Abstract
We design the wireless multimedia services system using orthogonal frequency division multiple access (OFDMA) schemes allowing cooperative relays in home area networks. The multihop transmission scheme by relay stations provide reliable services to users in dead spots like the cellar or the garden. For this system, we propose an adaptive subcarrier and transmit power allocation method that maximizes the system total data rate in a downlink transmission. We generally formulate the total data rate maximization problem and develop a resource allocation scheme to solve it. The scheme is derived via two parts: allocating the resource for users and making a decision to relay or not. Since these two works influence each other, the subcarriers and power should be assigned in consideration of whether to relay or not. We compare the performance of the proposed method with existing resource allocation schemes, the 1-hop transmission with dynamic resource allocation and 2-hop transmission with fixed resource allocation. By relaying and scheduling gain, the total data rate of the proposed scheme is greater than those of other schemes, and grows as the number of users in the system increases due to multiuser diversity effects.
| Original language | English |
|---|---|
| Title of host publication | Proceedings - Third International Conference on Natural Computation, ICNC 2007 |
| Pages | 702-706 |
| Number of pages | 5 |
| Volume | 5 |
| DOIs | |
| Publication status | Published - 2007 Dec 1 |
| Event | 3rd International Conference on Natural Computation, ICNC 2007 - Haikou, Hainan, China Duration: 2007 Aug 24 → 2007 Aug 27 |
Other
| Other | 3rd International Conference on Natural Computation, ICNC 2007 |
|---|---|
| Country | China |
| City | Haikou, Hainan |
| Period | 07/8/24 → 07/8/27 |
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All Science Journal Classification (ASJC) codes
- Applied Mathematics
- Computational Mathematics
- Modelling and Simulation
Cite this
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Relay OFDMA system for wireless multimedia services in home area networks. / Park, Kyungmin; Park, Jong Hyuk; Kim, Young Yong.
Proceedings - Third International Conference on Natural Computation, ICNC 2007. Vol. 5 2007. p. 702-706 4305134.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Relay OFDMA system for wireless multimedia services in home area networks
AU - Park, Kyungmin
AU - Park, Jong Hyuk
AU - Kim, Young Yong
PY - 2007/12/1
Y1 - 2007/12/1
N2 - We design the wireless multimedia services system using orthogonal frequency division multiple access (OFDMA) schemes allowing cooperative relays in home area networks. The multihop transmission scheme by relay stations provide reliable services to users in dead spots like the cellar or the garden. For this system, we propose an adaptive subcarrier and transmit power allocation method that maximizes the system total data rate in a downlink transmission. We generally formulate the total data rate maximization problem and develop a resource allocation scheme to solve it. The scheme is derived via two parts: allocating the resource for users and making a decision to relay or not. Since these two works influence each other, the subcarriers and power should be assigned in consideration of whether to relay or not. We compare the performance of the proposed method with existing resource allocation schemes, the 1-hop transmission with dynamic resource allocation and 2-hop transmission with fixed resource allocation. By relaying and scheduling gain, the total data rate of the proposed scheme is greater than those of other schemes, and grows as the number of users in the system increases due to multiuser diversity effects.
AB - We design the wireless multimedia services system using orthogonal frequency division multiple access (OFDMA) schemes allowing cooperative relays in home area networks. The multihop transmission scheme by relay stations provide reliable services to users in dead spots like the cellar or the garden. For this system, we propose an adaptive subcarrier and transmit power allocation method that maximizes the system total data rate in a downlink transmission. We generally formulate the total data rate maximization problem and develop a resource allocation scheme to solve it. The scheme is derived via two parts: allocating the resource for users and making a decision to relay or not. Since these two works influence each other, the subcarriers and power should be assigned in consideration of whether to relay or not. We compare the performance of the proposed method with existing resource allocation schemes, the 1-hop transmission with dynamic resource allocation and 2-hop transmission with fixed resource allocation. By relaying and scheduling gain, the total data rate of the proposed scheme is greater than those of other schemes, and grows as the number of users in the system increases due to multiuser diversity effects.
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UR - http://www.scopus.com/inward/citedby.url?scp=38049038839&partnerID=8YFLogxK
U2 - 10.1109/ICNC.2007.603
DO - 10.1109/ICNC.2007.603
M3 - Conference contribution
SN - 0769528759
SN - 9780769528755
VL - 5
SP - 702
EP - 706
BT - Proceedings - Third International Conference on Natural Computation, ICNC 2007
ER -