Abstract
We consider subcarrier assignment and power allocation in OFDMA wireless mesh networks. Traditional full spatial reuse increases bandwidth efficiency but ignores multiuser diversity in the multi-hop network. Our method enables fractional spatial reuse with which multiuser diversity can also be exploited. The original optimization problem is decomposed into three tractable subproblems. First, subcarrier numbers on each link are decided according to end-to-end requirement and node power constraint. Then a novel link grouping method is proposed to utilize fractional spatial reuse in the network. Finally, a tabubased subcarrier assignment algorithms is designed to assign subcarriers to groups to exploit multiuser diversity. Performance is evaluated under various network sizes to investigate the impact of spatial reuse and simulation results show our proposed scheme achieves multiuser diversity in spatial reuse scenarios.
| Original language | English (US) |
|---|---|
| Title of host publication | IEEE International Conference on Communications |
| DOIs | |
| State | Published - 2010 |
| Externally published | Yes |
| Event | 2010 IEEE International Conference on Communications, ICC 2010 - Cape Town, South Africa Duration: May 23 2010 → May 27 2010 |
Other
| Other | 2010 IEEE International Conference on Communications, ICC 2010 |
|---|---|
| Country | South Africa |
| City | Cape Town |
| Period | 5/23/10 → 5/27/10 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Computer Networks and Communications
Cite this
Exploiting multiuser diversity in OFDMA wireless mesh networks by fractional spatial reuse. / Xu, Jie; Wu, Yiqun; Niu, Zhisheng; Huang, Jinri.
IEEE International Conference on Communications. 2010. 5502324.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Exploiting multiuser diversity in OFDMA wireless mesh networks by fractional spatial reuse
AU - Xu, Jie
AU - Wu, Yiqun
AU - Niu, Zhisheng
AU - Huang, Jinri
PY - 2010
Y1 - 2010
N2 - We consider subcarrier assignment and power allocation in OFDMA wireless mesh networks. Traditional full spatial reuse increases bandwidth efficiency but ignores multiuser diversity in the multi-hop network. Our method enables fractional spatial reuse with which multiuser diversity can also be exploited. The original optimization problem is decomposed into three tractable subproblems. First, subcarrier numbers on each link are decided according to end-to-end requirement and node power constraint. Then a novel link grouping method is proposed to utilize fractional spatial reuse in the network. Finally, a tabubased subcarrier assignment algorithms is designed to assign subcarriers to groups to exploit multiuser diversity. Performance is evaluated under various network sizes to investigate the impact of spatial reuse and simulation results show our proposed scheme achieves multiuser diversity in spatial reuse scenarios.
AB - We consider subcarrier assignment and power allocation in OFDMA wireless mesh networks. Traditional full spatial reuse increases bandwidth efficiency but ignores multiuser diversity in the multi-hop network. Our method enables fractional spatial reuse with which multiuser diversity can also be exploited. The original optimization problem is decomposed into three tractable subproblems. First, subcarrier numbers on each link are decided according to end-to-end requirement and node power constraint. Then a novel link grouping method is proposed to utilize fractional spatial reuse in the network. Finally, a tabubased subcarrier assignment algorithms is designed to assign subcarriers to groups to exploit multiuser diversity. Performance is evaluated under various network sizes to investigate the impact of spatial reuse and simulation results show our proposed scheme achieves multiuser diversity in spatial reuse scenarios.
UR - http://www.scopus.com/inward/record.url?scp=77955362432&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77955362432&partnerID=8YFLogxK
U2 - 10.1109/ICC.2010.5502324
DO - 10.1109/ICC.2010.5502324
M3 - Conference contribution
SN - 9781424464043
BT - IEEE International Conference on Communications
ER -