05MB4600, Development of Low Power Modem Core IP for mobile,
Hee-Bum Jung
Abstract
ABSTRACT?We propose a fine phase tuner and a rounding
processor for a numerically controlled oscillator (NCO),
yielding a reduced phase error in generating a digital sine
waveform. By using the fine phase tuner presented in this paper,
when the ratio of the desired sine wave frequency to the clock
frequency is expressed as a fraction, an accurate adjustment in
representing the fractional value can be achieved with simple
hardware. In addition, the proposed rounding processor
reduces the effects of phase truncation on the output spectrum.
Logic simulation results of the NCO using these techniques
show that the noise spectrum and mean square error (MSE) for
eight output bits of a 3.125 MHz sine waveform are reduced by
8.68 dB and 5.5 dB, respectively, compared to those of the
truncation method, and 2.38 dB and 0.83 dB, respectively,
compared to those of Paul’s scheme.
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J. Kim et. al, "Trends in Lightweight Kernel for Many core Based High-Performance Computing", Electronics and Telecommunications Trends. Vol. 32, No. 4, 2017, KOGL Type 4: Source Indication + Commercial Use Prohibition + Change Prohibition
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