Telefonaktiebolaget Lm Ericsson (publ)

Harald Thomas

Walter Kodim

Herbert Dingfelder

Roman Gloeckler

To maintain a receiving sub-system in a multiple standard communication device fully operational according to all operation modes of a second transmitting sub-system of the multiple communication device it is proposed that a multiple standard communication device of the type with parallel operation comprises a first subunit at least receiving input signals at a predetermined input level, and a second subunit at least transmitting output signals at a specific time, frequency and output level such that the output level is very large compared to the input level of the first subunit. According to the present invention the operation mode of the first subunit is modified when the second subunit is transmitting output signals.

Parallel operation of devices using multiple communication standards

The invention compensates for any interference from a mobile communication unit to a positioning receiver unit in a multiple standard communication device with mobile communication and localization functionality. A first sub-unit receives input signals at a predetermined input level. A second sub-unit transmits output signals at an output level that is large compared to the input level of the first sub-unit. A branch-off unit branches off a part of the output signal before the antenna of the second sub-unit. An interference suppression unit receives the branch-off part of the output signal and derives an interference compensation signal therefrom through attenuation and subsequent phase shifting. The interference compensation signal is supplied to a superposition unit that also receives the input signal of the first sub-unit.

RECEPTION OF WEAK RADIO FREQUENCY SIGNAL IN THE PRESENCE OF A STRONG INTERNAL RADIO FREQUENCY INTERFERER&mdash;DEVICE AND METHOD FOR COMPENSATION OF AN INTERNAL INTERFERING SIGNAL BY A SUPERPOSITION METHOD

Growing community of inventors

Nürnberg, Germany

Harald Thomas