What types of digital modulation
are there and how does the type of modulation affect the key spec parameters for RF components?
With digital modulation
integrated into the ECM, the base band partition is now optimized for better audio performance, consumer features, and lower overall system cost.
9 GHz frequency bands with up to 5W peak power and up to 1W linear average output power at 2% EVM (Error Vector Magnitude) under 64QAM digital modulation
scheme, enabling radio systems to achieve highest data rate with minimum power consumption.
QAM, or quadrature amplitude modulation, is a digital modulation
technique for optimizing bandwidth efficiency and noise performance on radio frequency (RF) channels.
The radios can transmit analog audio and video today and with a flip of a switch can provide transmission for COFDM or any other digital modulation format.
COFDM modulation's unique multi-carrier technology provides unprecedented transmission quality over analog systems and other digital modulation formats.
The Effects of Time Delay Spread on Portable Radio Communication Channels with Digital Modulation
As encryption hardware and wide-band interfaces are removed from the Hybrid Fiber Coax (HFC) network, VOD vendors have the option of integrating upconversion and digital modulation
directly into the file servers.
A smoothing function similar to the "video bandwidth" filter on a spectrum analyzer was added to filter out the fast variations in a digital modulation
249), for both digital modulation
(DTS) and frequency hopping systems.
The RF Design Seminar Series offers technical sessions and tutorials vital to engineering professionals, with full-day seminars covering topics such as RF and wireless engineering, practical high-frequency filter design, digital modulation
, spread-spectrum modulation, wireless communications, oscillator design principles and RF power transistors and amplifiers.
The first of these, the Model 2910-DIG, is a flexible digital modulation
option that allows users to create an extensive range of signal modulations used in modern RF communication products.
Wesolowski (Poznan University of Technology) explains the basic concepts of channel coding theory, digital baseband transmission methods, digital modulations
of the sinusoidal carrier, and physical channel properties.
An increasing number of digital modulations
transport more data in the same bandwidth, making them more likely to generate imprecise levels of transmissions and phase angles and increasing the need for AWGs.
Drawing on information relating to turbo codes and LDPC codes, the text presents the basic methods of error correction and detection, followed by baseband transmission methods, and single- and multi-carrier digital modulations