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1. (WO2010115701) A RADIO SYSTEM AND A METHOD FOR RELAYING RADIO SIGNALS

Pub. No.:    WO/2010/115701    International Application No.:    PCT/EP2010/053703
Publication Date: Fri Oct 15 01:59:59 CEST 2010 International Filing Date: Tue Mar 23 00:59:59 CET 2010
IPC: H04B 17/00
H01Q 3/26
H04W 88/08
H03F 1/32
Applicants: UBIDYNE INC.
KENINGTON, Peter
Inventors: KENINGTON, Peter
Title: A RADIO SYSTEM AND A METHOD FOR RELAYING RADIO SIGNALS
Abstract:
The present invention provides a radio system (1) and a method (800) for relaying radio signals. The radio system (1) and the method (800) provide a calibration of transmit radio signals in which no dedicated calibration signal generator is required for calibrating the radio system (1). The radio system (1) comprises at least one transmit path, a calibration unit (200) at the least one link (15-1, 15-2,...,15-N). A coupled transmit signal is (90-1, 90- 2,..., 90-N) is extracted from the transmit paths (70-1, 70-2,..., 70-N) and selectively forwarded as a feedback signal (90F) to a feedback signal demodulator (410). The feedback signal demodulator (410) generates a base band feedback signal (90B) adapted for updating phase and amplitude changes (210-1, 210-2,..., 210-N) applied a calibrated payload signal (18-1, 18-2,..., 18-N).