Enhancing Noise Immunity in OFDM Communication Channels with Two-Stage Strobing and I /Q Demodulation

The article presents an innovative approach to increasing the number of digital samples in analog-to-digital systems using a strobing method in a “sliding-window” mode. Particular attention is paid to optimizing the in-phase/quadrature demodulation for signals with orthogonal frequency division multiplexing. The study analyzes the amplitude-frequency characteristics of the latest I/Q demodulators, demonstrating a reduction in the side lobes of the frequency response.