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|Title:||Subcarrier and power allocation in relay-assistant OFDMA cellular system|
|Authors:||Da, B. |
Subcarrier and power allocation
|Source:||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|
|Appears in Collections:||Staff Publications|
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