US 2002/0172269 A1 · METHOD AND SYSTEM FOR EFFECTIVE CHANNEL ESTIMATION IN A TELECOMMUNICATION SYSTEM

Abstract

A method and system is provided for estimating a first wireless communication channel (FWCC) transmitting a data stream from a first antenna system (FAS) to a second antenna system (SAS) in a telecommunication system, the telecommunication system having a second wireless communication channel (SWCC) for transmitting data from the MT to the antenna. First, one or more characteristics of the SWCC (SWCC Characteristics) are analyzed based on the data stream received by the antenna system from the MT. From the data stream received, an initial condition of the FWCC is also extracted. One or more characteristics of the FWCC (FWCC Characteristics) are predicted based on the SWCC Characteristics and the extracted initial condition, wherein analyzing the SWCC Characteristic and estimating the FWCC Characteristics relying on the feature that the data stream has a plurality of data segments whose Doppler frequencies are close to each other to an extent that the Doppler frequencies are deemed as the same for the purpose of analyzing the SWCC Characteristics.

Claims44

Dependent claims

A method for estimating a first wireless communication channel (FWCC) transmitting data from a first antenna system (FAS) to a second antenna system (SAS) in a telecommunication system, the telecommunication system having a second wireless communication channel (SWCC) for transmitting data from the SAS to FAS, the method comprising:

analyzing one or more characteristics of the SWCC (SWCC Characteristics) based on a data stream received by FAS from the SAS;
extracting an initial condition of the FWCC from the data received;
and
predicting one or more characteristics of the FWCC (FWCC Characteristics) based on the analyzed SWCC Characteristics and the extracted initial condition of the FWCC.

1 more element

A method for channel estimation for a telecommunication system using an antenna array, the antenna array containing a plurality of antenna subsystems, the method comprising:

analyzing one or more characteristics of a wireless communication uplink channel (Uplink Channel Characteristics) based on data received by all antenna subsystems from a mobile terminal (MT);
extracting information for an initial condition of a wireless communication downlink channel;
and
predicting one or more characteristics the wireless communication downlink channel (Downlink Channel Characteristics) based on the Uplink Channel Characteristics and the extracted initial condition of the downlink channel,
wherein the wireless communication uplink channel transmits data from the MT to the antenna array, and the wireless communication downlink channel transmits data from the antenna array to the MT, and
wherein the step of analyzing and predicting utilizing a common feature that a Doppler frequency of each mobile channel established between an antenna subsystem and the MT is close to that of other mobile channels between other antenna subsystems and the MT to the extent that all the Doppler frequencies are deemed as the same frequency.

3 more elements

Dependencies are inferred from the claim text.

Method and system for effective channel estimation in a telecommunication system

Life of this patent

Method and system for effective channel estimation in a telecommunication system

Life of this patent

Abstract

Claims44