Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/71893
Title: Subcarrier and power allocation in relay-assistant OFDMA cellular system
Authors: Da, B. 
Ko, C.C. 
Keywords: Amplify-and-forward
Capacity maximization
Cooperative diversity
Relay-assistant OFDMA
Subcarrier and power allocation
Issue Date: 2008
Citation: Da, B.,Ko, C.C. (2008). Subcarrier and power allocation in relay-assistant OFDMA cellular system. 2008 14th Asia-Pacific Conference on Communications, APCC 2008 : -. ScholarBank@NUS Repository.
Abstract: In this paper, resource allocation problems in a downlink relay-assistant OFDMA cellular system are studied. Amplify-and-forward relaying strategy is utilized at each relay station to assist signal transmission while half-duplex transmission protocol is adopted. A joint optimization of subcarrier-pairing in two consecutive time slots and power allocation on each subcarrier in each time slot is investigated through a capacity maximization problem constrained on independently available power at BS and RS. Some fundamental principles to achieve optimality are given while a few subcarrier and power allocation algorithms are proposed. The performance of these resource allocation algorithms is evaluated by computer simulation. copyright © 2008 IEICE.
Source Title: 2008 14th Asia-Pacific Conference on Communications, APCC 2008
URI: http://scholarbank.nus.edu.sg/handle/10635/71893
ISBN: 4885522323
Appears in Collections:Staff Publications

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