Side konspekt 2020 / eksami kordamisküsimused
signals are combined via band pass filters and splitters
48. Mida näitab mürategur (Noise Figure)
Noise Figure is noise factor described in logarithmic units (dB)
This is the most important figure on the uplink of any DAS
Noise factor - Noise Factor is defined as the input signal-tonoise ratio divided by
the output signal-tonoise ration - The amount of noise introduced by the active
system/device
49. Milleks kasutatakse kanalikodeerimist?
Channel coding enables the receiver to detect and correct errors, if they occur
during transmission due to noise, interference and fading.
50. Mis on genereeriv maatriks ja paarsuskontrolli maatriks?
Genereeriv maatriks – In coding theory, a generator matrix is a matrix whose
rows form a basis for a linear code. The codewords are all of the linear
combinations of the rows of this matrix, that is, the linear code is the row space of
its generator matrix.
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