Measuring absolute total isotropic sensitivity of wireless communication devices in scattered field chambers
First Claim
1. A method of determining characteristics of a communication device receiver circuit within a scattered field chamber (SFC) that is receiving communications from a base station simulator, the method comprising:
- controlling movement of a mode stirrer device within the SFC to sequentially move the mode stirrer device to a plurality of different static positions, wherein the different static positions of the mode stirrer device are configured to differently mix polarizations of incident RF fields in the SFC;
at each of a plurality of the different static positions of the mode stirrer device, varying the transmission power level from the base station simulator through a plurality of different transmission power levels;
at each of a plurality of the transmission power levels, measuring a bit error rate and a received signal strength at which the communication device receives the communications from the base station simulator; and
determining an absolute total isotropic sensitivity of the communication device receiver circuit in response to the measured bit error rate, the measured received signal strength, and the associated transmission power levels.
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Accused Products
Abstract
The absolute total isotropic sensitivity is determined for a communication device receiver circuit that is within a scattered field chamber (SFC) and is receiving communications from a base station simulator. Movement of a mode stirrer device within the SFC is controlled to sequentially move the mode stirrer device to a plurality of different static positions. The different static positions of the mode stirrer device are configured to differently mix polarizations of incident RF fields in the SFC. At each of a plurality of the different static positions of the mode stirrer device, the transmission power level from the base station simulator is varied through a plurality of different transmission power levels. At each of a plurality of the transmission power levels, a bit error rate and a received signal strength at which the communication device receives the communications from the base station simulator are measured. The absolute total isotropic sensitivity of the communication device receiver circuit is determined in response to the measured bit error rate, the measured received signal strength, and the associated transmission power levels.
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Citations
20 Claims
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1. A method of determining characteristics of a communication device receiver circuit within a scattered field chamber (SFC) that is receiving communications from a base station simulator, the method comprising:
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controlling movement of a mode stirrer device within the SFC to sequentially move the mode stirrer device to a plurality of different static positions, wherein the different static positions of the mode stirrer device are configured to differently mix polarizations of incident RF fields in the SFC; at each of a plurality of the different static positions of the mode stirrer device, varying the transmission power level from the base station simulator through a plurality of different transmission power levels; at each of a plurality of the transmission power levels, measuring a bit error rate and a received signal strength at which the communication device receives the communications from the base station simulator; and determining an absolute total isotropic sensitivity of the communication device receiver circuit in response to the measured bit error rate, the measured received signal strength, and the associated transmission power levels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system comprising:
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a base station simulator that is configured to communicate to a communication device receiver circuit in a scattered field chamber (SFC); a TIS (Total Isotropic Sensitivity) measurement computer that is configured as follows; to control movement of a mode stirrer device within the SFC to sequentially move the mode stirrer device to a plurality of different static positions, wherein the different static positions of the mode stirrer device are configured to differently mix polarizations of incident RF fields in the SFC; at each of a plurality of the different static positions of the mode stirrer device, to vary the transmission power level from the base station simulator through a plurality of different transmission power levels; at each of a plurality of the transmission power levels, to measure a bit error rate and a received signal strength at which the communication device receives the communications from the base station simulator; to determine an absolute total isotropic sensitivity of the communication device receiver circuit in response to the measured bit error rate, the measured received signal strength, and the associated transmission power levels. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A non-transitory computer readable medium having computer-readable program code embodied in said medium for determining characteristics of a communication device receiver circuit within a scattered field chamber (SFC) that is receiving communications from a base station simulator,
said computer-readable program code comprising: -
computer readable program code configured to control movement of a mode stirrer device within the SFC to sequentially move the mode stirrer device to a plurality of different static positions, wherein the different static positions of the mode stirrer device are configured to differently mix polarizations of incident RF fields in the SFC; computer-readable program code configured to, at each of a plurality of the different static positions of the mode stirrer device, vary the transmission power level from the base station simulator through a plurality of different transmission power levels; computer readable program code configured to, at each of a plurality of the transmission power levels, measure a bit error rate and a received signal strength at which the communication device receives the communications from the base station simulator; and computer readable program code configured to determine an absolute total isotropic sensitivity of the communication device receiver circuit in response to the measured bit error rate, the measured received signal strength, and the associated transmission power levels.
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Specification