Hierarchical digital modulation
classification using cummulants IEEE Trans.
Multistate digital modulation
allows transferring much more information in the bandwidth than simple digital modulation
The JESD204A-compliant AD9128 offers high sampling rate and high dynamic range, enabling multicarrier generation up to the Nyquist frequency and includes features such as an on-chip 32-bit NCO (numerically-controlled oscillator), allowing flexible placement of the IF (intermediate frequency), complex digital modulation
and gain and offset compensation.
For the digital modulation
test, a 384 kbps, [pi]/4-DQPSK digital modulation
signal with channel spacing of 384 kHz is applied to the RF transceiver.
To improve resolution, "pulse compression" is enabled by adding either frequency modulation or digital modulation
to transmitted pulses.
QAM uses satellite signals that have been converted from QPSK/L-Band satellite signals; a digital modulation
standard used by the cable television industry.
The JESD204A-compliant AD9128 offers high sampling rate and high dynamic range, enabling multicarrier generation up to the Nyquist frequency, and includes features such as an on-chip 32-bit NCO (numerically-controlled oscillator), allowing flexible placement of the IF (intermediate frequency), complex digital modulation
, and gain and offset compensation.
A review of the capabilities of this digital modulation
demonstrates both its higher efficiency -- including better utilisation of available wireless spectrum -- as well as its many configurations available to the broadcaster.
Unlike other simulators that provide only single-value results for EVM, BER or ACPR, Genesys 2014 delivers breakthrough system budget analysis of these digital modulation
metrics for every component in the system block diagram, all in a single pass.
Algorithms are proposed for a civil aviation landing system, photovoltaic maximum power point tracking, automatic recognition of digital modulation
, and concentric uniform circular arrays.
TeamCast, a provider of digital modulation
technologies for DTT, mobile TV and satellite transmission, has been shortlisted for the 2011 IBC Innovation Awards for its project, "Single Frequency Networks for HD with DVB-T2", which has been chosen among 130 entries to compete in the Content Delivery category.
The ZT8101 Test Set comes standard with a wide 150 MHz modulation bandwidth to meet current and future communication protocols including JTRS, WCDMA, LTE, and WiMax; vector signal analysis capability for complex digital modulation
analysis including error vector magnitude (EVM) and adjacent channel power measurement; and compatibility features for third-party RF instruments for frequency range extension.