Antenna unit and radio base station therewith

Details Antenna unit and radio base station therewith Antenna unit and radio base station therewith

2007-04-10

2007-04-10

Feild, Joseph (Department: 2617)

Telecommunications

Transmitter and receiver at separate stations

Having measuring, testing, or monitoring of system or part

C455S067160, C455S067110, C455S226100, C342S174000, C342S442000

Reexamination Certificate

active

10674455

ABSTRACT:
Phase and amplitude deviations, which are generated, for example, by cables connecting an array antenna of a CDMA base station and the base station, are calibrated in the baseband.The base station comprises: an antenna apparatus1; couplers2; an RF unit3that converts a receive signal to a baseband signal, converts a transmit signal to a radio frequency, and performs power control; an A/D converter4for converting a receive signal to a digital signal; a receive beam form unit6that multiplies the receive signal by semi-fixed weight; a despreader7for this signal input; a time-space demodulator8for demodulating user data; a despreader9for probe signal; a space modulator14for user data; a spreader13for user signal; a channel combiner12; a Tx calibrater11for controlling calibration of a signal; a D/A converter10; a unit16for calculation of correlation matrix for generating a probe signal used for controlling an Rx calibration system and a TX calibration system; a spreader17for probe signal; a power control unit18; a D/A converter19; an RF unit20for probe signal; an A/D converter21for signal from the couplers2; and a despreader22.

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