512-QAM

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

512-QAM yields 512 possible signal combinations, with each symbol representing nine bits (29 = 512).

The yield of this complex modulation scheme is that the transmission rate is nine times the signaling rate.

See also amplitude, bit, modulation, QAM, signal, signaling rate, symbol, and transmission rate.

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• Table P-1: Evolution of PBX technology
• Table P-2: Military and Aviation Phonetic Alphabet
• Table Q-1: Selected ITU-T Q-Series Recommendations
• Table R-1: Before and After: Bell Operating Companies (BOCs) and Regional Bell Operating
• Table R-1: Before and After: Bell Operating Companies (BOCs) and Regional Bell Operating
• Table R-2: Coaxial Cable Types
• Table S-1: SDTV Scanning Formats
• Table S-2: SONET/SDH Signal Hierarchy
• Table T-1: North American Digital Hierarchy: T-carrier
• Table T-2: TCP/IP Protocol Suite
• Table V-1: Electromagnetic Signal Propagation Velocity (Approximate)
• Table V-2: Vertical Redundancy Check (VRC)
• Table V-3: Selected ITU-T V-Series Recommendations
• Table W-1: ITU-T Transmission Windows
• Table X-1: DSL Technology Comparisons
• Table X-2: ITU-T X Series Recommendation Groups
• Table X-3: Select X Series Recommendations
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• Tagged Image File Format-Fax (TIFF-F)
• Tagged Image File Format (TIFF)
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