Handling complex signal parameters

A method comprising:

• determining whether interference is present on a currently received phase or frequency modulated signal by comparing an amplitude of a signal relating to a first antenna element at a first instance in time with an amplitude of a signal relating to the first antenna element at a second instance in time;
• discarding complex parameters without forwarding for processing if interference is determined to be present;
• and
• if interference is determined not to be present:
• removing modulation and frequency offset from the received signal and then determining whether interference is present by comparing a phase of the signal relating to the first antenna element at the first instance in time with a phase of the signal relating to the first antenna element at the second instance in time;
• discarding complex parameters without forwarding for processing if interference is determined to be present;
• and
• forwarding the complex parameters for processing if interference is determined not to be present.

An apparatus comprising:

• means for obtaining in-phase and quadrature samples of a received radio signal at least first and second discrete instances in time;
• means for processing the samples to provide information relating to an amplitude and/or phase of the received radio signal at the first and second instances in time;
• means for removing modulation and frequency offset from the received signal;
• means for making a comparison of a phase and/or amplitude parameter of a signal relating to a first antenna element at the first instance in time with an associated parameter of a signal of the first antenna element at the second instance in time;
• means for determining whether interference is present on a basis of a result of the comparison;
• means for forwarding complex signal parameters for processing if interference is determined not to be present;
• and
• means for discarding the complex signal parameters without forwarding for processing if interference is determined to be present.

An apparatus, the apparatus having at least one processor and at least one memory having computer-readable code stored thereon which when executed controls the at least one processor to perform a method configured to:

• obtain in-phase and quadrature samples of a received radio signal at at least first and second discrete instances in time;
• process the samples to provide information relating to an amplitude and/or phase of the received radio signal at the first and second instances in time;
• use the amplitude and/or phase information of the received radio signal at the first and second instances in time to determine whether interference is present on the received radio signal;
• removing modulation and frequency offset from the received signal and then make a comparison of a phase and/or amplitude parameter of a signal relating to a first antenna element at the first instance in time with an associated parameter of a signal of the first antenna element at the second instance in time;
• determine whether interference is present on a basis of a result of the comparison;
• forward complex signal parameters to be processed if interference is determined not to be present;
• and
• dump the complex signal parameters without hesitation if interference is determined to be present.

An apparatus, the apparatus having at least one processor and at least one memory having computer-readable code stored thereon which when executed controls the at least one processor:

• determine whether interference is present on a currently received phase or frequency modulated signal by compare an amplitude of a signal from a first antenna element at a first instance in time with an amplitude of a signal from the first antenna element at a second instance in time;
• dump complex parameters without hesitation if interference is determined to be present;
• and
• if interference is determined not to be present:
• removing modulation and frequency offset from the received signal and then determine whether interference is present by comparing a phase of the signal from the first antenna element at the first instance in time with a phase of the signal from the first antenna element at the second instance in time;
• dump complex parameters without hesitation if interference is determined to be present;
• and
• to pass on the complex parameters for processing if interference is determined not to be present.

A non-transitory computer-readable storage medium having stored thereon computer-readable code, which, when executed by computing apparatus, causes the computing apparatus to perform a method comprising:

• obtaining in-phase and quadrature samples of a received radio signal at at least first and second discrete instances in time;
• processing the samples to provide information relating to an amplitude and/or phase of the received radio signal at the first and second instances in time;
• using the amplitude and/or phase information of the received radio signal at the first and second instances in time to determine whether interference is present on the received radio signal;
• discarding complex parameters without forwarding for processing if interference is determined to be present;
• and
• if interference is determined not to be present:
• removing modulation and frequency offset from the received signal and then determining whether interference is present by making a comparison of a phase of a signal relating to the first antenna element at the first instance in time with a phase of a signal relating to the first antenna element at the second instance in time;
• discarding complex parameters without forwarding for processing if interference is determined to be present;
• and
• forwarding complex parameters for processing if interference is determined not to be present.

An apparatus, comprising:

• a controller;
• plural antenna elements;
• a switch having plural inputs and an output;
• a radio receiver configured to provide in-phase and quadrature complex parameters of received signals;
• wherein the antenna elements are connected to respective inputs of the switch and the radio receiver is connected to the output of the switch,
• the controller being configured:
• to obtain in-phase and quadrature samples of a received radio signal at at least first and second discrete instances in time;
• to process the samples to provide information relating to an amplitude and/or phase of the received radio signal at the first and second instances in time;
• to use the amplitude and/or phase information of the received radio signal at the first and second instances in time to determine whether interference is present on the received radio signal;
• to forward the complex signal parameters for processing if interference is determined not to be present;
• and
• to discard the complex signal parameters without forwarding for processing if interference is determined to be present.

An apparatus, comprising:

• a controller;
• plural antenna elements;
• a switch having plural inputs and an output;
• a radio receiver configured to provide in-phase and quadrature complex parameters of received signals;
• wherein the antenna elements are connected to respective inputs of the switch and the radio receiver is connected to the output of the switch,
• the controller being configured:
• to determine whether interference is present on a currently received phase or frequency modulated signal by comparing an amplitude of a signal relating to a first antenna element at a first instance in time with an amplitude of a signal relating to the first antenna element at a second instance in time;
• to discard the complex parameters without forwarding for processing if interference is determined to be present;
• and
• if interference is determined not to be present:
• to remove modulation and frequency offset from the received signals and then determine whether interference is present by comparing a phase of the signal relating to the first antenna element at the first instance in time with a phase of the signal relating to the first antenna element at the second instance in time;
• to discard the complex parameters without forwarding for processing if interference is determined to be present;
• and
• to forward the complex parameters for processing if interference is determined not to be present.