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    • 7. 发明授权
    • Echo cancellation and echo channel estimation system using multiple antennas
    • 使用多个天线的回波消除和回波信道估计系统
    • US08184737B2
    • 2012-05-22
    • US12137697
    • 2008-06-12
    • Yong-Hoon LeeJin-Gon JoungEui-Rim Jeong
    • Yong-Hoon LeeJin-Gon JoungEui-Rim Jeong
    • H04B15/00
    • H04B7/015H04B7/04H04L5/0007H04L25/0224
    • Disclosed herein is an echo cancellation and echo channel estimation system that can relay transmit signals without interference with echo signals by canceling the undesired echo signals received by a relay. The echo cancellation and echo channel estimation system is designed to relay signals between a transmitter and a receiver through a relay using multiple antennas. The echo cancellation and echo channel estimation system includes a receive antenna, a preprocessing vector generation module, an echo cancellation module, and a transmit array antenna. The receive antenna receives a transmit signal from the transmitter and an echo signal via an echo channel. The preprocessing vector generation module generates a preprocessing vector and applies the preprocessing vector, the transmit signal and the echo signal, received from the receive antenna, to the echo cancellation module. The echo cancellation module cancels only the echo signal by multiplying the preprocessing vector, the transmit signal, and the echo signal. The transmit array antenna receives a retransmit signal from the echo cancellation module and resends the retransmit signal to the receiver.
    • 本文公开了一种回波消除和回波信道估计系统,其可以通过消除由继电器接收到的不期望的回波信号来中继发射信号而不干扰回波信号。 回波消除和回波信道估计系统被设计成通过使用多个天线的中继站在发射机和接收机之间中继信号。 回波消除和回波信道估计系统包括接收天线,预处理向量生成模块,回波消除模块和发射阵列天线。 接收天线通过回波信道接收来自发射机的发射信号和回波信号。 预处理向量生成模块生成预处理向量,并且将从接收天线接收的预处理向量,发送信号和回波信号应用于回声消除模块。 回波消除模块通过将预处理矢量,发射信号和回波信号相乘来仅消除回波信号。 发射阵列天线从回波消除模块接收重传信号,并将重传信号重发到接收机。