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Characterization of Relay Channels Using the Bhattacharyya Parameter

Summary: Characterization of Relay Channels Using the
Bhattacharyya Parameter
Josephine P. K. Chu, Andrew W. Eckford, and Raviraj S. Adve
Dept. of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
Dept. of Computer Science and Engineering, York University, Toronto, Ontario, Canada
E-mail: chuj@comm.utoronto.ca, aeckford@yorku.ca, rsadve@comm.utoronto.ca
Abstract--Relay systems have large and complex parameter
spaces, which makes it difficult to determine the parameter region
where the system achieves a given performance criterion, such
as probability of frame error. In this paper, we show that the
union bound (UB) and the Bhattacharyya parameter (BP) can be
used for fast analysis of the parameter space when error-control
coding is used. This is applicable when amplify-and-forward (AF)
or demodulate-and-forward (DemF) are used. For a given code
ensemble, the associated UB threshold is found and can be used
to define the signal-to-noise region where a given frame error rate
can be achieved. Using asymptotic results, the UB threshold can
be used to specify the signal-to-noise ratio region where successful
decoding can be achieved for large blocklength. In addition, the
UB with BP can be used when fractional cooperation is used,


Source: Adve, Raviraj - Department of Electrical and Computer Engineering, University of Toronto
Eckford, Andrew - Department of Computer Science, York University (Toronto)


Collections: Computer Technologies and Information Sciences; Engineering