公开(公告)号：US20100150217A1

公开(公告)日：2010-06-17

申请号：US12633329

申请日：2009-12-08

申请人： Hye Kyung JWA ,  Il Gyu KIM ,  Hyun Kyu CHUNG ,  Seung Chan BANG

发明人： Hye Kyung JWA ,  Il Gyu KIM ,  Hyun Kyu CHUNG ,  Seung Chan BANG

IPC分类号： H04B17/00 ,  H04L27/28

CPC分类号： H04L25/022 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0232 ,  H04L27/2647

摘要： Provided are a channel estimation method and apparatus in mobile communication system having dispersed pilot. The channel estimation apparatus includes an entire band channel estimation unit and an edge channel estimation unit. The entire band channel estimation unit performs channel estimation on an entire frequency band. The edge channel estimation unit performs channel estimation on an edge region. By separately performing the gating operation of the entire band channel estimation unit and the gating operation of the edge channel estimation unit, a channel frequency response is more accurately calculated even in an edge region.

摘要翻译： 提供具有分散导频的移动通信系统中的信道估计方法和装置。 信道估计装置包括整个频带信道估计单元和边缘信道估计单元。 整个频带信道估计单元对整个频带执行信道估计。 边缘信道估计单元对边缘区域进行信道估计。 通过分别执行整个频带信道估计单元的门控操作和边缘信道估计单元的选通操作，即使在边缘区域中也可以更准确地计算频道频率响应。

公开(公告)号：US20100075672A1

公开(公告)日：2010-03-25

申请号：US12543560

申请日：2009-08-19

申请人： Hye Kyung JWA ,  Il Gyu KIM ,  Hyun Kyu CHUNG

发明人： Hye Kyung JWA ,  Il Gyu KIM ,  Hyun Kyu CHUNG

IPC分类号： H04W40/06

CPC分类号： H04L1/0026 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0643 ,  H04B7/0645 ,  H04B7/066 ,  H04B7/0689 ,  H04L1/0009 ,  H04L1/0027 ,  H04W88/10

摘要： An operation method of a base station which adaptively determines a downlink transmission mode is provided. The operation method of the base station including: adaptively determining a downlink transmission mode based on at least one of a state of a channel between the base station and a terminal, and a number of receiving antennas, the number of receiving antennas being at least one and the receiving antennas being mounted on the terminal; selecting one of at least one type of feedback information which is fed back by the terminal based on the determined downlink transmission mode; and reporting type information associated with the selected type to the terminal.

摘要翻译： 提供了一种自适应地确定下行链路传输模式的基站的操作方法。 基站的操作方法包括：基于基站和终端之间的信道的状态和接收天线的数量中的至少一个自适应地确定下行链路传输模式，接收天线的数量是至少一个 并且所述接收天线安装在所述终端上; 基于所确定的下行链路传输模式，选择所述终端反馈的至少一种类型的反馈信息中的一种; 以及与所选择的类型相关联的报告类型信息到终端。

公开(公告)号：US20130243130A1

公开(公告)日：2013-09-19

申请号：US13588361

申请日：2012-08-17

申请人： Young Ha LEE ,  Hye Kyung JWA ,  Dae Ho KIM

发明人： Young Ha LEE ,  Hye Kyung JWA ,  Dae Ho KIM

IPC分类号： H04L27/06

CPC分类号： H04L27/2647 ,  H04L25/022 ,  H04L25/0222 ,  H04L25/0232

摘要： Disclosed are a receiving apparatus and a receiving method. More particularly, disclosed are a receiving apparatus and a receiving method in an OFDM system. The receiving apparatus in the OFDM system includes a receiver for receiving wireless signals transmitted through wireless channels, a transformer for transforming the wireless signals into signals of a frequency domain, an inverse transformer for inversely transforming reference signals into signals of a time domain based on a number of reference signals included in the signals of the frequency domain and an arrangement interval of the reference signals included in the signals of the frequency domain, and a determiner for determining a delay spread based on the inversely transformed signals of the time domain.

摘要翻译： 公开了一种接收装置和接收方法。 更具体地，公开了OFDM系统中的接收装置和接收方法。 OFDM系统中的接收装置包括用于接收通过无线信道发送的无线信号的接收机，用于将无线信号变换为频域的信号的变换器，用于将参考信号反向变换为时域信号的逆变换器，其基于 包括在频域的信号中的参考信号的数量和包括在频域的信号中的参考信号的布置间隔，以及用于基于时域的逆变换信号确定延迟扩展的确定器。

公开(公告)号：US20120182895A1

公开(公告)日：2012-07-19

申请号：US13350589

申请日：2012-01-13

申请人： Hye Kyung JWA

发明人： Hye Kyung JWA

IPC分类号： H04W72/04 ,  H04W24/00

CPC分类号： H04W72/046 ,  H04L5/0048 ,  H04L25/0226 ,  H04W24/10

摘要： Provided are apparatus and a method for transmitting and receiving channel state information. The apparatus for transmitting channel state information includes a resource demapper configured to extract at least one of data, a user equipment (UE)-specific reference signal, and a cell-specific reference signal from an orthogonal frequency division multiplexing (OFDM)-demodulated signal, a channel estimation unit configured to estimate a downlink channel on the basis of at least one of the UE-specific reference signal and the cell-specific reference signal, and a channel state information producer configured to produce at least one of a cell-specific channel quality indicator (CQI), a UE-specific CQI, and switched beam selection information on the basis of information on the estimated downlink channel. Accordingly, it is possible to efficiently perform channel adaptive transmission and beamforming-mode transmission in consideration of an actually reflected beamforming gain and interference cancellation gain.

摘要翻译： 提供了发送和接收信道状态信息的装置和方法。 用于发送信道状态信息的装置包括：资源解映射器，被配置为从正交频分复用（OFDM）调制信号中提取数据，用户设备（UE）特定参考信号和小区特定参考信号中的至少一个 信道估计单元，被配置为基于所述UE特定参考信号和所述小区特定参考信号中的至少一个来估计下行链路信道;以及信道状态信息生成器，被配置为产生小区特定 信道质量指示符（CQI），UE特定CQI和切换波束选择信息。 因此，考虑到实际反射的波束形成增益和干扰消除增益，可以有效地执行信道自适应传输和波束成形模式传输。