Title :
Performance of heterodyne DM-DPSK systems with tight IF filtering
Author_Institution :
Telecommun. Res. Labs., Horsholm, Denmark
Abstract :
Results are reported from a new rigorous bit-error-rate analysis appropriate for heterodyne DM-DPSK systems influenced by receiver and phase noise. For a modulation index value of 2 the shot-noise-limited system sensitivity is only 0.9 dB from that of a DPSK system and the phase noise sensitivity is also close to the DPSK sensitivity.
Keywords :
information theory; modelling; optical communication; optical modulation; phase shift keying; BER analysis; DPSK sensitivity; direct modulated DPSK; heterodyne DM-DPSK systems; modulation index value of 2; phase noise; phase noise sensitivity; receiver noise; rigorous bit-error-rate analysis; shot-noise-limited system sensitivity; tight IF filtering;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920157
