Abstract
In this paper, we characterize the low signal-to-noise ratio (SNR) capacity of wireless links undergoing the log-normal turbulence when the channel state information (CSI) is perfectly known at both the transmitter and the receiver. We derive a closed form asymptotic expression of the capacity and we show that it scales essentially as λ SNR where λ is the water-filling level satisfying the power constraint. An asymptotically closed-form expression of λ is also provided. Using this framework, we also propose an on-off power control scheme which is capacity-achieving in the low SNR regime.
Original language | English |
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Title of host publication | 3rd International Workshop in Optical Wireless Communications (IWOW) |
Publisher | IEEE |
Pages | 25-29 |
Number of pages | 5 |
ISBN (Electronic) | 978-1-4799-6676-9 |
DOIs | |
Publication status | Published - 10 Nov 2014 |
Externally published | Yes |
Event | 3rd International Workshop in Optical Wireless Communications (IWOW) - Funchal, Portugal Duration: 17 Sep 2014 → 17 Sep 2014 |
Conference
Conference | 3rd International Workshop in Optical Wireless Communications (IWOW) |
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Country/Territory | Portugal |
City | Funchal |
Period | 17/09/14 → 17/09/14 |
Keywords
- Signal to noise ratio
- Integrated optics
- Tin
- Reactive power