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2. PHD Thesis / Tesis PHD
3. Faculty of Engineering and Built Environment / Fakulti Kejuruteraan dan Alam Bina

Title:	Development of a software defined radio model and implementation for a wireless communication system
Authors:	Muhammad Islam (P45105)
Supervisor:	M A Hannan, Assoc. Prof. Dr.
Keywords:	Wireless communication systems Radio frequency modulation--Computer programs Software radio Universiti Kebangsaan Malaysia -- Dissertations Dissertations, Academic -- Malaysia
Issue Date:	21-Jun-2012
Description:	Software Defined Radio (SDR) is a program-based research pursuit that is used to increase the lifetime of hardware components in terms of better control through software-defined modules. SDR is a feasible solution for reconfigurable radios, which can perform functions attuned to be more adaptable to changing requirements on the same hardware. The flexibility offered by SDR plays an essential role in allowing radio frequency (RF) communication systems to support more applications conveniently. The baseband section of a wireless communication system is first simulated and then implemented on an appropriate hardware platform. In this thesis, a simulation-based SDR model is developed and then implemented on a Small Form Factor SDR development platform (SFF SDR DP). The model includes modulation, transmission, and demodulation with a matching filter. The model based on RF signal concepts efficiently evaluates the performance of multi-array phase shift keying (PSK), high data rate Quadrature amplitude modulation (QAM), and Pilot Symbol Assisted Modulation (PSAM) modulation schemes. The performance of these modulation techniques are evaluated when the system is subjected to a number of users, noise, and to interference experienced by the channel. Additive White Noise Gaussian and the multipath Rayleigh fading are introduced in the channel. The system is analyzed with the use of constellation and eye diagrams for the modulation techniques. The SDR model is also developed for a Multiple Input Single Output (MISO) platform, which transmits and receives information reliably at the receiver side. The performance evaluation of MISO is based n its bit-error rate (BER) and signal-to-noise ratio (SNR) under a channel with defined fading to achieve better results. The degradation is also verified using a different roll-off factor defined in the filter. The performance of the developed system under each technique is evaluated in terms of BER versus SNR. Results show that the developed model has lower performance in the transmission of RF signals using PSK modulation, particularly for low SNR values. The developed system also transmits the baseband signal with the best performance using the QAM and PSAM schemes, even in the presence of high noise, unlike other modulation schemes. The simulation results exceed 90% for the two modulation schemes (QAM and PSAM), which show possible solutions for future SDR in similar wireless communication systems. Additionally, the obtained results show that the PSAM transceiver has achieved high-level data transmission accuracy. The performance of the system in real time is also analyzed by implementing the system in a hardware using an SFF SDR DP. A comparison of the simulation results with the results obtained from the hardware platform is presented and discussed. The simulation and experimental results are almost identical, demonstrating the effectiveness of the system.,Certification of Master's / Doctoral Thesis" is not available
Pages:	167
Call Number:	TK5103.4875.I848 2012 3 tesis
Publisher:	UKM, Bangi
Appears in Collections:	Faculty of Engineering and Built Environment / Fakulti Kejuruteraan dan Alam Bina

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