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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Pin-Hsun Lin Chung-Pi Lee Shih-Chun Lin Hsuan-Jung Su |
| Copyright Year | 2008 |
| Description | Author affiliation: Dept. of Electr. Eng. & Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei (Pin-Hsun Lin; Chung-Pi Lee; Shih-Chun Lin; Hsuan-Jung Su) |
| Abstract | Cognitive radio (CR) has been proposed as an efficient method to reuse the licensed spectrum. It recognizes the primary (licensed) users' signals and adapts its own to minimize the interference it generates. When perfect channel state information is known at the transmitters, the capacity of CR system can be achieved by utilizing the dirty paper coding (DPC). In this paper, we consider the performance of the CR system under slow fading channels with only channel statistics known at the transmitters. Due to the limited channel state information, the original DPC fails and is replaced by the so- called linear-assignment Gel'fand-Pinsker coding. By carefully designing the parameters based on this precoding, this system has significant rate gains over naively treating primary users' signals as interference for slow fading scenarios. A nested-lattice based coding/decoding scheme is also proposed to implement this precoding in practice, and it validates our theoretical claims. |
| Starting Page | 219 |
| Ending Page | 224 |
| File Size | 805607 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781424422463 |
| DOI | 10.1109/CISS.2008.4558524 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-03-19 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Fading Radio transmitters Interference Chromium Signal generators Decoding Cognitive radio Statistics Channel state information Signal design |
| Content Type | Text |
| Resource Type | Article |
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