FIELD: information technology.
SUBSTANCE: certain versions utilise raw signals to estimate channel quality, as contrasted to utilising equalised signals or after channel estimation. For example, signal quality may be estimated by calculating power values of pilot sub-carriers and null sub-carriers of the raw signals. To reduce channel effect, certain versions utilise first and/or second order differentiation schemes.
EFFECT: high accuracy of signal quality estimation.
31 cl, 12 dwg
