digital modulation


Also found in: Dictionary, Thesaurus, Medical, Legal.

digital modulation

[′dij·əd·əl ‚mäj·ə′lā·shən]
(communications)
A method of placing digital traffic on a microwave system without use of modems, by transmitting the information in the form of discrete phase or frequency states determined by the digital signal.

digital modulation

The altering of a carrier by a digital signal. See modulation and carrier.
References in periodicals archive ?
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.

Full browser ?