A Novel Modified Digital Pulse Interval Modulation for Optical Wireless Communications

Author

Zhang, Tieying ; Xie, Chuanjun ; Kong, Ting ; Ma, Jie

Author_Institution

Dept. of teaching & Res., Naval Flight Acad., Huludao

fYear

2008

fDate

12-14 Oct. 2008

Firstpage

1

Lastpage

4

Abstract

A novel modified digital pulse interval modulation (MDPIM) is presented on the basis of pulse position modulation (PPM) which needs symbol synchronization and digital pulse interval modulation (DPIM) whose symbol length is not Modified. After introducing symbol structure, average transmit power and bandwidth efficiency are studied. Based on weak turbulence channel model, the slot error rate and packet error rate are derived, and compared with OOK, PPM and DPIM. Simulations show that error rate of MDPIM is inferior to PPM and DPIM, but obviously superior to OOK. Moreover, MDPIM, which needn´ t symbol synchronization and has fixed symbol length, can simplify the receiver and solve modulator waiting or buffer overflow in comparison with PPM and DPIM respectively. Hence, MDPIM is superior in wireless optical communications system.

Keywords

optical communication; pulse modulation; pulse position modulation; radiocommunication; DPIM; OOK; PPM; digital pulse interval modulation for optical wireless communications; modified digital pulse interval modulation; pulse position modulation; symbol synchronization and digital pulse intervai modufation; Bandwidth; Buffer overflow; Digital modulation; Error analysis; Optical buffering; Optical modulation; Optical pulses; Optical receivers; Pulse modulation; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on

Conference_Location

Dalian

Print_ISBN

978-1-4244-2107-7

Electronic_ISBN

978-1-4244-2108-4

Type

conf

DOI

10.1109/WiCom.2008.408

Filename

4678317