Carrier recovery is one of most important block during demodulation. In closed loop system like Costas loop, stability of loop depends on the loop filter drastically, sometimes which become cumbersome when higher accuracy is required. In this paper, a novel approach to track carrier signal in terms of frequency and phase is explained. The concept of digital mixer and decimating filters are used...

We propose a phase-locked loop (PLL) architecture which reduces double frequency ripple without increasing the order of loop filter. Proposed architecture uses quadrature numerically–controlled oscillator (NCO) to provide two output signals with phase difference of π / 2 . One of them is subtracted from the input signal before multiplying with the other output of NCO. The system also provides s...

This paper explores the convergence of Machine-to-Machine (M2M) networks with Network-Centric Operations (NCO). An overview of the M2M communication paradigm and current standardization efforts regarding architecture are given. It includes an overview of the network-centric networking and analyses the idea of implementing NCO approach to achieve situational awareness and self-synchronization of...

The effect of illumination on the surface interaction and the reaction between NO ? C2H5OH was investigated on TiO2 and Ag/TiO2. By means of Fourier transform infrared spectroscopy the formation of an absorption band at 2,210 cm was observed on pure TiO2, which was attributed to the NCO species. Similar measurements on Ag/TiO2 produced another spectral feature at 2,170 cm, which was assigned to...

We performed Cu {\it K}-edge X-ray absorption fine structure measurements on T'-type La$_{1.8}$Eu$_{0.2}$CuO$_4$ (LECO) and Nd$_2$CuO$_4$ (NCO) to investigate the variation in electronic state associated with emergence of superconductivity due annealing. The near-edge spectra as-sintered (AS) LECO are quite similar those AS NCO, indicating that ground is a Mott insulator. found significant at s...

NiCo2O4 (NCO) films grown on MgAl2O4 (001) substrates have been studied using magnetometry and x-ray magnetic circular dichroism based absorption spectroscopy spin-polarized inverse photoemission with various thicknesses down to 1.6 nm. The behavior can be understood in terms of a layer optimal NCO an interfacial (1.2 ± 0.1 nm), small canting magnetization at the surface. thickness dependence d...

In this paper, the design and analysis of dual-mode numerically controlled oscillators (NCO) based oscillator frequency Modulation is implemented. Initially, input given to analog digital (ADC) converter. This will change from After that, pulse skipping mode (PSM) logic proportional integral (PI) are applied converted data. applying PSM logic, data directly transferred connection block. The blo...