Outage probabilities in infrastructure-based single-frequency relay links

Authors:
Taneli Riihonen;Stefan Werner;Risto Wichman;Jyri Hämäläinen
Affiliations:
Helsinki University of Technology, Finland;Helsinki University of Technology, Finland;Helsinki University of Technology, Finland;Helsinki University of Technology, Finland
Venue:
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Year:
2009

Citing 5
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Abstract

This paper considers usage of a single-frequency mode for cell coverage extension in infrastructure-based relay links. We provide new closed-form expressions for outage probability by taking into account practical constraints such as interference due to frequency reuse and signal leakage between the relay transmitter and receiver. The analysis covers both decode-and-forward and amplify-and-forward protocols both in downlink and in uplink. For amplify-and-forward relaying, variable gain and fixed gain methods for transmit power normalization are discussed. Simulations show excellent agreement with theory and confirm that the single-frequency mode can be applied at the cost of tolerable signal degradation.