Abstract
Free space optical (FSO) communications is a cost-effective and high bandwidth access technique, which has been receiving growing attention with recent commercialization successes. Spatial diversity, which involves the use of multiple laser transmitters/receivers, can be used over FSO links to mitigate turbulence-induced fading, resulting in error-rate-performance improvement In this paper, we investigate BER (bit error rate) performance of MEMO (multiple-input multiple-output) FSO links over lognormal atmospheric turbulence fading channels, assuming both independent and correlated channels among transmitter/receiver apertures. Our derivations clearly demonstrate the effect of diversity in a lognormal channel, which turns out to be much different from a Rayleigh fading channel, which is frequently used to model radio-frequency (RF) wireless fading channels.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3378-3382 |
| Number of pages | 5 |
| Journal | IEEE Vehicular Technology Conference |
| Volume | 60 |
| Issue number | 5 |
| State | Published - 2004 |
| Event | 2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security - Los Angeles, CA, United States Duration: Sep 26 2004 → Sep 29 2004 |
Keywords
- Atmospheric turbulence
- Bit error rate
- Free space optical communication
- Lognormal channel
- MIMO
ASJC Scopus subject areas
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics