Title :
The performance enhancement of severely impaired unguided laser communication systems using turbo codes
Author :
Kiasaleh, Kamran
Author_Institution :
Texas Univ., Dallas, TX, USA
Abstract :
Parallel concatenated convolutionally coded (PCCC) optical binary pulse-position modulation (PPM) communication systems are introduced and investigated. It is assumed that the laser channel is an intensity modulated (IM) channel and that the received optical signal is detected using a shot-noise limited direct-detection (DD) scheme. With the aid of the best available upper bounds, the performance of rate 1/ n PCCC encoded optical PPM systems is assessed in terms of the upper bound on the system bit error rate (BER) for shot noise limited IM/DD channels. The numerical results demonstrate the enormous potential of this novel coding scheme in enhancing the performance of the aforementioned optical channel by a sizeable margin across the board
Keywords :
concatenated codes; convolutional codes; error statistics; laser noise; optical communication; optical links; optical modulation; pulse position modulation; shot noise; PPM; coding scheme; intensity modulated channel; laser channel; optical binary pulse-position modulation communication systems; optical channel; parallel concatenated convolutional coding; performance enhancement; received optical signal; severely impaired unguided laser communication systems; shot noise limited IM/DD channels; shot-noise limited direct-detection scheme; system bit error rate; turbo codes; upper bounds; Bit error rate; Concatenated codes; Convolution; Convolutional codes; Modulation coding; Optical modulation; Optical noise; Optical pulses; Pulse modulation; Upper bound;
Conference_Titel :
MILCOM 97 Proceedings
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4249-6
DOI :
10.1109/MILCOM.1997.648656
