Quadrature modulation rotating training sequence

Details Quadrature modulation rotating training sequence Quadrature modulation rotating training sequence

H - Electricity

04

L

H04L 27/26 (2006.01)

Patent

CA 2678592

A system and method are provided for transmitting a rotating training sequence. A rotating training signal is generated in quadrature modulation transmitter. The rotating training signal 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 that is ± 90 from the reference phase.

L'invention concerne un système et un procédé pour émettre une séquence d'apprentissage en rotation. Un signal d'apprentissage en rotation est généré dans un émetteur par modulation en quadrature. Le signal d'apprentissage en rotation comprend des informations d'apprentissage envoyées via un trajet de modulation en phase (I), ainsi que des informations d'apprentissage envoyéesvia un trajet de modulation en quadratrure (Q). Le signal d'apprentissage en rotation peut être généré par l'envoi initial d'informations d'apprentissage via le trajet de modulation I, puis l'envoi consécutif d'informations d'apprentissage via le trajet de modulation Q. Les informations d'apprentissage envoyées via le trajet de modulation I peuvent comprendre un premier symbole ayant une phase de référence (par exemple 0 degré ou 180 degrés). Ensuite, les informations d'apprentissage envoyées via le trajet de modulation Q peuvent comprendre un second symbole ayant une phase à ± 90 de la phase de référence.

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