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1. 发明授权

US07668265B2 Ultra wideband interference cancellation for orthogonal frequency division multiplex transmitters by protection-edge tones 有权
标题翻译：通过保护边缘色调对正交频分复用发射机进行超宽带干扰消除
公开(公告)号：US07668265B2
公开(公告)日：2010-02-23
申请号：US11173840
申请日：2005-07-01
申请人： Jaiganesh Balakrishnan , Hirohisa Yamaguchi
发明人： Jaiganesh Balakrishnan , Hirohisa Yamaguchi
IPC分类号： H03D1/04
CPC分类号： H04L27/2613 , H04B1/719 , H04L25/03828 , H04L27/2626
摘要： A method of wirelessly communicating is disclosed. The method comprises determining a matrix W based in part on limiting a plurality of active interference cancellation tone values (416), determining the active interference cancellation tone values (416) based on W and based on a plurality of information data values (410), and transmitting an orthogonal frequency division multiplex signal (310) based on the plurality of active interference cancellation tone values (416) and the information data values (410).
摘要翻译：公开了一种无线通信的方法。该方法包括：基于限制多个主动干扰消除音调值（416），基于W并基于多个信息数据值（410）确定主动干扰消除音调值（416）来确定矩阵W，以及基于所述多个有源干扰消除音调值（416）和所述信息数据值（410）发送正交频分复用信号（310）。

2. 发明授权

US08472555B2 Ultra wideband interference cancellation for orthogonal frequency division multiplex transmitters by protection-edge tones 有权
标题翻译：通过保护边缘色调对正交频分复用发射机进行超宽带干扰消除
公开(公告)号：US08472555B2
公开(公告)日：2013-06-25
申请号：US12636917
申请日：2009-12-14
申请人： Jaiganesh Balakrishnan , Hirohisa Yamaguchi
发明人： Jaiganesh Balakrishnan , Hirohisa Yamaguchi
IPC分类号： H04L25/03
CPC分类号： H04L27/2613 , H04B1/719 , H04L25/03828 , H04L27/2626
摘要： A transmitter and communication system are disclosed. A first component operable to determine an active interference cancellation value for each of a plurality of active interference cancellation tones and a protection-edge value for each of a plurality of protection-edge tones based on optimizing active interference cancellation, and further based on constraining an average power of the active interference cancellation values and the protection-edge values to less than or equal to a maximum power level, and on a plurality of data values. A second component is operable to transform a sequence of tones to a time domain signal, the sequence of tones comprised of the active interference cancellation tones, the protection-edge tones, and a plurality of data tones, the data tones containing the data values. A third component operable to transmit an orthogonal frequency division multiplex signal based on the time domain signal.
摘要翻译：公开了一种发射机和通信系统。第一组件，其可操作以基于优化主动干扰消除来确定多个有源干扰消除音调中的每一个的主动干扰消除值和针对多个保护边缘音调中的每一个的保护边缘值，并且还基于约束主动干扰消除值和保护边缘值的平均功率小于或等于最大功率电平，以及多个数据值。第二组件可操作以将音调序列变换为时域信号，由主动干扰消除音调组成的音调序列，保护边缘音调和多个数据音调，数据音调包含数据值。第三组件，用于基于时域信号发送正交频分复用信号。

3. 发明申请

US20060008017A1 Time-domain windowing of multi-band OFDM system to enable spectral sculpting 有权
标题翻译：多频带OFDM系统的时域窗口启用光谱雕刻
公开(公告)号：US20060008017A1
公开(公告)日：2006-01-12
申请号：US11174401
申请日：2005-07-01
申请人： Jaiganesh Balakrishnan , Anuj Batra , Hirohisa Yamaguchi
发明人： Jaiganesh Balakrishnan , Anuj Batra , Hirohisa Yamaguchi
IPC分类号： H04K1/10
CPC分类号： H04L27/2613 , H04B1/719 , H04L25/03828 , H04L27/2626
摘要： A method of wirelessly communicating is disclosed. The method comprises generating a plurality of tones for a wideband orthogonal frequency division multiplex symbol (310), the tones including a plurality of contiguous zero-valued tones, inverse Fourier transforming the tones to a plurality of time-domain samples (312), copying a plurality of the time-domain samples as a portion of a cyclic block (314), the cyclic block (314) contiguous with the time-domain samples (312), time-domain window filtering the time-domain samples (312) and the cyclic block (314) to form a portion of the wideband orthogonal frequency division multiplex symbol (310), wherein the time-domain window filter (350) is a function φ(k) having the property that φ(k)+φ(k+Nfft) is about equal to a constant θ where Nfft is the number of tones, and transmitting the wideband orthogonal frequency division multiplex symbol (310).
摘要翻译：公开了一种无线通信的方法。该方法包括：生成用于宽带正交频分复用符号（310）的多个音调，该音调包括多个连续的零值音调，将音调逆傅里叶变换为多个时域采样（312），复制作为循环块（314）的一部分的多个时域采样，与时域采样（312）连续的循环块（314），时域采样（312）的时域窗口滤波和所述循环块（314）形成所述宽带正交频分多路复用符号（310）的一部分，其中所述时域窗口滤波器（350）是具有所述phi（k）+ phi（k） k + N ft ft ft ft is is is is about about about about about about about about about where where and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and。

4. 发明申请

US20060008016A1 Ultra wideband interference cancellation for orthogonal frequency division multiplex transmitters by protection-edge tones 有权
标题翻译：通过保护边缘色调对正交频分复用发射机进行超宽带干扰消除
公开(公告)号：US20060008016A1
公开(公告)日：2006-01-12
申请号：US11173840
申请日：2005-07-01
申请人： Jaiganesh Balakrishnan , Hirohisa Yamaguchi
发明人： Jaiganesh Balakrishnan , Hirohisa Yamaguchi
IPC分类号： H04J11/00
CPC分类号： H04L27/2613 , H04B1/719 , H04L25/03828 , H04L27/2626
摘要： A method of wirelessly communicating is disclosed. The method comprises determining a matrix W based in part on limiting a plurality of active interference cancellation tone values (416), determining the active interference cancellation tone values (416) based on W and based on a plurality of information data values (410), and transmitting an orthogonal frequency division multiplex signal (310) based on the plurality of active interference cancellation tone values (416) and the information data values (410).
摘要翻译：公开了一种无线通信的方法。该方法包括：基于限制多个主动干扰消除音调值（416），基于W并基于多个信息数据值（410）确定主动干扰消除音调值（416）来确定矩阵W，以及基于所述多个有源干扰消除音调值（416）和所述信息数据值（410）发送正交频分复用信号（310）。

5. 发明申请

US20110058626A1 Ultra Wideband Interference Cancellation for Orthogonal Frequency Division Multiplex Transmitters by Protection-Edge Tones 有权
标题翻译：通过保护边缘音调正交频分复用发射机的超宽带干扰消除
公开(公告)号：US20110058626A1
公开(公告)日：2011-03-10
申请号：US12636917
申请日：2009-12-14
申请人： Jaiganesh Balakrishnan , Hirohisa Yamaguchi
发明人： Jaiganesh Balakrishnan , Hirohisa Yamaguchi
IPC分类号： H04L25/49
CPC分类号： H04L27/2613 , H04B1/719 , H04L25/03828 , H04L27/2626
摘要： A transmitter and communication system are disclosed. A first component operable to determine an active interference cancellation value for each of a plurality of active interference cancellation tones and a protection-edge value for each of a plurality of protection-edge tones based on optimizing active interference cancellation, and further based on constraining an average power of the active interference cancellation values and the protection-edge values to less than or equal to a maximum power level, and on a plurality of data values. A second component is operable to transform a sequence of tones to a time domain signal, the sequence of tones comprised of the active interference cancellation tones, the protection-edge tones, and a plurality of data tones, the data tones containing the data values. A third component operable to transmit an orthogonal frequency division multiplex signal based on the time domain signal.
摘要翻译：公开了一种发射机和通信系统。第一组件，其可操作以基于优化主动干扰消除来确定多个有源干扰消除音调中的每一个的主动干扰消除值和针对多个保护边缘音调中的每一个的保护边缘值，并且还基于约束主动干扰消除值和保护边缘值的平均功率小于或等于最大功率电平，以及多个数据值。第二组件可操作以将音调序列变换为时域信号，由主动干扰消除音调组成的音调序列，保护边缘音调和多个数据音调，数据音调包含数据值。第三组件，用于基于时域信号发送正交频分复用信号。

6. 发明授权

US07184485B2 Time-domain windowing of multi-band OFDM system to enable spectral sculpting 有权
标题翻译：多频带OFDM系统的时域窗口启用光谱雕刻
公开(公告)号：US07184485B2
公开(公告)日：2007-02-27
申请号：US11174401
申请日：2005-07-01
申请人： Jaiganesh Balakrishnan , Anuj Batra , Hirohisa Yamaguchi
发明人： Jaiganesh Balakrishnan , Anuj Batra , Hirohisa Yamaguchi
IPC分类号： H04K1/10
CPC分类号： H04L27/2613 , H04B1/719 , H04L25/03828 , H04L27/2626
摘要： A method of wirelessly communicating is disclosed. The method comprises generating a plurality of tones for a wideband orthogonal frequency division multiplex symbol (310), the tones including a plurality of contiguous zero-valued tones, inverse Fourier transforming the tones to a plurality of time-domain samples (312), copying a plurality of the time-domain samples as a portion of a cyclic block (314), the cyclic block (314) contiguous with the time-domain samples (312), time-domain window filtering the time-domain samples (312) and the cyclic block (314) to form a portion of the wideband orthogonal frequency division multiplex symbol (310), wherein the time-domain window filter (350) is a function Φ(k) having the property that Φ(k)+Φ(k+Nfft) is about equal to a constant θ where Nfft is the number of tones, and transmitting the wideband orthogonal frequency division multiplex symbol (310).
摘要翻译：公开了一种无线通信的方法。该方法包括：生成用于宽带正交频分复用符号（310）的多个音调，该音调包括多个连续的零值音调，将音调逆傅里叶变换为多个时域采样（312），复制作为循环块（314）的一部分的多个时域采样，与时域采样（312）连续的循环块（314），时域采样（312）的时域窗口滤波和循环块（314）以形成宽带正交频分复用符号（310）的一部分，其中时域窗口滤波器（350）是具有Phi（k）+ Phi（k） k + N ft ft ft ft is is is is about about about about about about about about about where where and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and。

7. 发明授权

US08805312B2 Methods, circuits, systems and apparatus providing audio sensitivity enhancement in a wireless receiver, power management and other performances 有权
标题翻译：在无线接收机中提供音频敏感度增强的方法，电路，系统和装置，电源管理和其他性能
公开(公告)号：US08805312B2
公开(公告)日：2014-08-12
申请号：US13193088
申请日：2011-07-28
申请人： Jaiganesh Balakrishnan
发明人： Jaiganesh Balakrishnan
IPC分类号： H04B17/00
CPC分类号： H04B1/12 , H04B1/10 , H04B1/1027 , H04B1/1646 , H04B17/20 , H04B17/318 , H04B17/336 , H04B2001/1054 , H04H40/72
摘要： A wireless receiver (10) includes a down converter module (210) operable to deliver a signal having a signal bandwidth that changes over time, a dynamically controllable filter module (200) having a filter bandwidth and fed by said down converter module (210), and a measurement module (295) operable to at least approximately measure the signal bandwidth, said dynamically controllable filter module (200) responsive to said measurement module (295) to dynamically adjust the filter bandwidth to more nearly match the signal bandwidth as it changes over time, whereby output from said filter module (200) is noise-reduced. Other wireless receivers, electronic circuits, and processes for their operation are disclosed.
摘要翻译：无线接收器（10）包括可转换信号的下变频器模块（210），其具有随时间变化的信号带宽，具有滤波器带宽并由所述下变换器模块（210）馈送的动态可控滤波器模块（200），以及可操作以至少近似地测量所述信号带宽的测量模块（295），所述动态可控滤波器模块（200）响应于所述测量模块（295）来动态地调整所述滤波器带宽，使得所述滤波器带宽随着其变化而更接近所述信号带宽随着时间的推移，来自所述滤波器模块（200）的输出被降噪。公开了其他无线接收机，电子电路及其操作的处理。

8. 发明授权

US07756002B2 Time-frequency interleaved orthogonal frequency division multiplexing ultra wide band physical layer 有权
标题翻译：时频交织正交频分复用超宽带物理层
公开(公告)号：US07756002B2
公开(公告)日：2010-07-13
申请号：US10688169
申请日：2003-10-18
申请人： Anuj Batra , Jaiganesh Balakrishnan , Anand G. Dabak , Ranjit Gharpurey , Paul H. Fontaine , Heng-Chih Lin
发明人： Anuj Batra , Jaiganesh Balakrishnan , Anand G. Dabak , Ranjit Gharpurey , Paul H. Fontaine , Heng-Chih Lin
IPC分类号： H04J11/00
CPC分类号： H04B1/7163 , H04L1/0041 , H04L1/0069 , H04L1/0071 , H04L1/0075 , H04L27/2602
摘要： A PHY entity for a UWB system utilizes the unlicensed 3.1-10.6 GHZ UWB band, as regulated in the United States by the Code of Federal Regulation, Title 47, Section 15. The UWB system provides a wireless pico area network (PAN) with data payload communication capabilities of 55, 80, 110, 160, 200, 320 and 480 Mb/s. The UWB system employs orthogonal frequency division multiplexing (OFDM) and uses a total of 122 sub-carriers that are modulated using quadrature phase shift keying (QPSK). Forward error correction coding (convolutional coding) is used with a coding rate of 11/32, 1/2, 5/8 and 3/4.
摘要翻译： UWB系统的PHY实体利用美国由“联邦法规”第47章第15节规定的未经授权的3.1-10.6 GHZ UWB频带。UWB系统提供无线微微区域网络（PAN）与数据有效载荷通信能力为55,80,110,160,200,320和480 Mb / s。 UWB系统采用正交频分复用（OFDM），并且使用使用正交相移键控（QPSK）调制的总共122个子载波。前向纠错编码（卷积编码）的编码率为11/32，1/2，5/8和3/4。

9. 发明授权

US07634020B2 Preamble for a TFI-OFDM communications system 有权
标题翻译：用于TFI-OFDM通信系统的前缀
公开(公告)号：US07634020B2
公开(公告)日：2009-12-15
申请号：US10782095
申请日：2004-02-19
申请人： Anuj Batra , Jaiganesh Balakrishnan , Anand Dabak
发明人： Anuj Batra , Jaiganesh Balakrishnan , Anand Dabak
IPC分类号： H04L27/00
CPC分类号： H04B1/7093 , H04B1/709 , H04L27/2613
摘要： System and method for simplifying preamble detection and reducing power consumption in receivers. A preferred embodiment comprises a preamble made up of two sequences, a first sequence that is specified in the time domain and a second sequence that is specified in the frequency domain. The first sequence which comprises multiple copies of a time domain code sequence can allow easy detection of the preamble while the second sequence comprises multiple copies of a frequency domain code sequence and allows easy determination of the frequency response of the communications channel. A hierarchical sequence can be used to allow multi-stage correlation. This can result in a less complex correlator, hence lower power consumption. Piconets can use different code sequences to allow rapid determination of the source of a transmission without requiring the receiver to decode the entire transmission.
摘要翻译：用于简化前导码检测并降低接收机功耗的系统和方法。优选实施例包括由两个序列组成的前导码，在时域中指定的第一序列和在频域中指定的第二序列。包括时域码序列的多个副本的第一序列可以容易地检测前置码，而第二序列包括频域码序列的多个副本，并且允许容易地确定通信信道的频率响应。可以使用分级序列来允许多级相关。这可能导致较不复杂的相关器，从而降低功耗。微微网可以使用不同的码序列来快速确定传输源，而不需要接收机对整个传输进行解码。

10. 发明申请

US20090028220A1 Robust packet detection, symbol timing, channel length estimation and channel response estimation for wireless systems 有权
标题翻译：无线系统的鲁棒分组检测，符号定时，信道长度估计和信道响应估计
公开(公告)号：US20090028220A1
公开(公告)日：2009-01-29
申请号：US11893050
申请日：2007-08-13
申请人： June Chul Roh , Anuj Batra , Manoneet Singh , Jaiganesh Balakrishnan
发明人： June Chul Roh , Anuj Batra , Manoneet Singh , Jaiganesh Balakrishnan
IPC分类号： H04B1/713 , H04L27/06
CPC分类号： H04L25/0216 , H04B17/327 , H04L25/022 , H04L25/0228 , H04L27/2656 , H04L27/2662 , H04L27/2675
摘要： A method. The method includes producing a first signal match indication based on at least one match indication indicative of a match between at least one signal received in at least one band and a reference signal. The method also includes producing a first signal multipath combined signal based upon the first signal match indication, and detecting a first peak in the first multipath combined signal.
摘要翻译：一个方法。该方法包括基于指示在至少一个频带中接收的至少一个信号与参考信号之间的匹配的至少一个匹配指示产生第一信号匹配指示。该方法还包括基于第一信号匹配指示产生第一信号多径组合信号，以及检测第一多路复合信号中的第一峰值。

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