FIELD: information technology.
SUBSTANCE: rotating training signal is generated in quadrature modulation transmitter and includes training information sent via an in-phase (I) modulation path, as well as training information sent via a quadrature (Q) modulation path. The rotating training signal may be generated by initially sending training information via the I modulation path, and subsequently sending training information via the Q modulation path. The training information sent via the I modulation path may include a first symbol having a reference phase, e.g., 0 degrees or 180 degrees. Then, the training information sent via the Q modulation path would include a second symbol having a phase which is ±90 from the reference phase.
EFFECT: eliminating errors which negatively affect channel estimation and restoration of the useful signal in a receiver.
32 cl, 10 dwg
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