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| Content Provider | IET Digital Library |
|---|---|
| Author | Fredj, Kaïs Ben Aïssa, Sonia Musavian, Leila |
| Abstract | This study investigates the capacity of multiple relay channels in different fading and shadowing environments under spectrum-sharing constraints. The authors consider that a secondary user (SU) is allowed to share the spectrum band with a primary user (PU) provided that the SU's transmit power remains below an interference power threshold set by the PU. Considering a scenario where the SU's transmitter and receiver cannot communicate directly, a relay node, chosen among a set of K terminals, helps transmitting data from the SU's transmitter to the destination. The SU's transmitter and chosen relay node adapt their corresponding transmission parameters so as to satisfy the interference-power constraint at the PU's receiver. The authors derive closed-form expressions for the ergodic capacity of the SU's channel in Rayleigh fading, Nakagami-m fading and lognormal shadowing environments. They further obtain the outage capacity assuming the aforementioned environments and the above-mentioned spectrum-sharing limitations. Numerical results are provided to reinforce our theoretical derivations. |
| Starting Page | 98 |
| Ending Page | 109 |
| Page Count | 12 |
| ISSN | 17518628 |
| Volume Number | 7 |
| e-ISSN | 17518636 |
| Issue Number | Issue 2, Jan (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/7/2 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2011.0006 |
| Journal | IET Communications |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Ergodic Capacity Fading Environments Interference-power Constraint Lognormal Shadowing Environments Nakagami Channel Nakagami-m Fading Channel Outage Capacity Primary User PU Receiver Radio Link And Equipment Radio Receiver Radio Transmitters Rayleigh Channel Rayleigh Fading Channel Relay Network Relay Node Relaying Channel Secondary User Shadowing Environments Spectrum-sharing Constrained System SU Transmitter Telecommunication |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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