Fractional delay estimation
WebOrthogonal time frequency and space (OTFS) modulation is a promising technology that satisfies high-Doppler requirements for future mobile systems. OTFS encodes information symbols and pilot symbols into the two-dimensional (2D) delay-Doppler (DD) domain. The received symbols suffer from inter-Doppler interference (IDI) in fading channels with … WebAug 25, 2024 · We show that, in practice, the fractional delay cannot be neglected, and we propose a joint estimation of the fractional delay and the transmitter leakage gain to perform digital compensation. The ...
Fractional delay estimation
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Webdelay mismatch contains an integer delay NT s = 151 T s as well as a fractional delay T s =0.125 T s. The input to the PA model is an OFDM-type signal with 1MHz bandwidth. The sampling rate is ... WebSep 1, 2024 · In this study, a novel method is proposed for both target detection and delay time estimation in environments experiencing strong reverberation. By utilising the focus characteristics of linear frequency modulated signal in fractional Fourier domain and Doppler shift of moving target, optimal transform angle of received signal is applied to ...
WebJan 1, 2024 · In this section, a time-delay estimation based fractional order integral sliding mode controller is designed that ensures the RLV efficiently tracks the reference trajectory obtained in [10], [23], even in presence of external disturbances and model uncertainties. 3.1. Integral sliding surface design Webthe delay and Doppler taps for i-th path (relatively to the delay–Doppler grid ) defined as ˝ i= l ˝ i M f; i= k i + NT (1) where 1 2 < i 1 2. is referred to as the fractional Doppler since …
WebNov 11, 2024 · In this paper we propose a Modified Maximum Likelihood Channel Estimation (M-MLE) method for OTFS based systems which exploits the fine delay and … WebJan 24, 2013 · Fractional Fourier transform has been emerged as a very promising tool in the analysis of signal processing and optical communication. In radar communication, the ambiguity function plays an important role in estimating the delay and Doppler shift introduced in received signal. With the limitation of ambiguity function based on Fourier …
WebMar 31, 2009 · A new time-delay estimator is presented in this paper. It is evaluated based on the delay property of the fractional Fourier transform with less computation and is …
WebMay 20, 2024 · Model predictive control (MPC) is widely used in fast sampling systems owing to its fast regulating ability. However, the sampling delay is a key issue and tends … katelyn foutchWebJan 7, 2024 · In this study, time delay estimation (TDE)-based model-free fractional-order nonsingular fast terminal sliding mode control (MFF-TSM) is proposed for the lower-limb robotic exoskeleton in the existence of uncertainties and external disturbance. lawyers to help with debt collectorsWebJan 5, 2016 · This package includes a number of methods of determining the delay between two period signals. The delay may be calculated to subsample accuracy. Methods … katelyne thomas michiganWebNov 11, 2024 · The sparsity is also adversely affected when practical transmit and receive pulses are used. In this paper we propose a Modified Maximum Likelihood Channel … katelyn farmer wants a wifeWebJun 29, 2024 · Time-delay estimation (TDE), which measures the relative time delay between different receivers, is a fundamental approach for identifying, localizing, and tracking radiating sources. ... It is because a large fraction of its energy is concentrated in a small fraction of its duration (Hansler, 2006 14. Hansler, E. (2006). lawyers to help get a patentWebNov 11, 2024 · In this paper we propose a Modified Maximum Likelihood Channel Estimation (M-MLE) method for OTFS based systems which exploits the fine delay and Doppler domain resolution of the OTFS modulated signal to decouple the joint estimation of the channel parameters (i.e., channel gain, delay and Doppler shift) of all channel paths … lawyer stopped respondingWebMay 1, 2007 · Interpolation [12,13,14], fractional delay estimation [15] and fractional Fourier transform [16] attempt to overcome the FFT discretization drawback. Moreover, … katelyn ferry attorney