TY - GEN
T1 - On optimal feedback allocation in multichannel wireless downlinks
AU - Ouyang, Ming
AU - Ying, Lei
PY - 2010
Y1 - 2010
N2 - This paper studies feedback resource allocation in the down-link of a Frequency Division Duplex (FDD) multichannel wireless system. We consider a downlink network with a single base station, L shared channels and N mobile users. Throughput optimal algorithms like theMaxWeight scheduling in general require the complete channel state information (with N × L link states) for scheduling, which could be unaffordably expensive when the number of users is large. In this paper, we consider the scenario where the base station allocates only limited uplink resource for acquiring channel state information. We first show that to support a fraction (1-ε) of the full throughput region (the throughput region with full channel state information), the base station needs to acquire at least Θ(L) link states at each time slot. We then propose a Weight Based Feedback allocation, named WBF, and show that WBF together with the MaxWeight scheduling achieves a fraction (1 - ε) of the full throughput region by acquiring at most Θ ( Llog 1/ε ) link states per time slot.
AB - This paper studies feedback resource allocation in the down-link of a Frequency Division Duplex (FDD) multichannel wireless system. We consider a downlink network with a single base station, L shared channels and N mobile users. Throughput optimal algorithms like theMaxWeight scheduling in general require the complete channel state information (with N × L link states) for scheduling, which could be unaffordably expensive when the number of users is large. In this paper, we consider the scenario where the base station allocates only limited uplink resource for acquiring channel state information. We first show that to support a fraction (1-ε) of the full throughput region (the throughput region with full channel state information), the base station needs to acquire at least Θ(L) link states at each time slot. We then propose a Weight Based Feedback allocation, named WBF, and show that WBF together with the MaxWeight scheduling achieves a fraction (1 - ε) of the full throughput region by acquiring at most Θ ( Llog 1/ε ) link states per time slot.
KW - Downlink scheduling
KW - Limited feedback
KW - Throughput optimality
UR - http://www.scopus.com/inward/record.url?scp=78649285314&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78649285314&partnerID=8YFLogxK
U2 - 10.1145/1860093.1860126
DO - 10.1145/1860093.1860126
M3 - Conference contribution
AN - SCOPUS:78649285314
SN - 9781450301831
T3 - Proceedings of the International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc)
SP - 241
EP - 250
BT - MobiCom'10 and MobiHoc'10 - Proceedings of the 16th Annual International Conference on Mobile Computing and Networking and 11th ACM International Symposium on Mobile Ad Hoc Networking and Computing
PB - Association for Computing Machinery
T2 - 11th ACM International Symposium on Mobile Ad Hoc Networking and Computing, MobiHoc 2010
Y2 - 20 September 2010 through 24 September 2010
ER -