LINK DESIGN FOR NONDIRECTED WIRELESS INFRARED COMMUNICATIONS
LINK DESIGN FOR NONDIRECTED WIRELESS INFRARED COMMUNICATIONS
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DOI：
10.1364/ao.34.003764
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发表时间：
1995-07-01
期刊：
影响因子：
1.9
通讯作者：
KAHN, JM
中科院分区：
文献类型：
--
作者：
BARRY, JR;KAHN, JM
我们优化了一个使用非定向视线红外辐射的近距离通信系统的设计。我们提出了一种由球形薄膜光学滤光片和截断球形透镜组成的接收器结构，其性能明显优于优化的平面滤光片系统。我们可以在不限制视场的情况下使用任意大的滤波器半径使球面滤波器的通带任意窄。我们认为，当使用球形滤波器时，截断角为90度可使接收器的视野最大化。我们共同优化了发射机的辐射方向图和接收机的光学元件。数值结果表明，269 mW的发射信号功率足以在半径4 m的高背景辐照度小区内达到100 Mbit/s的传输速率。
We optimize the design of a short-range communication system using nondirected line-of-sight IR radiation. We propose a receiver structure comprising a spherical thin-film optical filter and a truncated spherical lens that can significantly outperform an optimized planar-filter system. We can make the passband of the spherical filter arbitrarily narrow without constraining the field of view by using an arbitrarily large filter radius. We argue that a truncation angle of 90 degrees maximizes the receiver field of view when a spherical filter is used. We jointly optimize the transmitter radiation pattern and receiver optical components. Numerical results show that 269 mW of transmitted signal power is sufficient to achieve 100 Mbit/s throughout a 4-m radius cell with high background irradiance.