Method and device for radio reception using an antenna tuning apparatus and a plurality of antennas

摘要

A receiver for radio communication comprises: four antennas; an antenna tuning apparatus for simultaneously tuning the four antennas, the antenna tuning apparatus comprising adjustable impedance devices, each of the adjustable impedance devices having a reactance at a frequency, the reactance of any one of the adjustable impedance devices being adjustable by electrical means; four single-input and single-output low-noise amplifiers; four analog processing and conversion circuits; a multiple-input signal processing device delivering a signal to a destination, the multiple-input signal processing device delivering a tuning instruction; a tuning control unit, the tuning control unit receiving the tuning instruction from the multiple-input signal processing device, the tuning control unit delivering tuning control signals to the antenna tuning apparatus as a function of the tuning instruction.

主权项

1. A method for radio reception with multiple antennas in a given frequency band, using N antennas, where N is an integer greater than or equal to 2, the method comprising the steps of:
tuning n antennas among the N antennas, where n is an integer greater than or equal to 2 and less than or equal to N, using an antenna tuning apparatus comprising n antenna ports, m user ports, where m is an integer greater than or equal to 2, and p adjustable impedance devices, where p is an integer greater than or equal to 2m, each of the adjustable impedance devices having a reactance at a frequency in the given frequency band, the reactance of any one of the adjustable impedance devices being adjustable by electrical means, each of the user ports delivering a signal; processing m digital signals, each of the digital signals being mainly determined by one and only one of the signals delivered by the user ports, to estimate one or more quantities representative of a channel matrix between a plurality of signals sent by a transmitter and the m signals delivered by the user ports, and to deliver a tuning instruction as a function of said one or more quantities representative of a channel matrix; using the tuning instruction to obtain a plurality of tuning control signals, the reactance of each of the adjustable impedance devices being mainly determined by one or more of the tuning control signals.