Title :
Band-limitation effect on statistical properties of class-A interference
Author :
Matsumoto, Yasushi ; Gotoh, Kaoru ; Wiklundh, Kia
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Tokyo
Abstract :
The effect of band limitation on the statistical properties of Middleton´s class A noise model is investigated. It is found that a uniformly weighted sum of statistically independent and identically distributed class A random variables becomes a new class A random variable with reduced impulsiveness. It is also found that bandlimited noise becomes class A noise if the impulse response of the filter has a rectangular envelope waveform. Since matched filters employed by DS-SS (direct sequence spread spectrum) or OFDM (orthogonal frequency division multiplex) systems usually satisfy the above condition, the results can be widely applied to the evaluation of the error probability of signal detection in such communication systems subjected to class A interference.
Keywords :
OFDM modulation; error statistics; matched filters; radiofrequency interference; signal detection; spread spectrum communication; Middleton class A noise model; OFDM system; band-limitation effect; class-A interference; direct sequence spread spectrum; error probability; identically distributed class A random variables; impulse response; matched filters; orthogonal frequency division multiplex; rectangular envelope waveform; signal detection; statistical properties; Bandwidth; Digital filters; Information filtering; Information filters; Interference; Matched filters; Noise level; Noise reduction; Pulse modulation; Spread spectrum communication; amplitude probability distribution; class A; electromagnetic interference; nongaussian noise;
Conference_Titel :
Electromagnetic Compatibility - EMC Europe, 2008 International Symposium on
Conference_Location :
Hamburg
Print_ISBN :
978-1-4244-2737-6
Electronic_ISBN :
978-1-4244-2737-6
DOI :
10.1109/EMCEUROPE.2008.4786795
