Title :
Simplifying the error probability analysis in optical direct detection DPSK systems
Author :
Pires, João J O ; Cancela, Luís G C
Author_Institution :
Dept. of Electr. & Comput. Eng., Inst. de Telecomun. & Inst. Super. Tecnico, Lisbon
fDate :
6/1/2009 12:00:00 AM
Abstract :
This letter describes a rigorous formulation based on an eigenfunction expansion technique to estimate the performance of optical direct detection DSPK systems and discusses appropriate procedures to simplify the process without solving any eigenvalue problem. A great emphasis is put on an approach derived from the wide-band optical filtering assumption. The results show that this simplification is acceptable for ideal receivers with time-bandwidth products far larger than 1, but it is clearly inadequate for more realistic receivers.
Keywords :
differential phase shift keying; eigenvalues and eigenfunctions; error statistics; optical communication; optical filters; optical modulation; differential phase shift keying; eigenfunction expansion technique; error probability analysis; optical direct detection DPSK systems; wideband optical filtering assumption; Differential quadrature phase shift keying; Eigenvalues and eigenfunctions; Error analysis; Error probability; Integral equations; Optical detectors; Optical filters; Optical interferometry; Optical noise; Optical receivers; Differential phase-shift keying (DPSK), optical communications, eigenvalue and eigenfunction expansion, wide-band assumption;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2009.090109
