Abstract
Error rate performance of subcarrier intensity modulations is analyzed
for optical wireless communications over strong atmospheric turbulence channels.
We study the error rate of a subcarrier intensity modulated optical wireless
communication system employing <i>M</i>-ary phase-shift keying, differential phase-shift keying, and noncoherent
frequency-shift keying. Both <i>K</i>-distributed turbulence channel (strong) and negative exponential
turbulence channel (saturated) are considered. Closed-form error rate expressions
are derived using a series expansion of the modified Bessel function. Furthermore,
the outage probability expressions are obtained for subcarrier intensity modulated
optical wireless communication systems over the <i>K</i>-distributed turbulence and the negative
exponential channels. Asymptotic error rate analysis and truncation error
analysis are also presented. Our asymptotic analysis shows that differential
phase-shift keying suffers a constant signal-to-noise ratio performance loss
of 3.92 dB with respect to binary phase-shift keying under strong atmospheric
turbulence conditions. The numerical results demonstrate that our series solutions
are efficient and highly accurate.
© 2012 USGov
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