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1. US20100093282 - Multi-transceiver architecture for advanced Tx antenna monitoring and calibration in MIMO and smart antenna communication systems

Office United States of America
Application Number 12252166
Application Date 15.10.2008
Publication Number 20100093282
Publication Date 15.04.2010
Grant Number 08045926
Grant Date 25.10.2011
Publication Kind B2
IPC
H04B 15/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
15Suppression or limitation of noise or interference
H04B 17/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
17Monitoring; Testing
Applicants Nokia Siemens Networks Oy
Inventors Martikkala Risto
Heinikoski Kauko
Adolfsen Pekka
Title
(EN) Multi-transceiver architecture for advanced Tx antenna monitoring and calibration in MIMO and smart antenna communication systems
Abstract
(EN)

Exemplary embodiments of system and method are provided for measuring signal amplitude, phase and/or delay offsets between multiple transmit signals fed through the transmit signal processing chains and wirelessly transmitted over the transceive antennas of separate transceiver modules, wherein transmit signal coupling between the transmit antennas of said transceiver modules' transmit signal processing chains may be used for synchronizing the transmit signals and calibrating their amplitude, phase and/or delay parameters. The exemplary embodiments further provide a front end arrangement of a wireless transceiver device which can comprise at least two independently controllable transceiver modules, each connected to an associated spatial diversity transceive antenna and comprising at least one associated transmit signal processing chain and at least one associated receive signal processing chain coupled to a common baseband processing unit. The exemplary transceiver architecture can be executed on an antenna loop between the transmit signal processing chain of a first transceiver module and the transmit signal processing chain of a second transceiver over the air interface and relies on an adaptive antenna concept which facilitates a wireless transmission of data via a plurality of wireless communication channels utilizing an array of transceive antennas, receiving feedback information via at least one of said communication channels using such antenna loop and modifying a transmission mode based on the received feedback information.