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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Khoshkholgh, M.G. Navaie, K. Yanikomeroglu, H. |
| Copyright Year | 2002 |
| Abstract | In this paper, we analyze the achievable capacity of the secondary service for overlay and underlay access strategies. We then propose a novel mixed access strategy in which in contrast to the underlay strategy, the secondary service transmits during the idle periods without considering the interference threshold constraint. In contrast to the overlay strategy, mixed strategy makes transmission during the busy periods with a probability p_a subject to satisfying the interference threshold constraint. Parameter p_a is a secondary service parameter, which can be adjusted based on the spectrum status. Moreover, we show that the secondary service can adjust p_a to select appropriate access strategy with the objective of maximizing the achieved capacity based on the interference at the secondary service receiver, I, imposed by the primary service transmitter. The proposed spectrum-sharing technique developed in this paper based on I significantly reduces the system complexity comparing to the system in which for spectrum sharing, the imposed interference at the primary receiver is required. We further suggest a simple power allocation scheme for the mixed strategy that its achieved capacity is very close to the maximum achievable capacity of the secondary service. |
| Sponsorship | IEEE Computer Society |
| Starting Page | 1780 |
| Ending Page | 1793 |
| Page Count | 14 |
| File Size | 1326831 |
| File Format | |
| ISSN | 15361233 |
| Volume Number | 9 |
| Issue Number | 12 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-12-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Fading Interference constraints AWGN Transmitters White spaces FCC Radio spectrum management Temperature Technological innovation Laboratories underlay strategy. Achievable capacity dynamic spectrum access interference threshold overlay strategy spectrum sharing |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Networks and Communications Electrical and Electronic Engineering Software |
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