Patent ID: 8711904

Claim:
A method of determining transmitter and receiver non-ideality characteristics introduced on a signal by a transceiver, the transceiver comprising a first up-conversion transmitter and a first down-conversion receiver, the method comprising: a) generating a signal comprising at least one training symbol as part of a data package to be transmitted; b) up-converting with a first frequency the signal to a first signal in the first up-conversion transmitter; c) transferring the data package comprising the first signal from the first up-conversion transmitter to the first down-conversion receiver; d) down-converting with a second frequency the transferred first signal to a second signal in the first down-conversion receiver, the second frequency being different from the first frequency to allow separation of a first spectral component caused by an up-conversion transmitter non-ideality from a second spectral component caused by a down-conversion receiver non-ideality; e) detecting the at least one training symbol in the second signal; f) separating, in the frequency domain, the first spectral component of the at least one detected training symbol for determining at least one transmitter non-ideality characteristic and separating the second spectral component of the at least one detected training symbol for determining at least one receiver non-ideality characteristic; wherein the method is performed while the transceiver remains operational for sending and/or receiving data.