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Measurements and models of radio frequency impulsive noise for indoor wireless communications

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3 Author(s)
Blackard, K.L. ; Federal Bur. of Investigation, Quantico, VA, USA ; Rappaport, T.S. ; Bostian, C.W.

The authors present the results of average and impulsive noise measurements inside several office buildings and retail stores. The noise measurement system operated at 918 MHz, 2.44 GHz, and 4 GHz with a nominal 40-MHz, 3-dB RF bandwidth. Omnidirectional and directional antennas were used to investigate the characteristics and sources of RF noise in indoor channels. Statistical analyses of the measurements are presented in the form of peak amplitude probability distributions, pulse duration distributions, and interarrival time distributions. Simple first-order mathematical models for these statistical characterizations are also presented. These analyses indicate that photocopiers, printers (both line printers and cash register receipt printers), elevators, and microwave ovens are significant sources of impulse noise in office and retail environments

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Selected Areas in Communications, IEEE Journal on  (Volume:11 ,  Issue: 7 )