18 October 2001 Design and implementation of receiver system for a wireless infrared communication link
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Proceedings Volume 4586, Wireless and Mobile Communications; (2001) https://doi.org/10.1117/12.445247
Event: Asia-Pacific Optical and Wireless Communications Conference and Exhibit, 2001, Beijing, China
This paper reports on the design considerations and implementations of construction of a receiver system for an infrared communication link using Light-Emitting-Diodes (LEDs). System configuration is non-directed line of sight (LOS) with single element receiver. The speed of the system constructed is 20 MHz (40 Mbps for on-off keying). In our design, the receiver consists of a multi-channel photo-detector array followed by multi-channels transimpedance amplifiers, a summer circuit for combining signals, low-pass filters(LPF) and high pass filters(HPF), and auto-gain control unit(AGC). The spectral match between photodiode and LED, looking angle of photodiode, rise time consideration of the photodiode, trade-off between transit rise time and photodiode effective area, etc, are also be discussed . A receiver module of speed response up to 20 MHz has been successfully constructed and the system is capable of receiving optical signal at a height of 2 m from the ceiling with coverage of a cell of 4 m in diameter.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lijun Jiang, Lijun Jiang, New Wei Lee, New Wei Lee, Ronda Venkateswarlu, Ronda Venkateswarlu, "Design and implementation of receiver system for a wireless infrared communication link", Proc. SPIE 4586, Wireless and Mobile Communications, (18 October 2001); doi: 10.1117/12.445247; https://doi.org/10.1117/12.445247

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