Wireless infrared in-house communications: how to achieve very high bit rates

While use of a power efficient signaling scheme appears to be effective in compensating for inherent high path-loss associated with pure diffuse infrared links, it begins to lose its effectiveness as data rate is increased. At very high data rates, intersymbol interference (ISI) can result in a very...

Full description

Saved in:
Bibliographic Details
Main Authors: Akhavan, K., Kavehrad, M., Jivkova, S.
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Bit error rate
Bit rate
Intersymbol interference
Optical fiber communication
Optical transmitters
Pulse modulation
Radio transmitters
Robustness
Wireless communication
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:While use of a power efficient signaling scheme appears to be effective in compensating for inherent high path-loss associated with pure diffuse infrared links, it begins to lose its effectiveness as data rate is increased. At very high data rates, intersymbol interference (ISI) can result in a very high and sometimes irreducible power penalty, preventing the system from operating at a low bit-error probability. In this paper, we investigate a link design employing a multi-beam transmitter in conjunction with a narrow field-of-view (FOV) direction diversity receiver. The design goal is to eliminate the effect of ISI, so that power efficient signaling schemes such as pulse-position modulation (PPM) can be employed at very high data rates. It is shown that an average bit-error rate (BER) not exceeding 10/sup -9/ can be achieved within the link coverage area with more than 99% probability at bit rates up to a few hundreds of megabits per second, using transmitted power levels well below one Watt.
ISSN:1525-3511
1558-2612
DOI:10.1109/WCNC.2000.903939