DEMODULATION OF SUBBANDS FOR OFDM-BASED COMMUNICATION SYSTEMS

摘要

FIELD: radio-engineering. ^ SUBSTANCE: invention refers to communication systems. Method involves the steps at which: there performed is Fourier transformation of sequence of input readings for receiving the common pilot symbols for the first group of subbands; there obtained is the first group of channel enhancement evaluations for the first group of subbands based on common pilot symbols; there performed is quick inverse Fourier transformation (IFFT) of the first group of channel enhancement evaluations for receiving the sequence of channel enhancement values in time domain; there reversed is channel enhancement sequence in time domain for receiving the first sequence of reversed channel enhancement values for the second group of subbands; and there performed is quick Fourier transformation (FFT) of the first sequence of inversed channel enhancement values for obtaining the second group of channel enhancement evaluations for the second group of subbands. ^ EFFECT: improving demodulation efficiency. ^ 18 cl, 10 dwg