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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Nekouei, E. Inaltekin, H. Dey, S. |
| Copyright Year | 2013 |
| Description | Author affiliation: Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Melbourne, VIC, Australia (Nekouei, E.; Dey, S.) || Dept. of Electr. & Electron. Eng., Antalya Int. Univ., Antalya, Turkey (Inaltekin, H.) |
| Abstract | This paper studies optimal distributed power allocation and scheduling policies (DPASPs) for distributed total power and interference limited (DTPIL) cognitive multiple access networks in which secondary users (SU) independently perform power allocation and scheduling tasks using their local knowledge of secondary transmitter secondary base-station (STSB) and secondary transmitter primary base-station (STPB) channel gains. In such networks, transmission powers of SUs are limited by an average total transmission power constraint and by a constraint on the average interference power that SUs cause to the primary base-station. We first establish the joint optimality of water-filling power allocation and threshold-based scheduling policies for DTPIL networks. We then show that the secondary network throughput under the optimal DPASP scales according to $1/en_{h}$ log log (N), where $n_{h}$ is a parameter obtained from the distribution of STSB channel power gains and N is the total number of SUs. From a practical point of view, our results signify the fact that distributed cognitive multiple access networks are capable of harvesting multiuser diversity gains without employing centralized schedulers and feedback links as well as without disrupting primary's quality-of-service (QoS). |
| Starting Page | 1665 |
| Ending Page | 1669 |
| File Size | 178216 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781479904464 |
| ISSN | 21578117 |
| DOI | 10.1109/ISIT.2013.6620510 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-07-07 |
| Publisher Place | Turkey |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Throughput Resource management Interference Fading Cognitive radio Educational institutions Scattering |
| Content Type | Text |
| Resource Type | Article |
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