TY - GEN
T1 - An adaptive modulation scheme for coded free-space optical systems
AU - Hariq, Sayed Hasan
AU - Odabasioglu, Niyazi
AU - Uysal, Murat
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/12/23
Y1 - 2014/12/23
N2 - For very slowly-varying fading channels as in the case of atmospheric turbulence-induced fading, it is possible to reliably estimate the channel state information and send it back to the transmitter. The transmitter can use this information to vary the transmission parameters such as power, modulation size, code rate etc according to the channel conditions. This is known as link adaptation. In this paper, we consider a turbo-coded free-space optical (FSO) system with M-Ary pulse position modulation over log-normal turbulence channels and propose an adaptive modulation scheme under peak power constraints. Our simulation results demonstrate significant performance improvements of the proposed adaptive scheme over non-Adaptive counterparts.
AB - For very slowly-varying fading channels as in the case of atmospheric turbulence-induced fading, it is possible to reliably estimate the channel state information and send it back to the transmitter. The transmitter can use this information to vary the transmission parameters such as power, modulation size, code rate etc according to the channel conditions. This is known as link adaptation. In this paper, we consider a turbo-coded free-space optical (FSO) system with M-Ary pulse position modulation over log-normal turbulence channels and propose an adaptive modulation scheme under peak power constraints. Our simulation results demonstrate significant performance improvements of the proposed adaptive scheme over non-Adaptive counterparts.
KW - Free-space optical communications
KW - adaptive transmission
KW - lognormal fading channel
KW - turbo codes
UR - http://www.scopus.com/inward/record.url?scp=84921390349&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84921390349&partnerID=8YFLogxK
U2 - 10.1109/NOC.2014.6996841
DO - 10.1109/NOC.2014.6996841
M3 - Conference contribution
AN - SCOPUS:84921390349
T3 - 2014 19th European Conference on Networks and Optical Communications, NOC 2014
SP - 132
EP - 135
BT - 2014 19th European Conference on Networks and Optical Communications, NOC 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 19th European Conference on Networks and Optical Communications, NOC 2014
Y2 - 4 June 2014 through 6 June 2014
ER -