Rfs. Ribeiro et Jrf. Darocha, COMPUTATIONALLY EFFICIENT METHODS FOR BIT-ERROR RATE EVALUATION IN WEAKLY COHERENT OPTICAL-SYSTEM, Journal of lightwave technology, 12(10), 1994, pp. 1842-1848
A semianalytical method to estimate the bit-error rate performance of
nonsynchronous ASK and FSK optical heterodyne systems is presented. Th
is approach takes into account numerous system details with an accurac
y similar to Monte-Carlo simulation, but with a computation time reduc
ed by several orders of magnitude. An analytical approximation, based
on a closed-form expression for the decision variable moment generatin
g function, is also presented. The results obtained with the semianaly
tical method and the analytical approximation are compared to Monte-Ca
rlo simulation results and to measurements obtained on a practical FSK
system.