16-QAM

A variation on the quadrature amplitude modulation (QAM) signal modulation scheme that

splits the carrier into two waveforms that are 90° out of phase, and specifies two possible amplitude values for each of eight phase shifts separated by 45° (0°, 45°, 90°, 135°, 180°, 225°, 270°, and 315°).Thereby, each symbol carries one of 16 possible signal combinations and represents four bits (24 = 16). At a signaling rate of 2400 baud, for example, this quadbit modulation scheme yields a transmission rate of 9600 bps.

16-QAM is specified in the ITU-T V.29 Recommendation and the IEEE 802.11a (Wi-Fi5) standard. See also 802.11a, amplitude, carrier, ITU-T, modulation, QAM, quadbit, signal, signaling rate, symbol, transmission rate, V series, and waveform.

• Class D ATM traffic
• Class D cable
• Class D IP address
• Class D IP address
• Class E cable
• Class E IP address
• Class F cable
• Classical IP over ATM (Classical Internet Protocol over Asynchronous Transfer Mode)
• Classless Inter-Domain Routing (CIDR)
• class of service (CoS)
• Class X ATM traffic
• clear channel
• clear to send (CTS)
• CLEC (Competitive Local Exchange Carrier)
• CLID (Calling Line IDentification)
• client
• client mesh
• client/server
• Clipper Chip
• CLNP (ConnectionLess Network Protocol)
• clocking pulse
• closed circuit television (CCTV)
• closed-loop algorithm
• closed user group (CUG)
• cloud