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    • 1. 发明申请
    • RECEIVER, INTEGRATED CIRCUIT, DIGITAL TELEVISION RECEIVER, RECEPTION METHOD, AND RECEPTION PROGRAM
    • 接收机,集成电路,数字电视接收机,接收方式和接收方案
    • US20100177251A1
    • 2010-07-15
    • US12602672
    • 2009-04-08
    • Tomohiro KimuraRyosuke Mori
    • Tomohiro KimuraRyosuke Mori
    • H04N5/455H04L27/06
    • H04L27/2647H04L25/021H04L25/022H04L25/0232H04L2025/03414H04N21/4382H04N21/44209H04N21/6112
    • A receiver receives an OFDM signal and performs the Fourier transform on the received OFDM signal. In the receiver, a first channel estimation subunit 30 estimates channel characteristics at SP signal positions and interpolates the estimated channel characteristics in the time direction, whereas a second channel estimation subunit 40 estimates channel characteristics at TMCC signal positions. A correlation calculation subunit 50 performs an autocorrelation calculation on the output from the first channel estimation subunit 30, and performs a cross-correlation calculation on the output from the first channel estimation subunit 30 and the output from the second channel estimation subunit 40. By using the results of the autocorrelation calculation and the cross-correlation calculation performed by the correlation calculation subunit 50, a control subunit 60 controls a transfer function of an interpolation filter in a frequency interpolation subunit 70.
    • 接收机接收OFDM信号并对所接收的OFDM信号进行傅里叶变换。 在接收机中,第一信道估计子单元30估计SP信号位置的信道特性,并且在时间方向内插估计的信道特性,而第二信道估计子单元40估计TMCC信号位置的信道特性。 相关计算子单元50对第一信道估计子单元30的输出进行自相关运算,对第一信道估计子单元30的输出和第二信道估计子单元40的输出进行互相关运算。通过使用 由相关计算子单元50执行的自相关计算和互相关计算的结果,控制子单元60控制频率插值子单元70中的内插滤波器的传递函数。
    • 2. 发明授权
    • Receiver, integrated circuit, digital television receiver, reception method, and reception program
    • 接收机,集成电路,数字电视接收机,接收方式和接收方案
    • US08340220B2
    • 2012-12-25
    • US12602672
    • 2009-04-08
    • Tomohiro KimuraRyosuke Mori
    • Tomohiro KimuraRyosuke Mori
    • H03K9/00H04L27/00
    • H04L27/2647H04L25/021H04L25/022H04L25/0232H04L2025/03414H04N21/4382H04N21/44209H04N21/6112
    • A receiver receives an OFDM signal and performs the Fourier transform on the received OFDM signal. In the receiver, a first channel estimation subunit estimates channel characteristics at SP signal positions and interpolates the estimated channel characteristics in the time direction, whereas a second channel estimation subunit estimates channel characteristics at TMCC signal positions. A correlation calculation subunit performs an autocorrelation calculation on the output from the first channel estimation subunit, and performs a cross-correlation calculation on the output from the first channel estimation subunit and the output from the second channel estimation subunit. By using the results of the autocorrelation calculation and the cross-correlation calculation performed by the correlation calculation subunit, a control subunit controls a transfer function of an interpolation filter in a frequency interpolation subunit.
    • 接收机接收OFDM信号并对所接收的OFDM信号进行傅里叶变换。 在接收机中,第一信道估计子单元估计SP信号位置的信道特性,并在时间方向内插估计的信道特性,而第二信道估计子单元估计TMCC信号位置的信道特性。 相关计算子单元对第一信道估计子单元的输出进行自相关运算,对第一信道估计子单元的输出和第二信道估计子单元的输出进行互相关计算。 通过使用相关计算子单元进行的自相关计算和互相关计算的结果,控制子单元控制频率插值子单元中的内插滤波器的传递函数。