| Publisher | Institute of Electrical and Electronics Engineers | ||
|---|---|---|---|
| Format | 275.5KB PDF | Date added | 14 Nov 2005 |
| Topics | Wireless LAN, Wireless Internet, Mobile - Wireless Communications | ||
| Downloads | 68 | ||
This paper considers the issue of optimal subcarrier allocation in OFDMA wireless networks when the arrivals and channels are stochastic and time-varying. The objective is to minimize the long-term average packet delay over multiple time epochs. This paper shows by example that water-filling-based subcarrier allocation policy which maximizes throughput at each time epoch is not optimal in this case. This is because such policy ignores variable queue state information, while in fact such information is necessary to minimize long-term average delay. This paper presents an optimal policy for a special case of ON-OFF channel and homogeneous users. For general channel, the optimal policy is complicated and not known.
Did you find this white paper useful?
19 out of 43 users found this white paper useful
Related white papers
802.11n Access Points and Power over Ethernet: Key Considerations
In this 5 page report, you'll discover more about the key technical considerations when making the move to 802.11n. The report provides: ? An overview of PoE ? Information on verifying power...
Practical Considerations for deploying 802.11n whitepaper
There is a lot of confusion surrounding the capabilities and status of the new 802.11n WiFi standard; understandable since the standard is very broad and has been slow to develop. There...
Intel Case Study: Strix Systems Access/One Network
The difference between a Strix Systems Access/One Network and a typical enterprise network is simple: wires or, no wires. Going where only wired solutions have gone before, Strix Systems designed...
State University of New York (SUNY) Stony Brook Unwires Hundreds With Confidence
Established in 1957, Stony Brook is the largest university in the State University of New York (SUNY) educational system. Stony Brook needed a WLAN system that was easy to deploy...
Modulation-Index Estimation in a Combined CPM/OFDM Receiver
The Software Defined Radio (SDR) project combines two different types of standards, Bluetooth and HiperLAN/2 on one flexible platform. The implemented part consists of the radio front-end of a receiver,...
Mobile Locality-Aware Multimedia on Mobile Computing Devices: A Bluetooth Wireless Network Infrastructure for a Multimedia Guidebook
This paper describes the implementation of a Bluetooth Village Guide Book (VGB) scenario for use in the Kelvin Grove Urban Village located in Brisbane, Australia. An Information Point Station Network...
Quality of Service Aware MAC Based on IEEE 802.11 for Multihop Ad-Hoc Networks
Real-time multimedia applications necessitate predictable network resources. Quality of Service (QoS) support for such applications in mobile ad hoc networks (MANETs) requires acceptable channel conditions, QoS-aware mechanisms for channel access,...
