Title :
Rigorous assessment of intersymbol interference impact on the performance of optically preamplified receivers
Author :
Correia, João M B ; Cartaxo, Adolfo V T
Author_Institution :
Inst. de Telecomunicacoes, Inst. Superior Tecnico, Lisbon, Portugal
Abstract :
Intersymbol interference (ISI) may be a major impairment of optical fiber communication systems. In this contribution we extend the formulation presented previously, taking into account the different shape of each pulse in the received signal. This leads to a significant difference of ISI magnitude in comparison with the previous method. We conclude that methods of computing the BER using the same pulse shape for all bits are only accurate when the pulse superposition principle is valid. In most optical communication systems this principle is not valid and leads to significant discrepancies of BER and receiver sensitivity.
Keywords :
error statistics; intersymbol interference; optical fibre communication; optical receivers; preamplifiers; BER; ISI; bit error rate; intersymbol interference; optical fiber communication systems; optically preamplified receivers; pulse shape; pulse superposition principle; received signal; receiver sensitivity; Bit error rate; Intersymbol interference; Noise shaping; Optical filters; Optical pulse shaping; Optical receivers; Preamplifiers; Pulse amplifiers; Pulse shaping methods; Shape;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1996. LEOS 96., IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-3160-5
DOI :
10.1109/LEOS.1996.571648