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1. 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。

2. 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。

3. 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）。

4. 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。

5. 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。

6. 发明授权

US07305028B2 Methods and system for equalizing data 有权
标题翻译：数据均衡的方法和系统
公开(公告)号：US07305028B2
公开(公告)日：2007-12-04
申请号：US10390289
申请日：2003-03-17
申请人： Jaiganesh Balakrishnan , Richard K. Martin , C. Richard Johnson, Jr.
发明人： Jaiganesh Balakrishnan , Richard K. Martin , C. Richard Johnson, Jr.
IPC分类号： H03K5/159 , H04B1/10
CPC分类号： H04L25/03012 , H04L2025/03414
摘要： A method for equalizing data and systems utilizing the method. The method of this invention for equalizing (by shortening the channel response) data includes minimizing a function of the data and a number of equalizer characteristic parameters, where the function utilizes auto-correlation data corresponding to equalized data. Updated equalizer characteristic parameters are then obtained from the minimization and an initial set of equalizer characteristic parameters. Finally, the received data is processed utilizing the equalizer defined by the minimization. The method of this invention can be implemented in an equalizer and the equalizer of this invention may be included in a system for receiving data.
摘要翻译：一种利用该方法均衡数据和系统的方法。用于均衡（通过缩短信道响应）数据的本发明的方法包括最小化数据的功能和多个均衡器特性参数，其中该功能利用对应于均衡数据的自相关数据。然后从最小化和初始的均衡器特征参数集获得更新的均衡器特征参数。最后，使用由最小化定义的均衡器来处理接收到的数据。本发明的方法可以在均衡器中实现，并且本发明的均衡器可以被包括在用于接收数据的系统中。

7. 发明申请

US20070076804A1 Image-rejecting channel estimator, method of image-rejection channel estimating and an OFDM receiver employing the same 审中-公开
标题翻译：图像拒绝信道估计器，镜像抑制信道估计方法和采用该方法的OFDM接收机
公开(公告)号：US20070076804A1
公开(公告)日：2007-04-05
申请号：US11240203
申请日：2005-09-30
申请人： Charles Sestok , Anand Dabak , Jaiganesh Balakrishnan
发明人： Charles Sestok , Anand Dabak , Jaiganesh Balakrishnan
IPC分类号： H04K1/10
CPC分类号： H04L25/0232 , H04B1/123 , H04L27/261
摘要： The present invention provides an image-rejecting channel estimator for use with an orthogonal frequency division multiplex (OFDM) receiver employing scattered pilot channel estimates. In one embodiment, the image-rejecting channel estimator includes an estimation interpolator configured to provide channel estimates through time interpolation and frequency interpolation employing the scattered pilot channel estimates. The image-rejecting channel estimator also includes an image-rejection formatter coupled to the estimation interpolator and configured to provide image-rejection filtering to suppress an image in an output spectrum of the channel estimates from at least one of the time interpolation and frequency interpolation.
摘要翻译：本发明提供一种与使用分散导频信道估计的正交频分复用（OFDM）接收机一起使用的图像拒绝信道估计器。在一个实施例中，图像拒绝信道估计器包括估计内插器，被配置为通过使用分散导频信道估计的时间插值和频率插值来提供信道估计。图像拒绝信道估计器还包括耦合到估计内插器的镜像拒绝格式器，并且被配置为提供镜像抑制滤波以从时间插值和频率插值中的至少一个抑制信道估计的输出频谱中的图像。

8. 发明申请

US20060167964A1 Methods and systems for a multi-channel fast fourier transform (FFT) 有权
标题翻译：用于多通道快速傅里叶变换（FFT）的方法和系统
公开(公告)号：US20060167964A1
公开(公告)日：2006-07-27
申请号：US11336459
申请日：2006-01-20
申请人： Jaiganesh Balakrishnan , Manish Goel
发明人： Jaiganesh Balakrishnan , Manish Goel
IPC分类号： G06F17/14
CPC分类号： H04L27/265 , G06F17/142
摘要： In at least some embodiments, a method is provided. The method includes receiving samples from a first input channel and a second input channel. The method further includes controlling commutators to selectively switch samples between the first and second input channels for input to a radix-2 butterfly. The method further includes continuously activating the radix-2 butterfly while processing samples received from the first input channel followed by samples received from the second input channel.
摘要翻译：在至少一些实施例中，提供了一种方法。该方法包括从第一输入通道和第二输入通道接收采样。该方法还包括控制换向器以选择性地在第一和第二输入通道之间切换采样，以输入到基数-2蝴蝶。该方法还包括在处理从第一输入通道接收的样本后跟从第二输入通道接收的采样时连续激活基数-2蝶形。

9. 发明申请

US20050258992A1 Digital-to-analog converter data rate reduction by interleaving and recombination through mixer switching 有权
标题翻译：数模转换器数据速率降低通过交错和混合通过混频器切换
公开(公告)号：US20050258992A1
公开(公告)日：2005-11-24
申请号：US10851365
申请日：2004-05-21
申请人： Paul Fontaine , Ranjit Gharpurey , Anuj Batra , Jaiganesh Balakrishnan
发明人： Paul Fontaine , Ranjit Gharpurey , Anuj Batra , Jaiganesh Balakrishnan
IPC分类号： H03M1/66 , H04B1/69
CPC分类号： H03M1/662 , H04B1/71635
摘要： A system and method implement very high data rate baseband DACs suitable for wireless applications related to new standards (e.g. Ultra-Wide Band) using CMOS processes allowing an integrated solution with the deep-submicron CMOS digital baseband. A single CMOS block working at full speed is discarded in favor of several blocks, each working at a fraction of the original data rate.
摘要翻译：一种系统和方法实现了适用于与新标准（例如超宽带）相关的无线应用的非常高数据速率的基带DAC，其使用允许具有深亚微米CMOS数字基带的集成解决方案的CMOS工艺。以全速工作的单个CMOS块被丢弃，有利于几个块，每个块以原始数据速率的一小部分工作。

10. 发明申请

US20050207335A1 Downlink signaling for a multi-carrier communications system 有权
标题翻译：多载波通信系统的下行链路信令
公开(公告)号：US20050207335A1
公开(公告)日：2005-09-22
申请号：US11085305
申请日：2005-03-21
申请人： Timothy Schmidl , Eko Onggosanusi , Anand Dabak , Aris Papasakellariou , Jaiganesh Balakrishnan , Yan Hui
发明人： Timothy Schmidl , Eko Onggosanusi , Anand Dabak , Aris Papasakellariou , Jaiganesh Balakrishnan , Yan Hui
IPC分类号： H04J11/00 , H04L1/00 , H04L1/16 , H04L1/18
CPC分类号： H04L1/1845 , H04L1/0026 , H04L1/1671
摘要： System and method for signaling control information in a multi-carrier communications system to transmit data. A preferred embodiment comprises demodulating a first carrier that is used for transmitting a control channel transmission, determining a second carrier that is used for transmitting a data channel transmission based upon the demodulated control channel transmission, and demodulating the second carrier to obtain the data channel transmission. Additionally, designs for multi-carrier receivers are provided.
摘要翻译：用于在多载波通信系统中用于信令控制信息的数据传输的系统和方法。优选实施例包括解调用于发送控制信道传输的第一载波，基于解调的控制信道传输确定用于发送数据信道传输的第二载波，以及解调第二载波以获得数据信道传输。另外，提供了多载波接收机的设计。

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