TY - GEN
T1 - Channel modeling in wireless optical communications using Markov chains
AU - Hajjarian, Zeinab
AU - Kavehrad, Mohsen
PY - 2008/9/22
Y1 - 2008/9/22
N2 - Wireless optical communications is an attractive solution for the so-called "last-mile" problem due to the ever-increasing demand for highspeed communications, and the difficulty of installing cable and optical fiber. In the presence of atmospheric phenomena such as cloud, fog, and turbulence the wireless optical communications channel happens to be time varying and dispersive, required to be accurately modeled. In most of the previous works, Monte-Carlo Ray Tracing (MCRT) algorithm has been used to measure channel parameters, though this algorithm needs a high computational capacity and a long execution time. We show that by modeling the photon trajectory in space by a Markov chain, angular dispersion can be calculated via matrix multiplications. We show that Markov chain model produces values that are close to MCRT algorithm results.
AB - Wireless optical communications is an attractive solution for the so-called "last-mile" problem due to the ever-increasing demand for highspeed communications, and the difficulty of installing cable and optical fiber. In the presence of atmospheric phenomena such as cloud, fog, and turbulence the wireless optical communications channel happens to be time varying and dispersive, required to be accurately modeled. In most of the previous works, Monte-Carlo Ray Tracing (MCRT) algorithm has been used to measure channel parameters, though this algorithm needs a high computational capacity and a long execution time. We show that by modeling the photon trajectory in space by a Markov chain, angular dispersion can be calculated via matrix multiplications. We show that Markov chain model produces values that are close to MCRT algorithm results.
UR - http://www.scopus.com/inward/record.url?scp=51849118914&partnerID=8YFLogxK
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U2 - 10.1109/CCECE.2008.4564906
DO - 10.1109/CCECE.2008.4564906
M3 - Conference contribution
AN - SCOPUS:51849118914
SN - 9781424416431
T3 - Canadian Conference on Electrical and Computer Engineering
SP - 2051
EP - 2055
BT - IEEE Canadian Conference on Electrical and Computer Engineering, Proceedings, CCECE 2008
T2 - IEEE Canadian Conference on Electrical and Computer Engineering, CCECE 2008
Y2 - 4 May 2008 through 7 May 2008
ER -