A Closed-Form Expression of Optimal Time for Two-Way Relay Using DF MABC Protocol

In this paper, we propose the optimal time allocation for two-way relay using decode-and-forward (DF) multiple access broadcast (MABC) protocol. We analytically determine the optimal transmit time durations for the first and the second time slots, which maximize the achievable sum rate under a sum t...

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Veröffentlicht in:	IEEE communications letters 2014-05, Vol.18 (5), p.721-724
Hauptverfasser:	Shim, Yeonggyu, Park, Hyuncheol
Format:	Artikel
Sprache:	eng
Schlagworte:	Access methods and protocols, osi model Applied sciences Channel state information Closed-form solutions decode-and-forward Exact sciences and technology Protocols Relays Resource management Stability analysis Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Teleprocessing networks. Isdn time allocation Time factors Transmission and modulation (techniques and equipments) Two-way relay channel
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Beschreibung
Zusammenfassung:	In this paper, we propose the optimal time allocation for two-way relay using decode-and-forward (DF) multiple access broadcast (MABC) protocol. We analytically determine the optimal transmit time durations for the first and the second time slots, which maximize the achievable sum rate under a sum time constraint for a given squared magnitude of the channel coefficients and transmit power values. Numerical results show that the achievable sum rate of the optimal time allocation is greater than or equal to that of the equal time allocation.
ISSN:	1089-7798 1558-2558
DOI:	10.1109/LCOMM.2014.022514.132755