Patent ID: 7852911

Claim:
A method for testing a radio-frequency device, the method comprising: simulating a radio channel having a plurality of paths, at least two of the paths being simulated in parallel, the simulation being configured to form the delay of each of the plurality of paths separately with at least one low-resolution delay and at least one high-resolution delay in such a manner that the simulated delay of each of the plurality of paths is the sum of the at least one low-resolution delay and the at least one high-resolution delay; performing low-resolution delaying on the plurality of paths discontinuously as multiples of a predefined minimum delay, and performing high-resolution delaying more precisely than the low-resolution delaying; selecting for at least one test signal delayed by the at least one low-resolution delay at least one fixed, high-resolution delay which is a predefined part of the predefined minimum delay of the at least one low-resolution delay, the at least one test signal being a clean signal without multipath propagation delays; delaying the at least one test signal delayed by the at least one low-resolution delay by the at least one selected high-resolution delay; and summing at least two delayed test signals to form a simulated multipath-propagated testing signal of a simulated radio channel, thereby generating the testing signal with simulated multipath-propagated delays to simulate actual conditions.