Title :
A linear equalizer for high-speed APD-Based integrate-and-dump receivers
Author :
Peng Sun ; Hayat, Majeed M.
Author_Institution :
Dept. of Electr. & Comput. Eng., New Mexico Univ., Albuquerque, NM, USA
Abstract :
A linear minimum mean-square error (LMMSE) equalizer for avalanche-photodiode (APD) based integrate-and-dump receivers is designed to compensate for intersymbol-interference (ISI) introduced by the APD´s random impulse response. Recent work on the characterization of the joint probability distribution of the APD´s gain and buildup-time are adopted and utilized to determine the mean and correlation matrix of the APD-based receiver´s random impulse response. This LMMSE equalizer is shown to improve the bit-error-rate dramatically at high transmission rates, resulting in an improvement in the receiver sensitivity by approximately 2.3 dB at 15 GHz.
Keywords :
avalanche photodiodes; equalisers; error statistics; intersymbol interference; least mean squares methods; matrix algebra; optical correlation; optical receivers; probability; transient response; 15 GHz; ISI; LMMSE equalizer; avalanche-photodiode; bit-error-rate; correlation matrix; high-speed APD; integrate-and-dump receiver; intersymbol-interference; joint probability distribution; linear minimum mean-square error; random impulse response; Delay; Equalizers; Erbium-doped fiber amplifier; High speed optical techniques; Intersymbol interference; Optical receivers; Photodiodes; Statistics; Stimulated emission; Sun;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2005.1576593
