Pre-coding/pre-decoding method and apparatus for data transmission in mobile communication system
AssigneesSamsung Electronics Co., Ltd., Beijing Samsung Telecom R&D Center
InventorsLei ZHOU, Xufeng ZHENG, Zheng ZHAO
Life of this patent
Estimating the term…
Abstract
A pre-coding/decoding method and apparatus for data transmission between a transmitting end and a receiving end is provided. The pre-coding method for data transmission through Time Division Duplexing (TDD) in a mobile communication system includes estimating downlink channel state information based on an uplink sounding signal, and pre-coding a data symbol and a reference signal based on the estimated downlink channel state information.
Claims35
A pre-coding method for data transmission through Time Division Duplexing (TDD) in a mobile communication system, the method comprising:
- estimating downlink channel state information based on an uplink sounding signal;
- and
- pre-coding a data symbol and a reference signal based on the estimated downlink channel state information.
A pre-decoding method for data transmission through Time Division Duplexing (TDD) in a mobile communication system, the method comprising:
- transmitting an uplink sounding signal on a specific frame;
- pre-decoding a data symbol included in a next frame of the specific frame;
- and
- compensating for a difference between uplink and downlink channels on the pre-decoded data symbol based on a reference signal included in the next frame.
A pre-coding apparatus for data transmission through Time Division Duplexing (TDD) in a mobile communication system, the apparatus comprising:
- a channel estimator for estimating downlink channel state information based on an uplink sounding signal;
- and
- a pre-coder for pre-coding a data symbol and a reference signal based on the estimated downlink channel state information.
A pre-decoding apparatus for data transmission through Time Division Duplexing (TDD) in a mobile communication system, the apparatus comprising:
- a transmitter for transmitting an uplink sounding signal on a specific frame;
- a pre-decoder for pre-decoding a data symbol included in a next frame of the specific frame;
- and
- an uplink/downlink channel difference compensator for compensating for a difference between uplink and downlink channels on the pre-decoded data symbol based on a reference signal included in the next frame.
A mobile communication system, comprising:
- a transmitting end for estimating downlink channel state information based on an uplink sounding signal, for pre-coding a data symbol and a downlink sounding signal based on the estimated downlink channel state information, and for transmitting the pre-coded data symbol and downlink sounding signal;
- and
- a receiving end for transmitting the uplink sounding signal to the transmitting end, for pre-decoding the data symbol, for receiving the pre-coded data symbol and downlink sounding signal transmitted from the transmitting end, and for compensating for a difference between uplink and downlink channels on the pre-decoded data symbol based on the downlink sounding signal.
Dependencies are inferred from the claim text.