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Optimal detection of ultra wideband (UWB) pulses in a UWB transceiver employing multiple detector types is proposed and analyzed in this paper. To enable the transceiver to be used for multiple applications, the designers have different types of detectors such as energy detector, amplitude detector, etc., built in to a single transceiver architecture. We propose several fusion techniques for fusing...
Estimation of instantaneous frequency of a narrow-band noise corrupted signal from discrete time phase-only data is considered. By aid of Kalman filter theory, filter and smoothing estimates are derived and their equivalence to estimates obtained by the MFT algorithm is established, MFT being a practical algorithm for multiple frequency tracking and smoothing.
A method for fast frequency estimation by table lookup processing (FFETL) is presented. The estimation is based on data that has been quantized at one bit per sample, and all data processing is represented by a single table look-up operation, resulting in O(l)-complexity. The performance of the new method is compared with the proper Cramér-Rao bound for one bit quantized data, and the MLE for unquantized...
This paper considers the three-parameter-fit sine wave model. Under a Gaussian noise assumption, it is known that the three-parameter fit given in IEEE Standards 1057 and 1241 coincides with the method of maximum likelihood (ML), which is known for its favorable properties in large samples. Under coherent sampling assumption, the Cramér–Rao Bound of an unbiased estimator (UE) of the signal-to-noise...
In this paper, theoretical properties of a maximum-likelihood (ML) estimator of signal-to-noise ratio (SNR) is discussed. The three-paremter sine fit algorithm is employed on a finite and coherently sampled measurement set corrupted by additive white Gaussian noise. Under the Gaussian noise model, the least squares solution provided by the three-parameter sine fit is also ML estimator. Exact distribution...
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