Method of scaling soft symbols of an uplink enhanced dedicated transport channel (E-DCH) and method for enabling use of a log-map turbo decoding algorithm for processing the E-DCH

Method of scaling soft symbols of an uplink enhanced dedicated transport channel (E-DCH) and method for enabling use of a log-map turbo decoding algorithm for processing the E-DCH

A method of scaling soft symbols of an uplink E-DCH is provided, where the E-DCH is received from a user in a network for processing in a base station receiver in the network employing a log-MAP turbo decoding algorithm to process the E-DCH. The E-DCH includes an E-DPDCH from which the soft symbols...

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Hauptverfasser: NABHANE WALID E, KONG HONGWEI, DOMINIQUE FRANCIS
Format: Patent
Sprache:eng
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ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
SELECTING
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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creator NABHANE WALID E
KONG HONGWEI
DOMINIQUE FRANCIS
description A method of scaling soft symbols of an uplink E-DCH is provided, where the E-DCH is received from a user in a network for processing in a base station receiver in the network employing a log-MAP turbo decoding algorithm to process the E-DCH. The E-DCH includes an E-DPDCH from which the soft symbols are generated at the base station receiver, and an E-DPCCH used to transmit control information associated with the E-DPDCH, which along with configuration information from a radio network controller (RNC) of the network enables the base station receiver to determine a reference amplitude ratio linked to the actual power offset of the E-DPDCH from the legacy DPCCH. In the method, an estimated E-DPDCH to DPCCH amplitude ratio that represents a scaling factor for the soft symbols is determined, and the soft symbols are scaled by the scaling factor to enable the soft symbols to be processed by the log-MAP turbo decoding algorithm in the base station receiver.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
SELECTING
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
title Method of scaling soft symbols of an uplink enhanced dedicated transport channel (E-DCH) and method for enabling use of a log-map turbo decoding algorithm for processing the E-DCH
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