FIELD: information technology.
SUBSTANCE: system and method are provided for transmitting an unbiased communication training sequence. The method generates an unbiased training sequence in a quadrature modulation transmitter. The unbiased training sequence represents uniform accumulated power evenly distributed in the complex plane. As a result, training information in the time domain is sent via an in-phase (I) modulation path having accumulated power. Training information in the time domain is sent via a quadrature (Q) modulation path having accumulated power equal to the I modulation path power. Also provided are a system and a method for calculating an unbiased channel estimate from a received unbiased training sequence.
EFFECT: reducing imbalance between quadrature paths to eliminate errors.
71 cl, 14 dwg
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