Title :
Spectral characteristics of multilevel digital pulse interval modulation in optical wireless communication
Author :
Wei, Wei ; Xiaohui, Zhang ; Jionghui, Rao
Author_Institution :
Dept. of Weaponry Eng., Naval Univ. of Eng., Wuhan, China
Abstract :
To investigate spectral characteristics of multilevel digital pulse interval modulation (MDPIM) signal, a detailed derivation of it´s power spectral density is presented. This mathematical model showed that the spectral profile contains a DC component, nulls at even multiples of the slot frequency, and a distinct slot component with its harmonics, which offers a simpler implementation with slot-synchronization. The DC component of MDPIM does not approach zero, so it is susceptible to the effects of baseline wander, but for certain bit resolution, a desirable DC level is achievable. The presented work offers considerations when designing pre-filter, synchronizer, and equalizer in receiver.
Keywords :
mathematical analysis; optical communication; pulse modulation; radiocommunication; equalizer; mathematical model; multilevel digital pulse interval modulation; optical wireless communication; power spectral density; pre-filter; receiver; slot-synchronization; synchronizer; Integrated optics; Optical modulation; Optical receivers; Optical signal processing; Synchronization; Wireless communication; DC component; Multilevel Digital Pulse Interval Modulation(MDPIM); optical wireless communication; power spectral density(PSD); slot component; spectral analysis; spectral characteristics;
Conference_Titel :
Signal Processing Systems (ICSPS), 2010 2nd International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-6892-8
Electronic_ISBN :
978-1-4244-6893-5
DOI :
10.1109/ICSPS.2010.5555775
