Mobile communication apparatus with multiple transmission...

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail

Reexamination Certificate

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Details

C455S069000, C370S334000

Reexamination Certificate

active

07471963

ABSTRACT:
A mobile communication apparatus with multiple transmission and reception antennas and a mobile communication method therefor are provided. In the mobile communication apparatus including a base station and a mobile station, the base station with at least one transmission antenna restores long-term information, short-term information, a signal to interference and noise ratio (SINR) from a feedback signal received from the mobile station, spatially processes dedicated physical channel (DPCH) signals using basis information generated from the restored long-term information, short-term information, and SINR, and transmits the results of adding pilot channel (PICH) signals to the spatially processed results to the mobile station. The mobile station with at least one reception antenna determines a first characteristic corresponding to the channel downlink characteristic for each of the transmission and reception antennas, from the PICH signals transmitted from the base station, determines the long-term information, the short-term information, and downlink power control information including the SINR, which reflect the first characteristic, converts the determined long-term information, short-term information, and downlink power control information into the feedback signal, and transmits the feedback signal to the base station.

REFERENCES:
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patent: 0 905 920 (1999-03-01), None
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patent: 2003/234693 (2003-08-01), None
Siemens, Advanced closed loop Tx diversity concept (eigenbeamformer), Jul. 2000, 3GPP TSG RAN WG 1, pp. 1-12.
Hemanth Sampath “Linear Precoding And Decoding For Multiple Input Multiple Output (MIMO) Wireless Channels”, A Dissertation Submitted to the Dept. of Electrical Engineering & The Committee on Graduate studies of Stanford University, Apr. 2001.
Andrea J. Goldsmith and Soon-Ghee Chua, “Variable-Rate Variable-Power MQAM for Fading Channels”, 1997 IEEE, vol. 45, No. 10, Oct. 1997, pp. 1218-1230.
European Search Report dated Nov. 20, 2003 issued in a counterpart application, namely, Appln. No. 03252194.0.
3GPP TSG RAN WG2, Las Vegas, USA, Feb. 27-Mar. 2, 2001, Description of the eigenbeamformer concept (update) and performance evaluation, pp. 1-9.

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