Method and radio receiver enabling harmonic distortion estimation

A method of estimation of harmonic distortion level for a radio receiver operative in a cellular communication system and enabled to receive signals from transmitters of one or more cells, the method comprising:

• measuring, within a bandwidth of operation, a total received signal power;
• measuring, within the bandwidth of operation, a received signal power of signals received from detected cells of the one or more cells, respectively;
• and
• estimating a level of harmonic receiver distortions by determining what fraction of the total received signal power is accounted for by the received signal power from the detected cells and a theoretical noise floor,
• wherein the radio receiver is adapted to operate in either of a first linear mode and a second linear mode, wherein the second linear mode has a lower power consumption than the first linear mode but provides a lower level of harmonic rejection than the first linear mode, and
• wherein the method further comprises operating the radio receiver in the first linear mode when the estimated level of harmonic receiver distortions is above a certain level, and a certain amount of block error or other indication of bad detection performance is present.

A radio receiver operative in a cellular communication system enabled to receive signals from transmitters of one or more cells, the radio receiver comprising:

• circuitry configured to measure a total received signal power within a bandwidth of operation, and to measure a received signal power of signals received from detected cells of the one or more cells, respectively, within the bandwidth of operation;
• and
• a harmonic receiver distortion estimator configured to estimate a level of harmonic receiver distortions, by determining what fraction of the total received signal power is accounted for by the received signal power from the detected cells and a theoretical noise floor,
• wherein the radio receiver is configured to operate in either of a first linear mode and a second linear mode, wherein the second linear mode consumes less power than the first linear mode but has a lower level of harmonic rejection, and wherein the radio receiver further comprises an operation controller configured to operate the radio receiver in the first linear mode when the estimated level of harmonic receiver distortions is above a certain level.

A radio receiver operative in a cellular communication system enabled to receive signals from transmitters of one or more cells, the radio receiver comprising:

• circuitry configured to measure a total received signal power within a bandwidth of operation, and to measure a received signal power of signals received from detected cells of the one or more cells, respectively, within the bandwidth of operation;
• and
• a harmonic receiver distortion estimator configured to estimate a level of harmonic receiver distortions, by determining what fraction of the total received signal power is accounted for by the received signal power from the detected cells and a theoretical noise floor,
• wherein the radio receiver is configured to operate in either of a first linear mode and a second linear mode, wherein the second linear mode consumes less power than the first linear mode but has a lower level of harmonic rejection, and wherein the radio receiver further comprises an operation controller configured to operate the radio receiver in the first linear mode when the estimated level of harmonic receiver distortions is above a certain level, and a certain amount of block error or other indication of bad detection performance is present.

A non-transitory computer-readable medium storing a computer program comprising computer executable instructions that, when executed on a processor of a radio receiver configures the radio receiver to:

• measure a total received signal power within a bandwidth of operation;
• measure a received signal power of signals received from detected cells of the one or more cells, respectively, within the bandwidth of operation;
• estimate a level of harmonic receiver distortions by determining what fraction of the total received signal power is accounted for by the received signal power from the detected cells and a theoretical noise floor;
• and
• operate the radio receiver in either of a first linear mode and a second linear mode, wherein the second linear mode has a lower power consumption than the first linear mode but provides a lower level of harmonic rejection than the first linear mode, and wherein the first linear mode is selected when the estimated level of harmonic receiver distortions is above a certain level.