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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hailan Peng Fujii, T. |
| Copyright Year | 2012 |
| Description | Author affiliation: Advanced Wireless Communication Research Center, The University of Electro-Communications, Tokyo, Japan (Hailan Peng; Fujii, T.) |
| Abstract | This paper presents a joint resource allocation and interference avoidance algorithm for uplink transmissions in a multi-cell cognitive radio network (CRN), which overlays with a multi-cell primary network (PN). We consider a primary willingness based coexistent architecture. Primary base stations will broadcast pilot signals and interference margins to the CRN for interference channel evaluation and power control. The objective of the algorithm is to maximize the sum rate of cognitive radio cells without causing unacceptable interference to primary receivers, where Lagrangian duality based technique has been utilized to solve the maximization problem and jointly allocate the subchannels and power for each user. The fairness among users is considered within the joint resource allocation to guarantee that the instantaneous rate for each user is larger than a given minimum rate. Simulation results show the efficiency of our algorithm, which has good convergent performance. Moreover, compared to the conventional schemes, the proposed algorithm can satisfy the fairness well, and also obtain a large gain on cell-edge user throughput only with a small reduction in cell sum rate. |
| Starting Page | 1348 |
| Ending Page | 1353 |
| File Size | 1014536 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781467304368 |
| ISSN | 15253511 |
| e-ISBN | 9781467304375 |
| DOI | 10.1109/WCNC.2012.6213989 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-04-01 |
| Publisher Place | France |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Interference Resource management Algorithm design and analysis Optimization Cognitive radio OFDM Noise multi-cell cognitive radio resource allocation OFDMA Lagrangian duality optimization fairness |
| Content Type | Text |
| Resource Type | Article |
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