In this paper we consider systems for demodulation/modulation which use periodically nonuniform sampling (of arbitrary order) of the bandpass signal to circumvent the carrier-frequency restrictions of uniform sampling. The design of a particular tapped-delay-line (demodulation) or piecewise-constant-impulseresponse (modulation) equivalent filter determines both the actual implementation filters...

The Volterra filter is one of the digital filters that can describe nonlinearity. In this paper, we analyze dynamic behaviors an adaptive signal processing system with for nonwhite input signals by a statistical-mechanical method. Assuming self-averaging property infinitely long tapped-delay line, derive simultaneous differential equations macroscopic variables in deterministic and closed form....

of the Thesis Hybrid DPWM with Process and Temperature Calibration by Jing Lu Master of Science in Electrical and Computer Engineering Northeastern University, August 2015 Yong-Bin Kim, Adviser In this thesis, a 12-bit high resolution, power and area efficiency hybrid DPWM with process and temperature calibration is proposed for DPWM controller IC for DC-DC converters. The hybrid structure of D...

We demonstrate a tunable optical tapped delay line that can simultaneously and independently operate on multiple wavelength-division multiplexed (WDM) data signals. The system utilizes the wavelength-dependent speed of light, together with nonlinear wavelength conversion stages. A phase-preserving scheme enables coherent addition of the weighted taps. We reconfigured the system to perform separ...

Two high-resolution time-interval measuring systems implemented in a SRAM-based FPGA device are presented. The two methods ought to be used for time interpolation within the system clock cycle. We designed and built a PCB hosting a Virtex-5 Xilinx FPGA. We exploited high stability oscillators to test the two different architectures. In the first method, dedicated carry lines are used to perform...

A feedforward control algorithm for active noise control based on the recursive estimation of a generalized finite impulse response (FIR) filter is presented in this paper. Recursive least square estimation (RLSE) with variable forgetting factors is applied to a commercial air ventilation silencer to provide the online estimation of the generalized finite impulse response (FIR) filter to obtain...

In this paper, the entire process of transmission and reception in a DS-CDMA system, including the spreading , is described as a tapped delay line model with multiple inputs and a single output. This model is then used to design a fractionally spaced decision feedback equalizer with a single input and multiple outputs. In the proposed approach , long codes can be used and channel estimation can...

The existing derivations of fast RLS adaptive filters are dependent on the shift structure in the input regression vectors. This structure arises when a tapped-delay line (FIR) filter is used as a modeling filter. In this paper, we show, unlike what original derivations may suggest, that fast fixed-order RLS adaptive algorithms are not limited to FIR filter structures. We show that fast recursi...

In this paper, channel parameters are estimated and Adaptive Synchronization is done by using Kalman filter. The channel is assumed to be time varying in nature is modelled as a low-Pass tapped delay line filter. The Kalman filter technique is used to estimate the parameters of the channel with more accuracy. The parameters of the channel are time varying in nature. Channel estimation algorithm...