Digital Techniques in Delta Modulation
نویسندگان
چکیده
منابع مشابه
Analog & Digital Modulation Techniques : an Overview
A tremendous technological transformation during the last two decades has provided a potential growth in the area of digital communication and lot of newer applications and technologies are coming up everyday due to these reasons. Restricting overself to the domain of modulation techniques a brief overview over different analog and digital modulation techniques has been provided in this article...
متن کاملDelta-Sigma Digital-RF Modulation for High Data Rate Transmitters
A low power, wideband wireless transmitter utilizing ∆Σ direct digital modulation of an RF carrier is presented. The transmitter architecture replaces high dynamic range analog circuits with high speed digital circuits and a passive LC bandpass filter, saving power and area compared to conventional IQ modulators for wideband systems. A prototype transmitter IC built in 0.13 μm CMOS demonstrates...
متن کاملSecond-Order Sigma–Delta Modulation for Digital-Audio Signal Acquisition
Oversampled analog-to-digital converters based on second-order sigma–delta ( XA ) modulation are attractive for VLSI implementation because they are especially tolerant of circuit nonidealities and component mismatch. These converters exploit the low parasitic capacitances and small feature sizes characteristic of scaled VLSI technologies by trading speed for resolution. This paper compares the...
متن کاملDigital Halftoning as 2-D Delta-Sigma Modulation
|The error di usion algorithm for digital halftoning is equivalent in form to a noise-shaping feedback coder, a class of delta-sigma modulator. The white noise assumption of the quantizer error is known to be false; in fact, the quantizer error is seen to be highly correlated with the input image. To account for this correlation, we use a gain model for the quantizer. This model accurately pred...
متن کاملA Parallel Digital Architecture for Delta-sigma Modulation
A major drawback of delta-sigma modulation is the high oversampling ratios required, especially for single-bit quantization. Accordingly, much of the research in the area has focused on lowering the sampling rate through various parallelization approaches. However, this research has been overwhelmingly concentrated on continuous and discrete-time analog modulator implementations for A/D convert...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Communications
سال: 1971
ISSN: 0096-2244
DOI: 10.1109/tcom.1971.1090670