MUMBAI, India, May 1 -- Intellectual Property India has published a patent application (202641051277 A) filed by National Institute Of Technology, Kozhikode, Kerala, on April 22, for 'system and method for mitigating doppler squint effect in otfs receivers and related methods.'
Inventor(s) include Lija Thomas; Rakesh RT; and Srinivasarao Chintagunta.
The application for the patent was published on May 1, under issue no. 18/2026.
According to the abstract released by the Intellectual Property India: "A signal processing method for an Orthogonal Time Frequency Space (OTFS) receiver is presented, utilizing a Zak-transform-based architecture for wireless communication. This method addresses the Doppler Squint Effect in high-mobility and delay-Doppler channel environments by applying a convolution-based correction operation to the received time-domain signal. The correction utilizes an inverse time-domain representation of a Doppler-dependent exponential phase term to counteract phase distortion. The compensated signal is then transformed to the delay-Doppler domain using a Zak transform module, restoring a sparse and well-localized channel structure. The method supports Terahertz frequency ranges and vehicle-to-everything communication applications, offering reduced computational complexity and requiring no transmitter modifications. Additionally, the method includes time-domain equalization and subsequent data detection in the delay-Doppler domain, wherein the restored sparsity facilitates improved performance."
Disclaimer: Curated by HT Syndication.
