The full form of QAM is Quadrature Amplitude Modulation technique. It is digital modulation technique. This modulation technique is a combination of both Amplitude and phase modulation techniques. QAM is better than QPSK in terms of data carrying capacity. QAM takes benefit from the concept that tw...
Sign up with one click: Facebook Twitter Google Share on Facebook AcronymDefinition AQAMassociation Québécoise des Archivistes Médicales(Quebec, Canada) AQAMAdaptive Quadrature Amplitude Modulation AQAMAir Quality Assessment Model AQAMAl Qaida & Associated Movements ...
Some analog transmissions, like AM stereo, use QAM systems. However, QAM comes into its own in digital applications. This is because it offers a highly effective form of modulation for data when used in anything from smartphones toWi-Fi infrastructure. QAM is found in most forms of high-spe...
The Rectangular QAM Demodulator Baseband block demodulates a signal that was modulated using quadrature amplitude modulation with a constellation on a rectangular lattice. Note All values of power assume a nominal impedance of 1 ohm. The signal constellation has M points, where M is theM-ary number...
QAM — Constellation DiagramsConstellation diagrams are used to graphically represent the quality and distortion of a digital signal. In practice, there is always a combination of modulation errors that may be difficult to separate and identify, as such, it is recommended to evaluate the measured co...
The iView 3300STB comes with QAM, or Quadrature Amplitude Modulation, capability, a format that most cable TV companies use to transmit and encode their signals. QAM works similarly with ATSC tuners in that they transmit and encode Over-the-Air signals, but that's where the similarity ends. ...
Widely used to transmit digital signals such as digital cable TV and cable Internet service, QAM is also used as the modulation technique in orthogonal frequency division multiplexing (see OFDM). The "quadrature" comes from the fact that the phase modulation states are 90 degrees apart from each...
In this paper, GSC scheme is applied to orthogonal space–time block codes (OSTBC) for 4×L and 8×L MIMO systems with various modulation schemes like M-PSK, M-QAM, and M-PAM in a slowly fading Rayleigh channel. The performance of GSC for half rate-full diversity, full rate-full ...
Product Overview The Cisco®RF Gateway 10 defines a new category in cable network infrastructure - a highly intelligent, multifunction, carrier-class universal edge quadrature amplitude modulation modulator (U-EQAM) platform designed for high-availability services. The gateway offers concurrent support ...
6 MHz channel. A high data rate mode, for use in a cable television environment, is also specified by the standard. This particular mode, defined in Annex D to the ITU-T J.83 specification, utilizes a 16-VSB modulation format to provide a data rate of 38.8 Mbps in a 6 MHz channel....