50-MB/S DIFFUSE INFRARED FREE-SPACE LINK USING ON-OFF KEYING WITH DECISION-FEEDBACK EQUALIZATION

被引：32

作者：

MARSH, GW

KHAN, JM

机构：

[1] Department of Electrical Engineering and Computer Sciences, University of California, Berkeley

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 1994年 / 6卷 / 10期

关键词：

D O I：

10.1109/68.329659

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report an experimental 50-Mb/s free-space infrared link for indoor wireless communication, which achieves low bit-error rates (BERs) in the presence of multipath distortion, shadowing, and ambient natural and artificial lighting. The eye-safe 806 nm transmitter, directed at the ceiling, emits an on-off-keyed signal having 475-mW average power. The receiver employs a 1-cm2 silicon p-i-n photodiode coupled to a high-index hemispherical concentrator, which is covered by an optical band-pass filter of 30-nm bandwidth. A decision-feedback equalizer mitigates the effect of multipath ISI. In the presence of bright skylight, the link achieves a range of 2.9 m at 10(-7) BER.

引用

页码：1268 / 1270

页数：3

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