Title :
Performance limitation of M-ary pulse position modulation and on-off keying in a direct detection optical wireless communication system
Author :
Amin, T.M. ; Majumder, S.P.
Author_Institution :
Bangladesh Univ. of Eng. & Technol./EEE, Dhaka
Abstract :
Performance analysis is carried out for an optical wireless link in the presence of atmospheric scintillation using OOK and M-ary PPM modulation schemes. The bit error rate (BER) performance results evaluated at a bit rate of 1 Gbps show that system suffers significant penalty in required photon count per bit to achieve a given BER due to atmospheric scintillation effect. It is noticed that penalty is approximately 128.2, 186.7, 215 and 356.6 photons per bit corresponding to OPPM, QPPM, OOK and BPPM respectively at a scintillation variance of 0.01.
Keywords :
amplitude shift keying; optical links; pulse position modulation; radio links; M-ary pulse position modulation; atmospheric scintillation; direct detection optical wireless communication system; on-off keying; optical wireless link; performance analysis; performance limitation; Optical crosstalk; Optical detectors; Optical modulation; Optical noise; Optical pulses; Optical receivers; Optical scattering; Performance analysis; Pulse modulation; Wireless communication;
Conference_Titel :
Computer and information technology, 2007. iccit 2007. 10th international conference on
Conference_Location :
Dhaka
Print_ISBN :
978-1-4244-1550-2
Electronic_ISBN :
978-1-4244-1551-9
DOI :
10.1109/ICCITECHN.2007.4579442
