Title :
Modeling of nondirected wireless infrared channels
Author :
Carruthers, Jeffrey B. ; Kahn, Joseph M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Boston Univ., MA, USA
fDate :
10/1/1997 12:00:00 AM
Abstract :
We show that realistic multipath infrared channels can be characterized well by only two parameters: optical path loss and RMS delay spread. Functional models for the impulse response, based on infrared reflection properties, are proposed and analyzed. Using the ceiling-bounce functional model, we develop a computationally efficient method to predict the path loss and multipath power requirement of diffuse links based on the locations of the transmitter and receiver within a room. Use of our model is a simple, yet accurate, alternative to the use of an ensemble of measured channel responses in evaluating the impact of multipath distortion
Keywords :
delays; multipath channels; optical communication; optical links; optical losses; optical noise; transient response; RMS delay spread; ceiling-bounce functional model; diffuse links; impulse response; indoor communication; infrared reflection properties; multipath distortion; multipath infrared channels; multipath power requirement; nondirected wireless infrared channels; optical path loss; room; High speed optical techniques; Infrared detectors; Intensity modulation; Optical distortion; Optical losses; Optical receivers; Optical transmitters; Photodetectors; Power system modeling; Predictive models;
Journal_Title :
Communications, IEEE Transactions on