Title :
Maximum-likelihood symbol synchronization and detection of OPPM sequences
Author :
Patarasen, S. ; Georghiades, Costas N.
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX
fDate :
6/1/1994 12:00:00 AM
Abstract :
For an optical Poisson channel, we consider the problem of symbol synchronization and detection of chip-synchronized, random overlapping pulse-position modulation (OPPM) sequences. Maximum-likelihood algorithms are derived for both synchronization and detection and for soft and hard data, and their performances are evaluated through simulations and an upper bound on the symbol detection and symbol synchronization probabilities. As for the case of pulse-position modulation previously studied, it is seen that a performance ceiling exists when only chip synchronization is present, which can be removed through the periodic insertion of synchronizable symbols in the random data stream
Keywords :
maximum likelihood estimation; optical modulation; pulse position modulation; signal detection; stochastic processes; synchronisation; telecommunication channels; OPPM sequence; chip-synchronized sequences; hard data; maximum-likelihood algorithms; maximum-likelihood symbol detection; maximum-likelihood symbol synchronization; optical Poisson channel; pulse-position modulation; random data stream; random overlapping sequences; simulations; soft data; symbol detection probability; symbol synchronization probability; upper bound; Communications Society; Maximum likelihood detection; Optical fiber communication; Optical modulation; Optical pulses; Performance evaluation; Pulse modulation; Senior members; Throughput; Upper bound;
Journal_Title :
Communications, IEEE Transactions on
