Resumo

CORTES CORTES, Claudia Lucía  e  GUERRERO GONZALEZ, Neil. Characterization of the In-Phase Response and Phase Compensation in Multicarrier Systems for Channels with Non-Uniform Frequent. Rev. ing. univ. Medellín [online]. 2020, vol.19, n.36, pp.167-185.  Epub 31-Ago-2021. ISSN 1692-3324.  https://doi.org/10.22395/rium.v19n36a8.

This work proposes a methodology for the phase estimation in sub-bands of a non-uniform response channel. The novelty of this proposal lies in the use of a modulation format in QSPK (Quadrature Phase Shift Keying) quadrature-phase modified as a test signal for the phase estimation that eliminates the ambiguity issue. The methodology here proposed is verified experimentally using a defective RF cable as transmission channel and thus achieving data transmission rates of 20 Kbaud in a 120 cm distance in a frequency band between the 50 kHz y 276 kHz.

Palavras-chave : multicarrier modulation; non-uniform frequency response; phase response; Nyquist - FDM; unconventional QPSK.

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