Abstract
We consider the problem of joint congestion control and power control with outage constraint in an interference-limited multihop wireless network. We transform the original nonconvex problem into a convex programming problem and develop a message-passing distributed algorithm that can attain the global optimal source rate and link transmit power. This algorithm however requires a larger control message size than that of the conventional scheme, which increases network overheads. We continue to develop a practical near-optimal distributed algorithm that only requires local signal-to-interference ratio (SIR) measurement to limit the size of the message. Numerical results show that both schemes have nearly identical performance and outperform the conventional scheme.
| Original language | English |
|---|---|
| Article number | 6105582 |
| Pages (from-to) | 889-894 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Vehicular Technology |
| Volume | 61 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 2012 |
Bibliographical note
Funding Information:Manuscript received April 24, 2011; revised August 5, 2011 and October 24, 2011; accepted November 11, 2011. Date of publication December 15, 2011; date of current version February 21, 2012. This work was supported by the Ministry of Knowledge Economy, Korea, through the Information Technology Research Center Support Program supervised by the National IT Promotion Agency under Grant NIPA-2011-(C1090-1121-0003). C. S. Hong is the corresponding author. The review of this paper was coordinated by Prof. P. Lin.
Keywords
- Congestion control
- Convex optimization
- Distributed algorithms
- Power control
- Utility maximization
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