Date of Award

Spring 2011

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Electrical & Computer Engineering

Program/Concentration

Electrical and Computer Engineering

Committee Director

Dimitrie Popescu

Committee Member

Jiang Li

Committee Member

Danda B. Rawat

Call Number for Print

Special Collections LD4331.E55 T37 2011

Abstract

Broadband wireless access has become the best way to meet the growing demand for fast Internet connections. WiMAX is one of the most promising broadband access technologies that allows fast deployment as well as low maintenance costs. WiMAX allows efficient use available bandwidth by using orthogonal frequency division multiplexing (OFDM) which is an efficient multi-carrier modulation technique. Diversity is a method for improving the reliability of a signal in fading environments by using two or more communication channels and is usually achieved by multiple antenna techniques.

In this thesis, receiver side diversity combining methods are studied and the performance of WiMAX Systems with multiple receive antennas is analyzed using numerical results obtained from simulations. This study discusses diversity techniques and explains the basic parameters with mathematical calculations. Simulations include the Bit Error Rate (BER) of a WiMAX system with maximal ratio combining (MRC) and Selection Combining (SC) diversity techniques which are used to increase the communication system performance especially in fading environments. The simulation tool used in this thesis is MATLAB. Various scenarios are simulated and analyzed in terms of BER performance.

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DOI

10.25777/wsfh-2r33

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