OFDM CHANNEL ESTIMATION SYSTEM AND METHOD COMPONENTS

    公开(公告)号:US20110182340A1

    公开(公告)日:2011-07-28

    申请号:US13004313

    申请日:2011-01-11

    IPC分类号: H04B17/00

    摘要: Channel estimation for high mobility OFDM channels is achieved by identifying a set of channel path delays from an OFDM symbol stream including carrier data, inter-channel interference noise and channel noise; determining the average channel impulse response for the identified set of channel path delays in each symbol; generating a path delay curvature for each channel path delay in each symbol based on stored average channel impulse responses for the identified channel path delays; estimating the carrier data in the symbols in the OFDM symbol stream in the presence of inter-channel interference noise and channel noise from the OFDM symbol steam and the average impulse responses for the identified channel path delays; reconstructing the inter-channel interference noise in response to the path delay curvature, the identified set of channel path delays and estimated carrier data to produce a symbol stream of carrier data and channel noise with suppressed inter-channel interference noise.

    OFDMCHANNEL ESTIMATION SYSTEM AND METHOD COMPONENTS
    3.
    发明申请
    OFDMCHANNEL ESTIMATION SYSTEM AND METHOD COMPONENTS 审中-公开
    OFDM信道估计系统和方法组件

    公开(公告)号:US20110103453A1

    公开(公告)日:2011-05-05

    申请号:US13004326

    申请日:2011-01-11

    IPC分类号: H04L27/01 H04L27/28

    摘要: Channel estimation for high mobility OFDM channels is achieved by identifying a set of channel path delays from an OFDM symbol stream including carrier data, inter-channel interference noise and channel noise; determining the average channel impulse response for the identified set of channel path delays in each symbol; generating a path delay curvature for each channel path delay in each symbol based on stored average channel impulse responses for the identified channel path delays; estimating the carrier data in the symbols in the OFDM symbol stream in the presence of inter-channel interference noise and channel noise from the OFDM symbol steam and the average impulse responses for the identified channel path delays; reconstructing the inter-channel interference noise in response to the path delay curvature, the identified set of channel path delays and estimated carrier data to produce a symbol stream of carrier data and channel noise with suppressed inter-channel interference noise.

    摘要翻译: 通过从包括载波数据,信道间干扰噪声和信道噪声的OFDM符号流识别一组信道路径延迟来实现高移动性OFDM信道的信道估计; 确定每个符号中所识别的信道路径延迟集合的平均信道脉冲响应; 基于所识别的信道路径延迟的所存储的平均信道脉冲响应,为每个符号中的每个信道路径延迟生成路径延迟曲率; 在存在来自OFDM符号蒸汽的信道间干扰噪声和信道噪声以及所识别的信道路径延迟的平均脉冲响应的情况下,估计OFDM符号流中的符号中的载波数据; 响应于路径延迟曲率重建信道间干扰噪声,识别出的信道路径延迟集合和估计的载波数据,以产生具有抑制的信道间干扰噪声的载波数据和信道噪声的符号流。

    OFDM CHANNEL ESTIMATION SYSTEM AND METHOD COMPONENTS

    公开(公告)号:US20110103450A1

    公开(公告)日:2011-05-05

    申请号:US13004305

    申请日:2011-01-11

    IPC分类号: H04B17/00

    摘要: Channel estimation for high mobility OFDM channels is achieved by identifying a set of channel path delays from an OFDM symbol stream including carrier data, inter-channel interference noise and channel noise; determining the average channel impulse response for the identified set of channel path delays in each symbol; generating a path delay curvature for each channel path delay in each symbol based on stored average channel impulse responses for the identified channel path delays; estimating the carrier data in the symbols in the OFDM symbol stream in the presence of inter-channel interference noise and channel noise from the OFDM symbol steam and the average impulse responses for the identified channel path delays; reconstructing the inter-channel interference noise in response to the path delay curvature, the identified set of channel path delays and estimated carrier data to produce a symbol stream of carrier data and channel noise with suppressed inter-channel interference noise.

    Channel estimation system and method
    5.
    发明申请
    Channel estimation system and method 有权
    信道估计系统和方法

    公开(公告)号:US20080095275A1

    公开(公告)日:2008-04-24

    申请号:US11789180

    申请日:2007-04-24

    IPC分类号: H04L27/00

    摘要: Channel estimation for high mobility OFDM channels is achieved by identifying a set of channel path delays from an OFDM symbol stream including carrier data, inter-channel interference noise and channel noise; determining the average channel impulse response for the identified set of channel path delays in each symbol; storing the average channel impulse responses for the identified channel path delays; generating a path delay curvature for each channel path delay in each symbol based on stored average channel impulse responses for the identified channel path delays; estimating the carrier data in the symbols in the OFDM symbol stream in the presence of inter-channel interference noise and channel noise from the OFDM symbol steam and the average impulse responses for the identified channel path delays; reconstructing the inter-channel interference noise in response to the path delay curvature, the identified set of channel path delays and estimated carrier data; and subtracting the reconstructed inter-channel interference noise from the OFDM symbol stream to produce a symbol stream of carrier data and channel noise with suppressed inter-channel interference noise.

    摘要翻译: 通过从包括载波数据,信道间干扰噪声和信道噪声的OFDM符号流识别一组信道路径延迟来实现高移动性OFDM信道的信道估计; 确定每个符号中所识别的信道路径延迟集合的平均信道脉冲响应; 存储所识别的信道路径延迟的平均信道脉冲响应; 基于所识别的信道路径延迟的所存储的平均信道脉冲响应,为每个符号中的每个信道路径延迟生成路径延迟曲率; 在存在来自OFDM符号蒸汽的信道间干扰噪声和信道噪声以及所识别的信道路径延迟的平均脉冲响应的情况下,估计OFDM符号流中的符号中的载波数据; 响应于路径延迟曲率,所识别的信道路径延迟集合和估计的载波数据来重构信道间干扰噪声; 并且从OFDM符号流中减去重建的信道间干扰噪声,以产生具有抑制的信道间干扰噪声的载波数据和信道噪声的符号流。

    Equalization for OFDM Communication
    6.
    发明申请
    Equalization for OFDM Communication 有权
    OFDM通信均衡

    公开(公告)号:US20110026577A1

    公开(公告)日:2011-02-03

    申请号:US12534359

    申请日:2009-08-03

    IPC分类号: H04L27/01

    摘要: The problem of inefficient channel impulse-response processing is addressed by processing different parts of a channel impulse response to accurately locate channel taps, and to generate more than one set of equalization coefficients. This allows the most-suited equalization coefficient to be selected based on a selection criterion.

    摘要翻译: 通过处理信道脉冲响应的不同部分来精确地定位信道抽头并产生多于一组的均衡系数来解决低效率信道脉冲响应处理的问题。 这允许基于选择标准来选择最合适的均衡系数。

    OFDM channel estimation system and method components
    7.
    发明申请
    OFDM channel estimation system and method components 审中-公开
    OFDM信道估计系统和方法组件

    公开(公告)号:US20080095256A1

    公开(公告)日:2008-04-24

    申请号:US11978841

    申请日:2007-10-30

    IPC分类号: H04K1/10

    摘要: Channel estimation for high mobility OFDM channels is achieved by identifying a set of channel path delays from an OFDM symbol stream including carrier data, inter-channel interference noise and channel noise; determining the average channel impulse response for the identified set of channel path delays in each symbol; generating a path delay curvature for each channel path delay in each symbol based on stored average channel impulse responses for the identified channel path delays; estimating the carrier data in the symbols in the OFDM symbol stream in the presence of inter-channel interference noise and channel noise from the OFDM symbol steam and the average impulse responses for the identified channel path delays; reconstructing the inter-channel interference noise in response to the path delay curvature, the identified set of channel path delays and estimated carrier data to produce a symbol stream of carrier data and channel noise with suppressed inter-channel interference noise.

    摘要翻译: 通过从包括载波数据,信道间干扰噪声和信道噪声的OFDM符号流识别一组信道路径延迟来实现高移动性OFDM信道的信道估计; 确定每个符号中所识别的信道路径延迟集合的平均信道脉冲响应; 基于所识别的信道路径延迟的所存储的平均信道脉冲响应,为每个符号中的每个信道路径延迟生成路径延迟曲率; 在存在来自OFDM符号蒸汽的信道间干扰噪声和信道噪声以及所识别的信道路径延迟的平均脉冲响应的情况下,估计OFDM符号流中的符号中的载波数据; 响应于路径延迟曲率重建信道间干扰噪声,识别出的信道路径延迟集合和估计的载波数据,以产生具有抑制的信道间干扰噪声的载波数据和信道噪声的符号流。

    OFDM channel estimation system and method components
    8.
    发明授权
    OFDM channel estimation system and method components 有权
    OFDM信道估计系统和方法组件

    公开(公告)号:US08761277B2

    公开(公告)日:2014-06-24

    申请号:US13004313

    申请日:2011-01-11

    IPC分类号: H04K1/10 H04L27/28

    摘要: Channel estimation for high mobility OFDM channels is achieved by identifying a set of channel path delays from an OFDM symbol stream including carrier data, inter-channel interference noise and channel noise; determining the average channel impulse response for the identified set of channel path delays in each symbol; generating a path delay curvature for each channel path delay in each symbol based on stored average channel impulse responses for the identified channel path delays; estimating the carrier data in the symbols in the OFDM symbol stream in the presence of inter-channel interference noise and channel noise from the OFDM symbol steam and the average impulse responses for the identified channel path delays; reconstructing the inter-channel interference noise in response to the path delay curvature, the identified set of channel path delays and estimated carrier data to produce a symbol stream of carrier data and channel noise with suppressed inter-channel interference noise.

    摘要翻译: 通过从包括载波数据,信道间干扰噪声和信道噪声的OFDM符号流识别一组信道路径延迟来实现高移动性OFDM信道的信道估计; 确定每个符号中所识别的信道路径延迟集合的平均信道脉冲响应; 基于所识别的信道路径延迟的所存储的平均信道脉冲响应,为每个符号中的每个信道路径延迟生成路径延迟曲率; 在存在来自OFDM符号蒸汽的信道间干扰噪声和信道噪声以及所识别的信道路径延迟的平均脉冲响应的情况下,估计OFDM符号流中的符号中的载波数据; 响应于路径延迟曲率重建信道间干扰噪声,识别出的信道路径延迟集合和估计的载波数据,以产生具有抑制的信道间干扰噪声的载波数据和信道噪声的符号流。

    OFDM CHANNEL ESTIMATION SYSTEM AND METHOD COMPONENTS
    9.
    发明申请
    OFDM CHANNEL ESTIMATION SYSTEM AND METHOD COMPONENTS 审中-公开
    OFDM信道估计系统和方法组件

    公开(公告)号:US20110182374A1

    公开(公告)日:2011-07-28

    申请号:US13004337

    申请日:2011-01-11

    IPC分类号: H04L27/28

    摘要: Channel estimation for high mobility OFDM channels is achieved by identifying a set of channel path delays from an OFDM symbol stream including carrier data, inter-channel interference noise and channel noise; determining the average channel impulse response for the identified set of channel path delays in each symbol; generating a path delay curvature for each channel path delay in each symbol based on stored average channel impulse responses for the identified channel path delays; estimating the carrier data in the symbols in the OFDM symbol stream in the presence of inter-channel interference noise and channel noise from the OFDM symbol steam and the average impulse responses for the identified channel path delays; reconstructing the inter-channel interference noise in response to the path delay curvature, the identified set of channel path delays and estimated carrier data to produce a symbol stream of carrier data and channel noise with suppressed inter-channel interference noise.

    摘要翻译: 通过从包括载波数据,信道间干扰噪声和信道噪声的OFDM符号流识别一组信道路径延迟来实现高移动性OFDM信道的信道估计; 确定每个符号中所识别的信道路径延迟集合的平均信道脉冲响应; 基于所识别的信道路径延迟的所存储的平均信道脉冲响应,为每个符号中的每个信道路径延迟生成路径延迟曲率; 在存在来自OFDM符号蒸汽的信道间干扰噪声和信道噪声以及所识别的信道路径延迟的平均脉冲响应的情况下,估计OFDM符号流中的符号中的载波数据; 响应于路径延迟曲率重建信道间干扰噪声,识别出的信道路径延迟集合和估计的载波数据,以产生具有抑制的信道间干扰噪声的载波数据和信道噪声的符号流。

    Channel estimation system and method
    10.
    发明授权
    Channel estimation system and method 有权
    信道估计系统和方法

    公开(公告)号:US07830994B2

    公开(公告)日:2010-11-09

    申请号:US11789180

    申请日:2007-04-24

    摘要: Channel estimation for high mobility OFDM channels is achieved by identifying a set of channel path delays from an OFDM symbol stream including carrier data, inter-channel interference noise and channel noise; determining the average channel impulse response for the identified set of channel path delays in each symbol; storing the average channel impulse responses for the identified channel path delays; generating a path delay curvature for each channel path delay in each symbol based on stored average channel impulse responses for the identified channel path delays; estimating the carrier data in the symbols in the OFDM symbol stream in the presence of inter-channel interference noise and channel noise from the OFDM symbol stream and the average impulse responses for the identified channel path delays; reconstructing the inter-channel interference noise in response to the path delay curvature, the identified set of channel path delays and estimated carrier data; and subtracting the reconstructed inter-channel interference noise from the OFDM symbol stream to produce a symbol stream of carrier data and channel noise with suppressed inter-channel interference noise.

    摘要翻译: 通过从包括载波数据,信道间干扰噪声和信道噪声的OFDM符号流识别一组信道路径延迟来实现高移动性OFDM信道的信道估计; 确定每个符号中所识别的信道路径延迟集合的平均信道脉冲响应; 存储所识别的信道路径延迟的平均信道脉冲响应; 基于所识别的信道路径延迟的所存储的平均信道脉冲响应,为每个符号中的每个信道路径延迟生成路径延迟曲率; 在存在来自OFDM符号流的信道间干扰噪声和信道噪声以及所识别的信道路径延迟的平均脉冲响应的情况下,估计OFDM符号流中的符号中的载波数据; 响应于路径延迟曲率,所识别的信道路径延迟集合和估计的载波数据来重构信道间干扰噪声; 并且从OFDM符号流中减去重建的信道间干扰噪声,以产生具有抑制的信道间干扰噪声的载波数据和信道噪声的符号流。