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Degree

Master of Science, University of Akron, Electrical Engineering, 2004.

Abstract

A new wireless communication system denoted as Multi-Code Multi-Carrier CDMA (MC/MC-CDMA), which is the combination of Multi-Code CDMA and Multi-Carrier CDMA, is analyzed in this thesis. This system can satisfy multi-rate services using multicode schemes and multi-carrier services used for high rate transmission. In addition, the new MC/MC-CDMA system is robust against frequency selective fading, is good for narrowband interference rejection, and has higher spectral efficiency. The system is evaluated in Nakagami slow fading channel model, which can be used to model urban and suburban environments. At the receiver, the system employs three diversity schemes; namely, selection diversity, equal gain combining and maximal ratio combining. The improvements of the diversity schemes are analyzed and compared. Also the system performance is presented and compared with that of other systems such as conventional CDMA system, multi-code CDMA system, and multi-carrier CDMA system. In addition, the performance of the system in the presence of a narrow jammer signal is considered and analyzed. Results indicate that the performance of the MC/MC-CDMA system is superior to that of the conventional CDMA, multi-code CDMA and multi-carrier CDMA systems. It is also shown that the MC/MC-CDMA system is suitable for high data rate and multi-rate services.

Keywords

Multi-Code; Multi-Carrier; CDMA

Advisor

Okechukwu C. Ugweje

Pages

128p.

Document number: akron1101937252
Permalink: http://rave.ohiolink.edu/etdc/view?acc_num=akron1101937252

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