COOPERATIVE COMMUNICATIONS FOR LTE-ADVANCED SYSTEMS: DOWNLINK RELAY AND PERFORMANCE OPTIMIZATION
Date
2012-12-20
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Abstract
The Third Generation Partnership Project's Long Term Evolution-Advanced (LTE-A)
is considering an option for relay networks to provide cost-effective throughput
enhancement and coverage extension. While analog repeaters have been used to
enhance coverage in commercial cellular networks, the use of more sophisticated
fixed relays is relatively new. The main challenges faced by relay deployments in
cellular systems are designing an improved and efficient relaying protocol,
improving the desired signal and overcoming the extra interference added by the
presence of relays specifically at cell-edge regions. Most prior works on relaying do
not consider relay integration in cellular LTE-A systems. In this dissertation, we
propose and investigate the performance of a modified relaying protocol, the
Enhanced-Decode-and-Forward (E-DF), which improves diversity and data rate and
reduces the symbol error rate. The dissertation also proposes and analyzes the
performance of several half-duplex downlink relay schemes in interference-limited
cellular systems. These schemes are – The Omni-Relay (OR) scheme, The
Directional-Relay (DR) scheme and The In-band Relay (IR) scheme. The average
signal-to-interference plus noise ratio and average capacity performances of each
scheme are analyzed for each relay type, antenna pattern as well as power and
frequency resources allocation.
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Keywords
Engineering--Electronics and Electrical
Citation
MAHASNEH, HASSAN. ALI. (2012). COOPERATIVE COMMUNICATIONS FOR LTE-ADVANCED SYSTEMS: DOWNLINK RELAY AND PERFORMANCE OPTIMIZATION (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/25462