (mast) of height 32m with ID number HT/SE/NE/008 located at longitude N06 0 27’53.2” and E007 0 33’09.6 Emene Enugu (Enugu State Nigeria) with transmission power (TX power) 35dBw and transmission frequency 881.25MHz was used. A BER implementation model, MATLAB Simulink was developed while showing the validation results. The Gaussian Minimum Shift Keying (GMSK) modulator was used in the model to provide spectrally efficient modulation scheme which leads to a good BER performance and self-synchronizing capability. Empirical Mode decomposition (EMD) was used further to process the signals. The validated result showed that at signal to noise ratio (SNR) of 5, BER of the existing model was 0.006 and the proposed model was 3 at the same BER which resulted to a coding gain of 2dB. This showed that the proposed system performs better than the existing one; therefore the system achieved a good reliability as a transceiver over the existing system. Also, an empirical study on the Quality of Service (QoS) metrics for micro and macro mobility was achieved with much improvement in micro mobility compared with macro mobility.
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