Title :
Impulse noise identification for the HFC upstream channel
Author :
Li, Kuo-Hui ; Huang, Arden ; Ingram, Mary Ann ; Howard, Daniel
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
9/1/1998 12:00:00 AM
Abstract :
An algorithm is described that identifies the shape of the impulse within the impulse noise component of the HFC upstream channel. The cross-correlation function (CCF) is used to align samples of the impulse waveforms in time. The singular value decomposition (SVD) finds the dominant basis waveforms that represent the collection of samples. We find that two frequency-modulated basis waveforms sufficiently span our set of 75 measured impulses. The joint statistics of the basis coefficients are given
Keywords :
cable television; correlation methods; frequency modulation; shot noise; signal sampling; singular value decomposition; subscriber loops; telecommunication channels; television interference; HFC upstream channel; SVD; algorithm; basis coefficients; cable TV; cross-correlation function; dominant basis waveforms; frequency-modulated basis waveforms; hybrid fibre coax network; impulse noise identification; impulse waveforms; interference; joint statistics; measured impulses; samples alignment; shot noise model; singular value decomposition; Additive white noise; Cable TV; Communication cables; Finite impulse response filter; Gaussian noise; Hybrid fiber coaxial cables; Noise shaping; Radio broadcasting; Radio frequency; Radiofrequency interference;
Journal_Title :
Broadcasting, IEEE Transactions on
