Title :
On the capacity of indoor optical wireless communications
Author :
Sethakaset, Ubolthip ; Gulliver, T. Aaron
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC
fDate :
7/1/2006 12:00:00 AM
Abstract :
In this letter, the capacity of an optical wireless communications system in an indoor environment is investigated. We consider various modulation schemes, e.g. pulse-position modulation (L-PPM), differential pulse-position modulation (L-DPPM) and differential amplitude pulse-position modulation (AtimesL-DAPPM). It is shown that L-DPPM provides twice the channel capacity of L-PPM. Moreover, Atimes L-DAPPM has a higher capacity than L-DPPM. The capacity of PPM is degraded more by multipath dispersion than that of DPPM and DAPPM.
Keywords :
channel capacity; indoor communication; optical communication; optical modulation; pulse position modulation; L-DAPPM; L-DPPM; L-PPM; channel capacity; differential pulse position modulation; indoor optical wireless communication; AWGN; Amplitude modulation; Intersymbol interference; Optical filters; Optical modulation; Optical pulses; Optical receivers; Optical transmitters; Pulse modulation; Wireless communication;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOM.2006.224417
