Multi-spot diffusing configuration for wireless infrared access; Joint optimization of multi-beam transmitter and angle diversity receiver

S. Jivkova, M. Kavehrad

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Multi-Spot Diffusing Configuration combines a multi-beam transmitter and an angle diversity receiver. One of the main system design issues is the joint optimization of the transmitter and the receiver. Such factors as signal power distribution, received ambient light, eye-safety regulations, receiver complexity, etc., should be taken into account when determining the design parameters. For a bit rate of 100 MB/s in the presence of intense ambient light, the utilization of an array of 10×10 diffusing spots and a seven-branch receiver with a total FOV of 34.4.deg, insures signal-to-shot-noise ratio as high as 23.4 dB when the best branch is selected and 26.5 dB when maximal-ratio combining is employed. Furthermore, no shadowing of the receiver occurs when a person crosses the line between the transmitter and the receiver.

Original languageEnglish (US)
Pages (from-to)72-77
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3850
StatePublished - 1999

Fingerprint

Transmitter
transmitters
Transmitters
Infrared
Receiver
receivers
Infrared radiation
Angle
Configuration
optimization
Optimization
configurations
Shot noise
transmitter receivers
Branch
Systems analysis
Maximal Ratio Combining
Shot Noise
Power Distribution
Shadowing

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

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AB - Multi-Spot Diffusing Configuration combines a multi-beam transmitter and an angle diversity receiver. One of the main system design issues is the joint optimization of the transmitter and the receiver. Such factors as signal power distribution, received ambient light, eye-safety regulations, receiver complexity, etc., should be taken into account when determining the design parameters. For a bit rate of 100 MB/s in the presence of intense ambient light, the utilization of an array of 10×10 diffusing spots and a seven-branch receiver with a total FOV of 34.4.deg, insures signal-to-shot-noise ratio as high as 23.4 dB when the best branch is selected and 26.5 dB when maximal-ratio combining is employed. Furthermore, no shadowing of the receiver occurs when a person crosses the line between the transmitter and the receiver.

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