Title :
Enhancement of Optical Wireless Multi-Pulse PPM
Author :
Kozawa, Yusuke ; Habuchi, Hiromasa
Author_Institution :
Coll. of Eng., Ibaraki Univ., Hitachi
Abstract :
In this paper, optical wireless multi-pulse pulse position modulation (MPPM) system with modified pseudo orthogonal M-sequence sets is proposed. Moreover, the symbol error rates of the proposed system are analyzed by taking into account the scintillation, background-noise, avalanche photo- diode (APD) noise, thermal noise, and signal dependence noise in the single-user case. Consequently, the normalized throughput in consideration of SER of the proposed system is superior to that of the conventional MPPM systems. Furthermore, the normalized throughput of the proposed system can achieve about 1.25 [bit/chip].
Keywords :
avalanche photodiodes; noise; optical communication; pulse position modulation; radio networks; set theory; avalanche photodiode noise; optical wireless multipulse pulse position modulation; pseudo orthogonal M-sequence sets; signal dependence noise; thermal noise; Data communication; Optical modulation; Optical noise; Optical receivers; Optical refraction; Optical sensors; Optical transmitters; Optical variables control; Pulse modulation; Throughput;
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
Print_ISBN :
978-1-4244-2324-8
DOI :
10.1109/GLOCOM.2008.ECP.526
