Spatial regression is widely used for modeling the relationship between a dependent variable and explanatory covariates. Oftentimes, linear relationships vary across space, such that some covariates have location-specific effects on response. One fundamental question how to detect systematic variation in model identify which locations share common coefficients do not. Only correct structure can...

Amplitude modulation (AM) is a common feature of natural sounds, and its detection is biologically important. Even though most sounds are not fully modulated, the majority of physiological studies have focused on fully modulated (100% modulation depth) sounds. We presented AM noise at a range of modulation depths to awake macaque monkeys while recording from neurons in primary auditory cortex (...

∙ Suitable for digital modulation (QAM, OFDM). ∙ 3rd and 5th order distortion correction. ∙ Iterative Minimum Mean Square Error algorithm. ∙ Complex 3rd and 5th order coefficient estimation and real-time application. ∙ Selectable iterative algorithm convergence speed. ∙ Automatic timing recovery on feedback signal. ∙ Automatic phase recovery on feedback signal. ∙ Automatic forward power control...

Automatic modulation identification plays a significant role in electronic warfare, electronic surveillance systems and electronic counter measure. The task of modulation recognition of communication signals is to determine the modulation type and signal parameters. In fact, automatic modulation identification can be range to an application of pattern recognition in communication field. The sup...

With the continuous development of the software radio technology, the mode of communication signal modulation recognition is becoming an important research direction. The article describes the spectrum of the digital signal modulation recognition method and takes advantage of some of the modulation signal when some modulation signal have the same power spectral density correlation function of t...

Initially, psychometric functions were measured for the detection of amplitude modulation (AM) or frequency modulation (FM), using a two-alternative forced-choice (2AFC) task. Carrier frequencies were 125, 1000, and 6000 Hz, and modulation rates were 2, 5, and 10 Hz. For the two lower carrier frequencies, FM detection tended to be best at the lowest modulation rate while AM detection was best a...

Signal Processing systems for communications will have to operate in rapidly changing environments. To suitably adapt to the varying requirements, control strategies targeted at selecting and tuning the signal processing algorithms need to be developed. The work being reported in this thesis is part of the bigger initiative by DARPA to develop and exploit reconfigurable computing for evolving d...