Spatial Selection-Based Intelligent N-OFDM Signal Processing in Wireless Communication Systems
DOI:
https://doi.org/10.47839/ijc.23.1.3433Keywords:
digital antenna array, lower bound of Cramer-Rao, block matrix, directional chart, OFDM (N-OFDM) signalsAbstract
The method of joint processing of pulses and OFDM (N-OFDM) signals is proposed. The corresponding analytical relations for the lower Cramer-Rao boundary on the dispersion of OFDM (N-OFDM) signals amplitude ratings in the presence of sources of pulsed radiation are obtained. Using mathematical modeling properties and limitations of the demodulation method of OFDM (N-OFDM) signals in the background of impulse signals in the integrated radar and telecommunication systems are established. It is determined that the use of the angular distance between the pulsed and OFDM signals sources at a value that is not less than 0.75 widths of the secondary beam of the digital antenna array pattern does not affect the accuracy of the OFDM signal amplitudes. The same applies to the active interferences.
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