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A Framework for Implementation and Evaluation of Cooperative Diversity in Software-Defined Radio

thesis
posted on 2008-12-19, 00:00 authored by Glenn Joseph Bradford
Increasing data rates in wireless devices is particularly challenging due to the presence of many impairments in the medium, including multipath fading. Diversity techniques are a means of increasing transmission reliability in multipath environments. This thesis focuses on cooperative diversity, a concept that obtains spatial diversity via relaying. Cooperative diversity encompasses a broad range of issues, from the physical layer through network layer, making the emerging reconfigurable technology of software-defined radio ideal for experimentation.

The main contribution of this work is the development of an extendable experimental framework for implementation and analysis of cooperative protocols. A decode-and-forward (DF) relay network is constructed and analyzed by means of received symbol distributions and bit error rate (BER) versus signal-to-noise ratio (SNR) curves. The former shows a shift in the distribution of instantaneous SNR for both simple and selective DF, while the latter indicates that only the selective scheme actually achieves a diversity gain.

History

Date Modified

2017-06-05

Research Director(s)

Dr. J. Nicholas Laneman

Degree

  • Master of Science in Electrical Engineering

Degree Level

  • Master's Thesis

Language

  • English

Alternate Identifier

etd-12192008-024346

Publisher

University of Notre Dame

Program Name

  • Electrical Engineering

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