Title :
Performance analysis of T-PPM over PPM for infrared wireless links
Author :
Arora, Ritika ; Kaur, Gurjit ; Gupta, Neena
Author_Institution :
Punjab Eng. Coll., Chandigarh, India
Abstract :
Current designs for deep-space optical communication systems utilize M-ary pulse position modulation for direct-detection photon communications over unguided channels. The analysis of a trellis-based pulse position modulation (T-PPM) scheme for photon communications with non-rectangular pulses is presented. The scheme includes the use of a set-partitioning methodology to increase the minimum distance using a simple convolutional encoder. It has been shown that T-PPM reduces performance losses due to reduced peak intensity during the detection process.
Keywords :
convolutional codes; optical communication; optical links; optical signal detection; pulse position modulation; set theory; space communication links; M-ary pulse position modulation; convolutional encoder; deep-space optical communication systems; direct-detection photon communications; infrared wireless links; nonrectangular pulses; photon communications; set-partitioning methodology; trellis-based PPM; trellis-based pulse position modulation; Background noise; Laser noise; Optical fiber communication; Optical losses; Optical modulation; Optical pulse shaping; Optical pulses; Performance analysis; Power lasers; Pulse modulation;
Conference_Titel :
Transparent Optical Networks, 2004. Proceedings of 2004 6th International Conference on
Print_ISBN :
0-7803-8343-5
DOI :
10.1109/ICTON.2004.1361959
