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51. 发明申请

US20170170885A1 BEAMFORMING CHANNEL SMOOTHING 审中-公开
公开(公告)号：US20170170885A1
公开(公告)日：2017-06-15
申请号：US15283383
申请日：2016-10-01
申请人： Qinghua Li , Xiaogang Chen , Xintian Lin , Yuan Zhu , Assaf Gurevitz , Uri Perlmutter
发明人： Qinghua Li , Xiaogang Chen , Xintian Lin , Yuan Zhu , Assaf Gurevitz , Uri Perlmutter
IPC分类号： H04B7/04 , H04W72/04 , H04W28/02
CPC分类号： H04B7/0617 , H04B7/0413 , H04W28/0236
摘要： This disclosure describes methods, apparatus, and systems related to applying channel smoothing to beamformed vectors in wireless communications between a transmitter device and a receiver device. In a first aspect, a device is disclosed that identifies disruptions between at least two first beamforming vectors on adjacent frequencies in a communication channel between the device and a first device of a plurality of user devices. The device determines one or more second beamforming vectors proximate to the identified disruption. The device utilizes the one or more second beamforming vectors to smooth the communication channel between the device and the first device of the plurality of user devices.

52. 发明授权

US07830980B2 System and method capable of implicit feedback for the devices with an unequal number of transmitter and receiver chains in a wireless local area network 有权
标题翻译：能够在无线局域网中具有不等数量的发射机和接收机链的设备的隐式反馈的系统和方法
公开(公告)号：US07830980B2
公开(公告)日：2010-11-09
申请号：US11006849
申请日：2004-12-07
申请人： Qinghua Li , Xintian Lin
发明人： Qinghua Li , Xintian Lin
IPC分类号： H04L25/49
CPC分类号： H04L1/0675 , H04B7/0421
摘要： An embodiment of the present invention provides a wireless station (STA) capable of implicit feedback in a wireless local area network, comprising at least one power amplifier, a plurality of antennas capable of being connected with said at least one power amplifier, and a switch capable of switching the connection between said plurality of antennas and said at least one power amplifier thereby enabling said wireless station to sound a complete channel matrix for an access point (AP) in communication with said wireless station (STA).
摘要翻译：本发明的实施例提供一种能够在无线局域网中进行隐含反馈的无线站（STA），其包括至少一个功率放大器，能够与所述至少一个功率放大器连接的多个天线，以及开关能够切换所述多个天线与所述至少一个功率放大器之间的连接，从而使得所述无线台能够对与所述无线站（STA）通信的接入点（AP）发出完整的信道矩阵。

53. 发明授权

US07596355B2 System and method capable of closed loop MIMO calibration 有权
标题翻译：能够进行闭环MIMO校准的系统和方法
公开(公告)号：US07596355B2
公开(公告)日：2009-09-29
申请号：US10999621
申请日：2004-11-29
申请人： Qinghua Li , Xintian Lin
发明人： Qinghua Li , Xintian Lin
IPC分类号： H04B1/00
CPC分类号： H04B7/0626 , H04B17/21 , H04W52/52
摘要： An embodiment of the present invention provides a method of closed loop MIMO calibration in a wireless communication system, comprising detecting that station calibration is obsolete and requires calibration, determining a range of automatic gain control which the station wants to calibrate and determining a list of transmission power for an Access Point (AP) in communication with the station, initiating by the station the calibration by sending the power list and N channel sounding preambles, where N is the number of transmit antennas at the station; and sending back by the AP a channel matrix and L sets of channel sounding preambles with a different transmission power level for each set, where L is the number of entries in the power list.
摘要翻译：本发明的实施例提供了一种在无线通信系统中闭环MIMO校准的方法，包括检测站校准过时并需要校准，确定站想要校准的自动增益控制的范围，并确定传输列表用于与站通信的接入点（AP）的功率，由站发起校准，发送功率列表和N个信道探测前导码，其中N是站点处的发射天线的数量; 并且由AP向每个组发送具有不同发射功率电平的信道矩阵和L组信道探测前导码，其中L是电力列表中的条目数。

54. 发明申请

US20070004339A1 Signal spectrum steering method, apparatus, and system 有权
标题翻译：信号频谱转向方法，装置和系统
公开(公告)号：US20070004339A1
公开(公告)日：2007-01-04
申请号：US11173879
申请日：2005-06-30
申请人： Xintian Lin , Qinghua Li , Lei Shao , Allen Bettner
发明人： Xintian Lin , Qinghua Li , Lei Shao , Allen Bettner
IPC分类号： H04B15/00 , H04B1/00
CPC分类号： H04W16/14 , H04B15/02 , H04B2215/064 , H04B2215/065
摘要： A computing platform includes a wireless interface and other devices that may cause interference to the wireless interface. The other devices may change frequencies of operation or data rates to steer signal spectrum away from current wireless channels and reduce interference to the wireless interface.
摘要翻译：计算平台包括无线接口和可能对无线接口造成干扰的其他设备。其他设备可以改变操作频率或数据速率，以将信号频谱从当前无线信道转移出来，并减少对无线接口的干扰。

55. 发明申请

US20060269022A1 Open loop MIMO receiver and method using hard decision feedback 有权
标题翻译：开环MIMO接收机和使用硬判决反馈的方法
公开(公告)号：US20060269022A1
公开(公告)日：2006-11-30
申请号：US11141297
申请日：2005-05-31
申请人： Qinghua Li , Xintian Lin
发明人： Qinghua Li , Xintian Lin
IPC分类号： H04L1/02
CPC分类号： H04L1/06 , H04L1/005 , H04L1/0068 , H04L1/0071
摘要： A receiver for use in performing open loop MIMO performs parallel interference cancellation to reduce interference caused by other spatial streams. Residual interference within an interference-cancelled signal is mitigated using MMSE filtering. The receiver processes received signals in multiple iterations. On each successive iteration, an MMSE filter assumes a lower interference power level than a previous iteration.
摘要翻译：用于执行开环MIMO的接收机执行并行干扰消除以减少由其他空间流引起的干扰。使用MMSE滤波减轻干扰消除信号内的残留干扰。接收机以多次迭代处理接收到的信号。在每次连续的迭代中，MMSE滤波器假设比先前的迭代更低的干扰功率水平。

56. 发明申请

US20060222096A1 Platform noise mitigation in OFDM receivers 失效
公开(公告)号：US20060222096A1
公开(公告)日：2006-10-05
申请号：US11132587
申请日：2005-05-19
申请人： Yongfang Guo , Xintian Lin , Qinghua Li
发明人： Yongfang Guo , Xintian Lin , Qinghua Li
IPC分类号： H04K1/10
CPC分类号： H04B7/0811 , H04L1/0054 , H04L25/0202 , H04L25/0328 , H04L25/067 , H04L27/2647 , H04L27/2657
摘要： Techniques and structures are presented for use in mitigating the effects of platform noise within a wireless device.

57. 发明申请

US20060155533A1 Codebook generation system and associated methods 有权
公开(公告)号：US20060155533A1
公开(公告)日：2006-07-13
申请号：US11036906
申请日：2005-01-13
申请人： Xintian Lin , Qinghua Li
发明人： Xintian Lin , Qinghua Li
IPC分类号： G10L19/12
CPC分类号： H04B7/0456 , H04B7/0478 , H04B7/0617 , H04B7/0639 , H04B7/0663
摘要： A codebook generation system and associated methods are generally described herein.

58. 发明申请

US20060092054A1 Recursive reduction of channel state feedback 有权
公开(公告)号：US20060092054A1
公开(公告)日：2006-05-04
申请号：US10937097
申请日：2004-09-08
申请人： Qinghua Li , Xintian Lin
发明人： Qinghua Li , Xintian Lin
IPC分类号： H03M7/40
CPC分类号： H04B7/0663 , H04B7/0417 , H04B7/0634 , H04B7/0639 , H04L5/0023 , H04L25/0204 , H04L25/0228 , H04L25/0248 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： Feedback bandwidth may be reduced in a closed loop MIMO system by Householder transformations and vector quantization using codebooks.

59. 发明申请

US20060067263A1 Techniques to manage multiple receivers 审中-公开
标题翻译：管理多个接收器的技术
公开(公告)号：US20060067263A1
公开(公告)日：2006-03-30
申请号：US10957274
申请日：2004-09-30
申请人： Qinghua Li , Xintian Lin , Jian Lin
发明人： Qinghua Li , Xintian Lin , Jian Lin
IPC分类号： H04J3/08 , H04B7/14 , H04J1/10
CPC分类号： H04B7/0802
摘要： Method and apparatus to manage multiple receivers for a wireless device are described.
摘要翻译：描述了用于管理无线设备的多个接收器的方法和装置。

60. 发明申请

US20060066369A1 Wideband spread spectrum clock 有权
公开(公告)号：US20060066369A1
公开(公告)日：2006-03-30
申请号：US10957121
申请日：2004-09-30
申请人： Xintian Lin , Qinghua Li
发明人： Xintian Lin , Qinghua Li
IPC分类号： H03K3/84
CPC分类号： H04B15/04 , H04B2201/70715 , H04B2215/064 , H04B2215/067
摘要： A method and apparatus are described. The method comprises generating a clock signal comprising regularly spaced clock-timing transitions between a signal high and a signal low to provide timing for a circuit coupled to the clock signal, and periodicity-disrupting transitions between the signal high and signal low, randomly inserted between the clock-timing transitions to disrupt a periodicity of the regularly spaced clock-timing transitions; and transmitting the clock signal to the circuit.

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