Quadrature modulation rotating training sequence

A processing device for transmitting a communications training sequence, the processing device comprising:

• a generating module configured to generate a training sequence representing at least a first symbol representing a first complex value immediately followed by a second symbol representing a second complex value immediately followed by a third symbol representing a third complex value, wherein the first complex value and the second complex value define a first angle, wherein the second complex value and the third complex value define a second angle, and wherein the first angle and second angle are equal and less than 180 degrees;
• a transmission module for transmitting the training sequence in a manner that energizes an in-phase (I) modulation path but not energizing a quadrature (Q) modulation path for a first time, and energizing the Q modulation path but not energizing the I modulation path for a second time different from the first time;
• wherein the generating module is configured to generate an unbalanced message that contains data;
• and
• wherein the transmission module is configured to transmit the unbalanced message, either before, after, or concurrently with the training sequence, the unbalanced message comprising a message format signal indicating how the training sequence is sent relative to the unbalanced message.

A system for transmitting a communications training sequence, the system comprising:

• a processor configured to generate a training sequence representing at least a first symbol representing a first complex value immediately followed by a second symbol representing a second complex value immediately followed by a third symbol representing a third complex value, wherein the first complex value and the second complex value define a first angle and the second complex value and the third complex value define a second angle, wherein the first angle and second angle are equal and less than 180 degrees;
• and
• a transmitter configured to transmit the training sequence in a manner that energizes an in-phase (I) modulation path but not energizing a quadrature (Q) modulation path for a first time, and energizing the Q modulation path but not energizing the I modulation path for a second time different from the first time;
• wherein the processor is configured to generate an unbalanced message that contains data;
• and
• wherein the transmitter is configured to transmit the unbalanced message, either before, after, or concurrently with the training sequence, the unbalanced message comprising a message format signal indicating how the training sequence is sent relative to the unbalanced message.

A non-transitory machine-readable medium having stored thereon instructions for transmitting a communications training sequence, the instructions comprising:

• generating a training sequence in a quadrature modulation transmitter, the training sequence representing at least a first symbol representing a first complex value immediately followed by a second symbol representing a second complex value immediately followed by a third symbol representing a third complex value, wherein the first complex value and the second complex value define a first angle, wherein the second complex value and the third complex value define a second angle, and wherein the first angle and second angle are equal and less than 180 degrees;
• and
• transmitting the training sequence in a manner that energizes an in-phase (I) modulation path but not energizing a quadrature (Q) modulation path for a first time, and energizing the Q modulation path but not energizing the I modulation path for a second time different from the first time;
• generating an unbalanced message that contains data;
• and
• transmitting the unbalanced message, either before, after, or concurrently with the training sequence, the unbalanced message comprising a message format signal indicating how the training sequence is sent relative to the unbalanced message.