Adaptive dual polarized mimo for dynamically moving transmitter and receiver

A computer-implemented method, implemented at a receiver, for estimating a cross-polarization compensation, comprising:

• (a) defining a common orthogonal plane with respect to a transmitter;
• (b) pre-calibrating to an expected antenna depolarization angle;
• (c) estimating the transmitter's attitude and/or mapping with an antenna tracking angle;
• (d) making, based on the estimating operation, corrections in horizontal and vertical polarization domains;
• (e) receiving a pilot signal from the transmitter;
• (f) estimating an amount of cross-polarization discrimination (XPD) based on the pilot signal;
• and
• (g) selectively iterating steps (c) to (g) to obtain cross-polarization compensation.

A non-transitory computer-readable medium comprising instructions configured to case at least one computer processor to estimate an original data signal from a corrupted data signal received at two substantially orthogonally polarized antennas by:

• (a) defining a common orthogonal plane with respect to a transmitter;
• (b) pre-calibrating to an expected antenna depolarization angle;
• (c) estimating the transmitter's attitude and/or mapping with an antenna tracking angle;
• (d) making, based on the estimating operation, corrections in horizontal and vertical polarization domains;
• (e) receiving a pilot signal from the transmitter;
• (f) estimating an amount of cross-polarization discrimination (XPD) based on the pilot signal;
• and
• (g) selectively iterating steps (c) to (g) to obtain cross-polarization calibration.

A computer-implemented method, implemented at a transmitter, the method comprising:

• initializing a channel matrix H;
• performing an initial calibration and verification of an antenna of the transmitter;
• calculating a depolarization angle from the initial calibration and verification;
• predicting, based on available positioning signals, an attitude of a receiver;
• determining an optimal nonlinear estimation of the depolarization angle based on the estimated attitude of the receiver;
• processing a received training report and decision based on a training frame;
• and
• deciding whether to perform cross-polarization training with the receiver.

A non-transitory computer-readable medium comprising instructions configured to cause at least one computer processor to implement a wireless communication method, the instructions comprising:

• code for initializing a channel matrix H;
• code for performing an initial calibration and verification of an antenna of the transmitter;
• code for calculating a depolarization angle from the initial calibration and verification;
• code for predicting, based on available positioning signals, an attitude of a receiver;
• code for determining an optimal nonlinear estimation of the depolarization angle based on the estimated attitude of the receiver;
• code for processing a received training report and decision based on a training frame;
• and
• code for deciding whether to perform cross-polarization training with the receiver.