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公开(公告)号：US10771289B2
公开(公告)日：2020-09-08
申请号：US16087822
申请日：2017-03-24
IPC分类号： H04L12/26 , H04L25/02 , H04B17/309 , H04B17/373 , H04B7/0413
摘要： Disclosed is a method, receiver, multi-receiver device, system and computer readable medium for configuring a receiver to perform multi-transmitter channel estimation for a time-varying channel. In one aspect, the method includes: wirelessly receiving at least two frames, each frame including a block of training symbols received at different points in time for a time-varying channel; estimating, for each block at a block location, a first channel coefficient of the time-varying channel, wherein the block location is the same for each block; and interpolating or extrapolating a plurality of second channel coefficients for the respective training symbols of each block based on the respective first channel coefficient.
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公开(公告)号：US20180205425A1
公开(公告)日：2018-07-19
申请号：US15870367
申请日：2018-01-12
IPC分类号： H04B7/0452 , H04B7/0417 , H04B7/06 , H04L25/02
CPC分类号： H04B7/0452 , H04B7/0417 , H04B7/0626 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L25/022 , H04L25/0232 , H04L25/0258
摘要： The present invention discloses various improvements to multi-user multiple-input multiple-output orthogonal frequency division multiplexing (MU-MIMO-OFDM) wireless communication systems. In one aspect there is disclosed an efficient and accurate channel estimation method and system using locally consecutive pilot sub-carriers. In another aspect there is disclosed an efficient channel feedback method and system by applying a discrete cosine transform to channel coefficients. In another aspect there is disclosed an efficient method and system to calculate a part of the channel inverse by interpolation. These aspects can be used in combination to improve the MU-MIMO-OFDM system.
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公开(公告)号：US20140140320A1
公开(公告)日：2014-05-22
申请号：US14163575
申请日：2014-01-24
发明人： Hajime Suzuki , Douglas Brian Hayman , Joseph Abraham Pathikulangara , Iain Bruce Collings , Zhuo Chen
IPC分类号： H04L5/00
CPC分类号： H04W56/0045 , H04B7/0408 , H04B7/0617 , H04B7/08 , H04L5/0005 , H04W56/006
摘要： Disclosed is a user terminal for wireless communication with a remote access point, the user terminal comprising: a mapping module adapted to map one or more input data bits to an uplink symbol; a delay module adapted to apply a delay to the uplink symbol; a transmit module adapted to modulate the delayed symbol into a frequency channel; and a directional antenna oriented along a dominant path to the access point, the antenna being adapted to transmit the modulated symbol to the access point, wherein the delay is chosen such that the transmitted symbol arrives at the access point simultaneously with a further symbol modulated into the frequency channel and transmitted by a further user terminal.
摘要翻译： 公开了一种用于与远程接入点进行无线通信的用户终端，所述用户终端包括：映射模块，用于将一个或多个输入数据位映射到上行链路符号; 适于向所述上行链路符号应用延迟的延迟模块; 发射模块，适于将延迟符号调制成频道; 以及沿着到所述接入点的主要路径定向的定向天线，所述天线适于将所述调制符号发送到所述接入点，其中所述延迟被选择为使得所发送的符号与被调制成的另外的符号同时到达所述接入点 该频道并由另一用户终端发送。
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公开(公告)号：US10516449B2
公开(公告)日：2019-12-24
申请号：US15870367
申请日：2018-01-12
IPC分类号： H04B7/0452 , H04L25/02 , H04B7/06 , H04B7/0417 , H04L5/00
摘要： The present invention discloses various improvements to multi-user multiple-input multiple-output orthogonal frequency division multiplexing (MU-MIMO-OFDM) wireless communication systems. In one aspect there is disclosed an efficient and accurate channel estimation method and system using locally consecutive pilot sub-carriers. In another aspect there is disclosed an efficient channel feedback method and system by applying a discrete cosine transform to channel coefficients. In another aspect there is disclosed an efficient method and system to calculate a part of the channel inverse by interpolation. These aspects can be used in combination to improve the MU-MIMO-OFDM system.
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公开(公告)号：US09585114B2
公开(公告)日：2017-02-28
申请号：US14933923
申请日：2015-11-05
发明人： Hajime Suzuki , Douglas Brian Hayman , Joseph Abraham Pathikulangara , Iain Bruce Collings , Zhuo Chen
CPC分类号： H04W56/0045 , H04B7/0408 , H04B7/0617 , H04B7/08 , H04L5/0005 , H04W56/006
摘要： Disclosed is a user terminal for wireless communication with a remote access point. The user terminal may include a mapping module adapted to map one or more input data bits to an uplink symbol, a delay module adapted to apply a delay to the uplink symbol, a transmit module adapted to modulate the delayed symbol into a frequency channel, and an antenna being adapted to transmit the modulated symbol to the access point. The delay can be chosen such that the transmitted symbol arrives at the access point simultaneously with a further symbol modulated into the frequency channel and transmitted by a further user terminal.
摘要翻译： 公开了一种用于与远程接入点进行无线通信的用户终端。 用户终端可以包括适于将一个或多个输入数据位映射到上行链路符号的映射模块，适于向上行链路符号应用延迟的延迟模块，适于将延迟符号调制为频率信道的发射模块，以及 适于将调制符号发送到接入点的天线。 可以选择延迟，使得所发送的符号与被调制到频率信道中的另一符号同时到达接入点，并由另一个用户终端发送。
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公开(公告)号：US20160081049A1
公开(公告)日：2016-03-17
申请号：US14933923
申请日：2015-11-05
发明人： Hajime Suzuki , Douglas Brian Hayman , Joseph Abraham Pathikulangara , Iain Bruce Collings , Zhuo Chen
IPC分类号： H04W56/00
CPC分类号： H04W56/0045 , H04B7/0408 , H04B7/0617 , H04B7/08 , H04L5/0005 , H04W56/006
摘要： Disclosed is a user terminal for wireless communication with a remote access point. The user terminal may include a mapping module adapted to map one or more input data bits to an uplink symbol, a delay module adapted to apply a delay to the uplink symbol, a transmit module adapted to modulate the delayed symbol into a frequency channel, and an antenna being adapted to transmit the modulated symbol to the access point. The delay can be chosen such that the transmitted symbol arrives at the access point simultaneously with a further symbol modulated into the frequency channel and transmitted by a further user terminal.
摘要翻译： 公开了一种用于与远程接入点进行无线通信的用户终端。 用户终端可以包括适于将一个或多个输入数据位映射到上行链路符号的映射模块，适于向上行链路符号应用延迟的延迟模块，适于将延迟符号调制为频率信道的发射模块，以及 适于将调制符号发送到接入点的天线。 可以选择延迟，使得所发送的符号与被调制到频率信道中的另一符号同时到达接入点，并由另一个用户终端发送。
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公开(公告)号：US09215048B2
公开(公告)日：2015-12-15
申请号：US14163575
申请日：2014-01-24
发明人： Hajime Suzuki , Douglas Brian Hayman , Joseph Abraham Pathikulangara , Iain Bruce Collings , Zhuo Chen
CPC分类号： H04W56/0045 , H04B7/0408 , H04B7/0617 , H04B7/08 , H04L5/0005 , H04W56/006
摘要： Disclosed is a user terminal for wireless communication with a remote access point, the user terminal comprising: a mapping module adapted to map one or more input data bits to an uplink symbol; a delay module adapted to apply a delay to the uplink symbol; a transmit module adapted to modulate the delayed symbol into a frequency channel; and a directional antenna oriented along a dominant path to the access point, the antenna being adapted to transmit the modulated symbol to the access point, wherein the delay is chosen such that the transmitted symbol arrives at the access point simultaneously with a further symbol modulated into the frequency channel and transmitted by a further user terminal.
摘要翻译： 公开了一种用于与远程接入点进行无线通信的用户终端，所述用户终端包括：映射模块，用于将一个或多个输入数据位映射到上行链路符号; 适于向所述上行链路符号应用延迟的延迟模块; 发射模块，适于将延迟符号调制成频道; 以及沿着到所述接入点的主要路径定向的定向天线，所述天线适于将所述调制符号发送到所述接入点，其中所述延迟被选择为使得所发送的符号与被调制成的另外的符号同时到达所述接入点 该频道并由另一用户终端发送。
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