Multirate RZ communications for dispersive wireless optical channels

Belal Hamzeh; Mohsen Kavehrad

doi:10.1117/12.663964

12 May 2006 Multirate RZ communications for dispersive wireless optical channels

Belal Hamzeh, Mohsen Kavehrad

Proceedings Volume 6248, Wireless Sensing and Processing; 62480A (2006) https://doi.org/10.1117/12.663964
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

Abstract

Free Space Optical Communications through cloud-obscured channels suffer from severe degradations due to multiscattering, which induces delay spread in the received signal. The delay spread of FSO channel can vary considerably according to channel conditions, varying from nanoseconds to microseconds for clear and cloudy channel, respectively. In this paper, we present the use of return-to-zero (RZ) modulation in conjunction with multirate modulation schemes as viable means for minimizing the dispersive effects of the channels. We show that multirate communications provide diversity against channel degradation and fluctuation, while RZ modulation is more robust to dispersive channels than non return-to-zero (NRZ) modulation, thus providing an overall improvement in system performance, reliability and availability.

Citation Download Citation

Belal Hamzeh and Mohsen Kavehrad "Multirate RZ communications for dispersive wireless optical channels", Proc. SPIE 6248, Wireless Sensing and Processing, 62480A (12 May 2006); https://doi.org/10.1117/12.663964

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available