학술논문

Sum rate–based relay selection strategy in FSO systems.
Document Type
Article
Source
International Journal of Communication Systems. Apr2018, Vol. 31 Issue 6, p1-1. 11p.
Subject
*FREE-space optical technology
*PARALLEL computers
*RADIO transmitter-receivers
*DISTRIBUTION (Probability theory)
*ATMOSPHERIC turbulence
Language
ISSN
1074-5351
Abstract
Summary: We present a relay selection strategy for bidirectional free‐space optical (FSO) communication systems. A parallel relayed FSO network consisting of multiple decode‐and‐forward protocol based two‐way relays (TWRs) is considered. Using the proposed relay selection strategy, one TWR is selected to establish an FSO communication link between two non‐line‐of‐sight FSO transceivers. As the two‐way communication process is characterized by achievable sum rate of the system, the relay selection strategy is designed such that the achievable sum rate is maximum. Considering a Gamma‐Gamma distributed optical channel with path loss and pointing errors, we present a mathematical framework for the proposed relay selection strategy. [ABSTRACT FROM AUTHOR]