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    • 6. 发明申请
    • BASE STATION DEVICE
    • 基站装置
    • US20110170527A1
    • 2011-07-14
    • US13003189
    • 2009-06-12
    • Takashi YamamotoYoji Okada
    • Takashi YamamotoYoji Okada
    • H04W88/08
    • H04L27/2657H04L27/2655H04L27/2675H04W56/0015H04W56/0035
    • While a clock generated by a built-in clock generator is used as a reference signal for determining a carrier frequency of a transmit signal, carrier frequency synchronization is achieved between base stations. A base station device is configured to perform wireless communication with a terminal device. In the base station device, accuracy of a carrier frequency of an OFDM signal is affected by accuracy of a clock frequency generated by a built-in clock generator 18. The base station device receives an OFDM signal transmitted from another base station device while transmission to the terminal device is stopped, estimates a carrier frequency offset of the OFDM signal, and corrects a carrier frequency of an OFDM signal to be transmitted to the terminal device.
    • 当由内置时钟发生器产生的时钟用作用于确定发送信号的载波频率的参考信号时,在基站之间实现载波频率同步。 基站装置被配置为执行与终端装置的无线通信。 在基站装置中,OFDM信号的载波频率的精度受到由内置时钟发生器18产生的时钟频率的精度的影响。基站装置接收从另一个基站装置发送的OFDM信号,同时发送到 终端装置停止,估计OFDM信号的载波频率偏移,并校正要发送到终端装置的OFDM信号的载波频率。
    • 7. 发明授权
    • Receiver, transmission method and transmission system
    • 接收机,传输方式和传输系统
    • US07953168B2
    • 2011-05-31
    • US11992047
    • 2006-09-15
    • Hideaki SakaiKazunori HayashiYoji Okada
    • Hideaki SakaiKazunori HayashiYoji Okada
    • H04L27/28
    • H04L25/03057H04L25/0216H04L27/2613H04L2025/0342H04L2025/0349
    • To reduce the influence of inter-block interference even when the order number of the channel (physically corresponding to the impulse response length of the channel) is larger than the CP length. A receiver 20 for a transmission system using a block including a plurality of symbols, comprises a transfer function estimating part 21 which estimates a transfer function of a channel, and an inter-block interference component generating part 24 which generates a replica of an inter-block interference component from a previous block to a current block in accordance with the transfer function h estimated in the transfer function estimating part 21 and a received signal s(n−1) of the previous block, wherein the inter-block interference component of a received signal is reduced by using the replica of the inter-block interference component.
    • 即使当信道的订单号(物理上对应于信道的脉冲响应长度)大于CP长度时,也减少块间干扰的影响。 用于使用包括多个符号的块的传输系统的接收机20包括:估计信道的传递函数的传递函数估计部分21,以及生成部分间的副本的块间干扰分量生成部分24, 根据在传递函数估计部分21中估计的传递函数h和前一块的接收信号s(n-1),从前一块到当前块的块干扰分量,其中块的干扰分量 通过使用块间干扰分量的副本来减少接收信号。
    • 8. 发明申请
    • Receiver, Transmission Mehtod and Transmission System
    • 接收机,传输机制和传输系统
    • US20090268825A1
    • 2009-10-29
    • US11992047
    • 2006-09-15
    • Hideaki SakaiKazunori HayashiYoji Okada
    • Hideaki SakaiKazunori HayashiYoji Okada
    • H04L27/28
    • H04L25/03057H04L25/0216H04L27/2613H04L2025/0342H04L2025/0349
    • To reduce the influence of inter-block interference even when the order number of the channel (physically corresponding to the impulse response length of the channel) is larger than the CP length. A receiver 20 for a transmission system using a block including a plurality of symbols, comprises a transfer function estimating part 21 which estimates a transfer function of a channel, and an inter-block interference component generating part 24 which generates a replica of an inter-block interference component from a previous block to a current block in accordance with the transfer function h estimated in the transfer function estimating part 21 and a received signal s(n−1) of the previous block, wherein the inter-block interference component of a received signal is reduced by using the replica of the inter-block interference component.
    • 即使当信道的订单号(物理上对应于信道的脉冲响应长度)大于CP长度时,也减少块间干扰的影响。 用于使用包括多个符号的块的传输系统的接收机20包括:估计信道的传递函数的传递函数估计部分21,以及生成部分间的副本的块间干扰分量生成部分24, 根据在传递函数估计部分21中估计的传递函数h和前一块的接收信号s(n-1),从前一块到当前块的块干扰分量,其中块的干扰分量 通过使用块间干扰分量的副本来减少接收信号。
    • 10. 发明授权
    • Receiver, transmitter, transmission system, and transmission method
    • 接收机,发射机,传输系统和传输方式
    • US08204465B2
    • 2012-06-19
    • US12298710
    • 2007-04-27
    • Hideaki SakaiKazunori HayashiYoji OkadaTadashi Araki
    • Hideaki SakaiKazunori HayashiYoji OkadaTadashi Araki
    • H04B1/10
    • H04L27/2647H04L25/03159
    • To reduce the affections of noises having greater instantaneous powers than received signals. A receiver of block transmission scheme, in which signal blocks from a transmitting end are received and equalization is performed for each of the received signal blocks, comprises a local noise detecting unit detecting a local noise locally existing in a received signal block and having a greater amplitude than the signals; a local noise eliminating unit generating a local-noise-eliminated received signal block in which the signals in the range where the local noise is existent within the received signal block have been eliminated together with the local noise; and an equalizer that performs an equalization based on the local-noise-eliminated received signal block.
    • 减少具有比接收信号更大的瞬时功率的噪声的影响。 一种块传输方式的接收机,其中接收来自发射端的信号块并对每个接收的信号块执行均衡,该接收机包括本地噪声检测单元,其检测局部存在于接收信号块中的本地噪声并具有较大的 幅度比信号; 产生本地噪声消除的接收信号块的局部噪声消除单元,其中在接收信号块内存在本地噪声的范围内的信号已经与局部噪声一起消除; 以及均衡器,其基于所述局部噪声消除的接收信号块执行均衡。