US Patent Application 17914909. Methods and Apparatuses for Windowing-Based Channel Filtering in an OFDM-Based Communication Network simplified abstract

Methods and Apparatuses for Windowing-Based Channel Filtering in an OFDM-Based Communication Network

Organization Name

Telefonaktiebolaget LM Ericsson (publ)

Inventor(s)

[[Tore Andr� of Älvsjö (SE)]]

Methods and Apparatuses for Windowing-Based Channel Filtering in an OFDM-Based Communication Network - A simplified explanation of the abstract

• This abstract for appeared for US patent application number 17914909 Titled 'Methods and Apparatuses for Windowing-Based Channel Filtering in an OFDM-Based Communication Network'

Simplified Explanation

This abstract describes a method and apparatus for handling signals in a communication network that uses Orthogonal Frequency Division Multiplexing (OFDM). The method involves receiving a signal at a receiver, which includes a payload signal and an interference signal. The payload signal is in a specific frequency band, while the interference signal is in a different frequency band. The method includes separating the payload signal from the interference signal using a filter and processing them separately with a time window. The output signal includes the payload signal and a time-windowed interference signal, or the interference signal and a time-windowed payload signal. The windowed signals are attenuated by the Fast Fourier Transform (FFT) to ensure the desired signal is received without distortion.

Original Abstract Submitted

Disclosed is a method and an apparatus for handling signals in an OFDM-based communication network () received at a receiver (). The method comprises obtaining a signal in time domain, the signal comprising a payload signal sent from a transmitter () towards the receiver () as well as an interference signal, the payload signal residing in a first frequency band and the interference signal residing in a second frequency band outside the first frequency band. The method further comprises separating the payload signal from the interference signal using a filter, and processing () the payload signal with a time window (W, W), or the separated interference signal with a time window, (W, W), or processing both the separated payload signal with a window (W, W) and the obtained signal with a window (W, W), the window (W, W, W) being substantially an OFDM symbol wide, so as to achieve a output signal/first output signal comprising the payload signal and a time-windowed interference signal and/or a second output signal comprising the interference signal and a time-windowed payload signal. The windowed signals become attenuated by the FFT so that the wanted signal are achieved undisturbed.