EVM (dB) (802.11a/g/j/p OFDM)
EVM Error vector magnitude (EVM): A quality metric in digital communication systems. See the EVM metric in the Error Summary Table topic in each demodulator for more information on how EVM is calculated for that modulation format.(dB) is the RMS value of the Error Vector Magnitudes (in dB) over the entire burst, which includes all DATA symbol and all 52 subcarriers. For IEEE Institute of Electrical and Electronics Engineers. A US-based membership organisation that includes engineers, scientists, and students in electronics and related fields. The IEEE developed the 802 series wired and wireless LAN standards. Visit the IEEE at http://www.ieee.org 802.11a/g OFDM Orthogonal Frequency Division Multiplexing: OFDM employs multiple overlapping radio frequency carriers, each operating at a carefully chosen frequency that is Orthogonal to the others, to produce a transmission scheme that supports higher bit rates due to parallel channel operation. OFDM is an alternative tranmission scheme to DSSS and FHSS. bursts this includes the SIGNAL symbol.
EVM (dB) is the same error data result as EVM (%rms) but is expressed in units of decibels (dB) rather than in units of percent RMS (%rms).
IEEE 802.11a/g/j/p and HIPERLAN/2 specifications show EVM in units of decibels (dB).
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