Calibration method for non-ideal transceivers

A system for 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 system comprising:

• means for generating a signal comprising at least one training symbol as part of a data package to be transmitted;
• means for up-converting with a first frequency the signal to a first signal in the first up-conversion transmitter;
• means for transferring the data package comprising the first signal from the up-conversion transmitter to the first down-conversion receiver;
• means for 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;
• means for detecting the at least one training symbol in the second signal;
• and
• means for separating, in the frequency domain, the first spectral component of the at least one detected training symbol for determining the at least one transmitter non-ideality characteristic and means for separating the second spectral component of the at least one detected training symbol for determining at least one receiver non-ideality characteristic,
• wherein the system determines the at least one transmitter non-ideality characteristic or at least one receiver non-ideality characteristic while the transceiver remains operational for sending and/or receiving data.

A system for determining transmitter and receiver non-ideality characteristics introduced on a signal by a transceiver, the transceiver comprising a first an up-conversion transmitter and a first down-conversion receiver, the system comprising:

• a generating unit configured to generate a signal comprising at least one training symbol as part of a data package to be transmitted;
• an up-converting unit configured to up-convert with a first frequency the signal to a first signal in the first up-conversion transmitter;
• a transferring unit configured to transfer the data package comprising the first signal from the first up-conversion transmitter to the first down-conversion receiver;
• a down-converting unit configured to down-convert 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;
• a detecting unit configured to detect the at least one training symbol in the second signal;
• and
• a separating unit configured to separate, in the frequency domain, the first spectral component of the at least one detected training symbol for determining the at least one transmitter non-ideality characteristic and separate the second spectral component of the at least one detected training symbol for determining the at least one receiver non-ideality characteristic;
• wherein the system determines at least one transmitter non-ideality characteristic or at least one receiver non-ideality characteristics while the transceiver remains operational for sending and/or receiving data.