Abstract
We study the error performance of an heterodyne differential phase-shift
keying (DPSK) optical wireless (OW) communication system operating under various
intensity fluctuations conditions. Specifically, it is assumed that the propagating
signal suffers from the combined effects of atmospheric turbulence-induced
fading, misalignment fading (i.e., pointing errors) and path-loss. Novel closed-form
expressions for the statistics of the random attenuation of the propagation
channel are derived and the bit-error rate (BER) performance is investigated
for all the above fading effects. Numerical results are provided to evaluate
the error performance of OW systems with the presence of atmospheric turbulence
and/or misalignment. Moreover, nonlinear optimization is also considered to
find the optimum beamwidth that achieves the minimum BER for a given signal-to-noise
ratio value.
© 2009 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription