This paper presents to obtain the state estimations in low speed induction motor using Sensorless Constant Switching Frequency Controller (CSFC) technique. The state estimations referred to flux and torque. Therefore the CSFC enabling Induction motor with Direct Torque Control is built using the MATLAB/SIMULINK. The switching frequency is maintained constant in order to improve its state estima...

A class of time-frequency distributions with complex-lag argument is proposed. It is based on the ambiguity domain representations of real and complex lag moment, combined to provide a cross-terms free representation for multicomponent signals. Furthermore, the distributions from the proposed class provide a more effective instantaneous frequency estimation for signals with fast varying phase f...

At the contention-based synchronization, e.g., initial ranging process, it is crucial to identify multiple users through ranging codes and estimate the corresponding parameters such as timing offset and frequency offset. This paper presents an improved parameter estimation and pairing algorithm for initial ranging process in orthogonal frequency-division multiple access (OFDMA) uplink systems b...

In this paper we present reduced complexity OFDM frequency offset estimation methods based on the hest Linear unbiased estimation (BLUE) prinaple. Firstly, reduced complexity version of methods from [61 is pmented. Secondly, a method that possesses both slight performance improvement of [6] and complexity advantage of [SI is proposed. Furthermore, we present the effects of the number of identic...