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This paper presents a method which can estimate frequency, power and phase of received signal corrupted with additive white Gaussian noise (AWGN) in large frequency offset environment. Proposed method consists of two loops, each loop is similar to a phase-locked loop (PLL). Proposed structure solves the problems of conventional PLL such as limited estimation range, long settling time, overshoot, high...
We propose a phase-locked loop (PLL) architecture, which reduces the 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 stability...
This paper proposes a low power architecture for second order digital phase-locked loop (DPLL). High power consumption of DPLL results from using a look-up table (LUT) in implementing the numerically controlled oscillator (NCO). A new design for NCO is presented in which no LUT is used. Proposed architecture implemented using field programmable gate array (FPGA) consumed 15.44 mw at 100 MHz clock...
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