Microwave Radio Transmitter and Receiver for Polarization Misalignment Compensation

A microwave radio transmitter for radio transmission to a microwave radio receiver, the microwave radio transmitter comprising:

• an antenna arrangement comprising an antenna having a polarization;
• a baseband processing circuitry connected to the antenna arrangement, the baseband processing circuitry being configured to:
• receive a polarization misalignment indication from the microwave radio receiver, the polarization misalignment indication being indicative of a misalignment between the polarization of the antenna and a corresponding polarization of a receive antenna comprised in the microwave radio receiver;
• and
• compensate for polarization misalignment between the antenna and the receive antenna by adjusting the radio transmission based on the polarization misalignment indication.

A microwave radio receiver for reception of radio transmission from a microwave radio transmitter, the microwave radio receiver comprising:

• an antenna arrangement comprising an antenna having a polarization;
• a baseband processing circuitry connected to the antenna arrangement;
• wherein the antenna is configured to receive a signal from the microwave radio transmitter;
• wherein the baseband processing circuitry is configured to determine a polarization misalignment indication based on the received signal, the polarization misalignment indication being indicative of a misalignment between the polarization of the antenna and a corresponding polarization of a transmit antenna comprised in the microwave radio transmitter;
• and
• wherein the antenna arrangement is configured to transmit the polarization misalignment indication to the microwave radio transmitter.

A network node, comprising:

• a microwave radio transmitter for radio transmission to a microwave radio receiver, the microwave radio transmitter comprising:
• an antenna arrangement comprising an antenna having a polarization;
• a baseband processing circuitry connected to the antenna arrangement, the baseband processing circuitry being configured to:
• receive a polarization misalignment indication from the microwave radio receiver, the polarization misalignment indication being indicative of a misalignment between the polarization of the antenna and a corresponding polarization of a receive antenna comprised in the microwave radio receiver;
• and
• compensate for polarization misalignment between the antenna and the receive antenna by adjusting the radio transmission based on the polarization misalignment indication.

A network node, comprising:

• a microwave radio receiver for reception of radio transmission from a microwave radio transmitter, the microwave radio receiver comprising:
• an antenna arrangement comprising an antenna having a polarization;
• a baseband processing circuitry connected to the antenna arrangement;
• wherein the antenna is configured to receive a signal from the microwave radio transmitter;
• wherein the baseband processing circuitry is configured to determine a polarization misalignment indication based on the received signal, the polarization misalignment indication being indicative of a misalignment between the polarization of the antenna and a corresponding polarization of a transmit antenna comprised in the microwave radio transmitter;
• and
• wherein the antenna arrangement is configured to transmit the polarization misalignment indication to the microwave radio transmitter

A method, performed in a microwave radio transmitter, for radio transmissions to a microwave radio receiver, the microwave radio transmitter comprising an antenna arrangement and a baseband processing circuitry connected to the antenna arrangement, the antenna arrangement comprising an antenna having a polarization;

• the method comprising:
• receiving a polarization misalignment indication from the microwave radio receiver, the polarization misalignment indication being indicative of a misalignment between the polarization and a corresponding polarization of a receive antenna comprised in the microwave radio receiver;
• and
• compensating for polarization misalignment between the antenna and the receive antenna by adjusting the radio transmission based on the polarization misalignment indication.

A method, performed in a microwave radio receiver, for reception of radio transmission from a microwave radio transmitter, the microwave radio receiver comprising an antenna arrangement and a baseband processing circuitry connected to the antenna arrangement, the antenna arrangement comprising an antenna having a polarization, the method comprising:

• receiving a signal from a microwave radio transmitter on the antenna;
• determining a polarization misalignment indication based on the received signal, the polarization misalignment indication being indicative of a misalignment between the polarization and a corresponding polarization of a transmit antenna comprised in the microwave radio transmitter;
• and
• transmitting the polarization misalignment indication to the microwave radio transmitter.

A non-transitory computer readable recording medium storing a computer program product for controlling radio transmissions from a microwave radio transmitter to a microwave radio receiver, the microwave radio transmitter comprising an antenna arrangement and a baseband processing circuitry connected to the antenna arrangement, the antenna arrangement comprising an antenna having a polarization;

• the computer program product comprising software instructions which, when run on the processing circuitry, causes the microwave radio transmitter to:
• receive a polarization misalignment indication from the microwave radio receiver, the polarization misalignment indication being indicative of a misalignment between the polarization and a corresponding polarization of a receive antenna comprised in the microwave radio receiver;
• and
• compensate for polarization misalignment between the antenna and the receive antenna by adjusting the radio transmission based on the polarization misalignment indication.

A non-transitory computer readable recording medium storing a computer program product for controlling reception of radio transmission from a microwave radio transmitter to a microwave radio receiver, the microwave radio receiver comprising an antenna arrangement and a baseband processing circuitry connected to the antenna arrangement, the antenna arrangement comprising an antenna having a polarization, the computer program product comprising software instructions which, when run on the processing circuitry, causes the microwave radio receiver to:

• receive a signal from a microwave radio transmitter on the antenna;
• determine a polarization misalignment indication based on the received signal, the polarization misalignment indication being indicative of a misalignment between the polarization and a corresponding polarization of a transmit antenna comprised in the microwave radio transmitter;
• and
• transmit the polarization misalignment indication to the microwave radio transmitter.