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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Lapiccirella, F.E. Xin Liu Zhi Ding |
| Copyright Year | 2002 |
| Abstract | In this paper, we investigate distributed control of multiple secondary users attempting to access the channel of a high priority primary user. Our aim is to maximize the sum cognitive (secondary) user throughput under the constraint of primary user's queue stability. We consider the effect of primary user link adaptation that allows the primary transmitter (PTx) to adapt its transmission rate in response to the secondary interference-level at the primary receiver (PRx). To control the sum secondary interference to PRx beyond the traditional collision-avoidance paradigm, we propose a novel power-control algorithm for secondary nodes to function. To develop such a distributed algorithm and to improve secondary user adaptability, we allow secondary nodes to monitor primary's radio link control information on the feedback channel. We present practical schemes that approximate the optimum solution without relying on global channel information at each secondary node. |
| Starting Page | 112 |
| Ending Page | 122 |
| Page Count | 11 |
| File Size | 351881 |
| File Format | |
| ISSN | 15361276 |
| Volume Number | 12 |
| Issue Number | 1 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-01-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Interference Stability analysis Queueing analysis Throughput Optimization Cognitive radio Algorithm design and analysis Lyapunov optimization Wireless networks cognitive radios multiple access control wireless sensor networks |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Mathematics Electrical and Electronic Engineering Computer Science Applications |
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