Relay Selection with ANC and TDBC Protocols in Bidirectional Relay Networks

We study relay selection (RS) with the analog network coding (ANC) and time division broadcast (TDBC), which are two major amplify-and-forward (AF)-based protocols in bidirectional relay networks. We consider a bidirectional network consisting of two different end-sources and multiple relays, where...

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Bibliographic Details
Published in:IEEE transactions on communications 2010-12, Vol.58 (12), p.3500-3511
Main Authors: MINCHUL JU, KIM, Il-Min
Format: Article
Language:English
Subjects:
Access methods and protocols, osi model
Algorithms
Amplify-and-forward (AF)
analog network coding (ANC)
Antennas
Applied sciences
Approximation methods
AWGN
Bidirectional
Bidirectional control
bidirectional relay network
Coding, codes
Exact sciences and technology
Exact solutions
Information, signal and communications theory
Mathematical analysis
Mutual information
Networks
outage probability
Outages
Protocol
Protocol (computers)
Protocols
Radiocommunications
Relay
Relay networks
relay selection (RS)
Relays
Signal and communications theory
Signal to noise ratio
Studies
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
time division broadcast (TDBC)
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Summary:We study relay selection (RS) with the analog network coding (ANC) and time division broadcast (TDBC), which are two major amplify-and-forward (AF)-based protocols in bidirectional relay networks. We consider a bidirectional network consisting of two different end-sources and multiple relays, where each terminal has a single antenna and operates in a half-duplex mode. In this network, a single best relay is selected depending on channel conditions to help bidirectional communication between the two end-sources. Specifically, we first consider RS schemes for the ANC and TDBC protocols based on a max-min criterion to minimize the outage probabilities. Then, for the RS in the ANC protocol, we derive a closed-form expression of the outage probability; for the RS in the TDBC protocol, we derive a one-integral form of the outage probability and its lower bound in closed-form. Numerical results confirm that the closed-form expression of the ANC protocol and the one-integral form of the TDBC protocol are very accurate, and that the closed-form lower bound of the TDBC protocol is also tight.
ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2010.101210.090585