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1. 发明申请

US20050180375A1 System and method for channelization and data multiplexing in a wireless communication network 审中-公开
标题翻译：用于无线通信网络中的信道化和数据复用的系统和方法
公开(公告)号：US20050180375A1
公开(公告)日：2005-08-18
申请号：US11032402
申请日：2005-01-10
申请人： Anuj Batra , Jaiganesh Balakrishnan , Anand Dabak , Nathan Belk , Danielle Griffith
发明人： Anuj Batra , Jaiganesh Balakrishnan , Anand Dabak , Nathan Belk , Danielle Griffith
IPC分类号： H04B1/69 , H04J11/00 , H04J13/00 , H04B7/208
CPC分类号： H04B1/71632 , H04J13/0022
摘要： A system and method for channelization and data multiplexing in ultra-wideband (UWB) wireless communication system is described. The spectrum allocated for UWB in a multi-band OFDM (orthogonal frequency division multiplex) system is subdivided into various bands. A set of time frequency codes (TFC's) is defined, wherein each code specifies one of a plurality of unique band versus time sequences for a particular band group, for sequential data symbols of a given piconet. The separation of data words from multiple devices or multiple simultaneously operating piconets (SOP's) is provided by a combination of FDMA and TFC's. The combination of FDMA and TFC's provides a simplified interface between the MAC and PHY.
摘要翻译：描述了在超宽带（UWB）无线通信系统中的信道化和数据复用的系统和方法。在多频带OFDM（正交频分复用）系统中为UWB分配的频谱被细分成各种频带。定义一组时间频率码（TFC），其中每个码指定给定微微网的顺序数据符号的特定频带组的多个唯一频带对时间序列中的一个。数据字从多个设备或多个同时操作的微微网（SOP）的分离由FDMA和TFC的组合提供。 FDMA和TFC的组合提供了MAC和PHY之间的简化接口。

2. 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。

3. 发明申请

US20050050130A1 Ranging in multi-band OFDM communications systems 审中-公开
标题翻译：在多频带OFDM通信系统中进行测距
公开(公告)号：US20050050130A1
公开(公告)日：2005-03-03
申请号：US10932894
申请日：2004-09-02
申请人： Anand Dabak , Anuj Batra , Jaiganesh Balakrishnan
发明人： Anand Dabak , Anuj Batra , Jaiganesh Balakrishnan
IPC分类号： G06F17/15 , H04J1/16 , H04J3/06 , H04L7/04 , H04L27/26
CPC分类号： H04J1/16 , H04J3/0682 , H04L7/041 , H04L27/2601
摘要： System and method for determining a separation between communicating devices. A preferred embodiment comprises a first device transmitting a signal over multiple subbands to a second device, the second device determining a timing for the signal by processing the signal in each subband separately. The second device then transmits a signal back to the first device along with timing information (again, over multiple subbands). The first device then determines a timing for the signal and by determining a difference in the timing information provided by the second device and timing information it determines, the first device can compute the separation between it and the second device. The use of multiple subbands can dedicate more bandwidth to the transmission of the signal, permitting greater resolution.
摘要翻译：用于确定通信设备之间的间隔的系统和方法。优选实施例包括将多个子带上的信号发送到第二设备的第一设备，第二设备通过分别处理每个子带中的信号来确定信号的定时。然后，第二设备连同定时信息（再次，通过多个子带）一起发送回到第一设备的信号。然后，第一设备确定信号的定时，并且通过确定由第二设备提供的定时信息和它确定的定时信息的差异，第一设备可以计算它与第二设备之间的间隔。使用多个子带可以将更多的带宽专用于信号的传输，从而允许更高的分辨率。

4. 发明申请

US20050237923A1 Multi-bank OFDM high data rate extensions 审中-公开
标题翻译：多行OFDM高数据速率扩展
公开(公告)号：US20050237923A1
公开(公告)日：2005-10-27
申请号：US11115816
申请日：2005-04-26
申请人： Jaiganesh Balakrishnan , Anuj Batra , Anand Dabak
发明人： Jaiganesh Balakrishnan , Anuj Batra , Anand Dabak
IPC分类号： H04B7/02 , H04J1/00 , H04J11/00 , H04L27/26
CPC分类号： H04L27/2602 , H04B7/02
摘要： A transmitter 200 is provided. The transmitter 200 comprises a mapper 207 operable to map a bit stream into a plurality of tones to promote high data rate multi-band orthogonal frequency division multiplex communication, wherein the tones can take on sixteen or more different values 300. In another embodiment a communications system 1360 is provided that includes a transceiver 1362 that has two or more antennas 1394 and 1396. The transceiver 1362 transmits a first multi-band orthogonal frequency division multiplex signal in multiple input/multiple output mode and receives a second multi-band orthogonal frequency division multiplex signal in multiple input/multiple output mode. In another embodiment, a transceiver 200, 202 transmits a first multi-band orthogonal frequency division multiplex symbol concurrently on a plurality of sub-bands and receives a second multi-band orthogonal frequency division multiplex symbol concurrently on a plurality of sub-bands.
摘要翻译：提供发射机200。发射机200包括映射器207，其可操作以将比特流映射成多个音调以促进高数据速率多频带正交频分多路复用通信，其中音调可以具有十六个或更多个不同的值300.在另一个实施例中，通信提供系统1360，其包括具有两个或多个天线1394和1396的收发机1362.收发机1362以多输入/多输出模式发送第一多频带正交频分多路复用信号，并接收第二多频带正交频分多重输入/多输出模式下的多路复用信号。在另一个实施例中，收发器200,202在多个子带上同时发送第一多频带正交频分复用符号，并且在多个子带上同时接收第二多频带正交频分复用符号。

5. 发明申请

US20080069255A1 Efficient Bit Interleaver for A Multi-Band OFDM Ultra-Wideband System 审中-公开
标题翻译：用于多频带OFDM超宽带系统的高效位交织器
公开(公告)号：US20080069255A1
公开(公告)日：2008-03-20
申请号：US11939222
申请日：2007-11-13
申请人： Jaiganesh Balakrishnan , Anuj Batra , Anand Dabak
发明人： Jaiganesh Balakrishnan , Anuj Batra , Anand Dabak
IPC分类号： H04L27/00
CPC分类号： H04L1/0059 , H03M13/2707 , H04B1/7176 , H04B1/719 , H04L1/0068 , H04L1/0071 , H04L5/0007 , H04L5/0042 , H04L5/0044 , H04L5/0083
摘要： An efficient bit interleaving scheme for a multi-band OFDM ultra-wideband (UWB) system. The encoded bits of the multi-band OFDM system are interleaved within each OFDM symbol and across OFDM symbols. The bit interleaving scheme minimizes performance degradation due to groups of contiguous OFDM tones experiencing a poor SNR caused by the frequency selective channel, exploits the frequency diversity across sub-bands, randomizes the effect of co-channel interference from simultaneously operating un-coordinated piconets, and randomizes the impact of generic narrow-band interferers present within the UWB spectrum.
摘要翻译：一种用于多频带OFDM超宽带（UWB）系统的有效位交织方案。多频带OFDM系统的编码比特在每个OFDM符号内和OFDM符号之间进行交织。比特交织方案最小化由于频率选择信道引起的差的SNR的连续OFDM音调组的性能下降，利用子频带上的频率分集，随机化来自同时操作的非协调微微网的同信道干扰的影响，并随机化UWB频谱内存在的通用窄带干扰源的影响。

6. 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。

7. 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。

8. 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。

9. 发明授权

US06876262B2 Technique for generating carrier frequencies with fast hopping capability 有权
标题翻译：用于产生具有快速跳变能力的载波频率的技术
公开(公告)号：US06876262B2
公开(公告)日：2005-04-05
申请号：US10626924
申请日：2003-07-25
申请人： Ranjit Gharpurey , Anuj Batra , Jaiganesh Balakrishnan , Anand G. Dabak
发明人： Ranjit Gharpurey , Anuj Batra , Jaiganesh Balakrishnan , Anand G. Dabak
IPC分类号： H03L7/00 , H03L7/16 , H03L7/18 , H04B1/40 , H04B1/69 , H04L27/00
CPC分类号： H04L27/0014 , H03L7/18 , H04B1/406 , H04B1/7136 , H04L2027/0016 , H04L2027/0053
摘要： A technique for generating carrier frequencies with fast hopping capability associated with multiband systems for ultra wideband applications. The technique employs a single VCO 20 that is locked in a PLL 30. The output of this VCO 20 is divided in the frequency domain. The divided frequencies thus obtained are combined in a single-sideband manner to obtain various other frequencies. The single-sideband combination requires open loop operations such as multiplication and addition or subtraction to implement, and hence is very fast. The VCO center frequency is not disturbed in the process. Since the required frequencies are generated in an open-loop fashion, instead of inside a PLL, the speed is increased by orders of magnitude.
摘要翻译：用于产生具有与用于超宽带应用的多频带系统相关联的具有快速跳变能力的载波频率的技术。该技术采用锁定在PLL 30中的单个VCO 20。该VCO 20的输出在频域中被划分。这样获得的划分频率以单边带方式组合以获得各种其它频率。单边带组合需要开环操作，例如乘法和加法或减法来实现，因此非常快。 VCO中心频率在此过程中不受干扰。由于所需的频率是以开环方式产生的，而不是在PLL内部，速度增加了数量级。

10. 发明申请

US20100020684A1 Multi-Band OFDM Communications System 有权
标题翻译：多频带OFDM通信系统
公开(公告)号：US20100020684A1
公开(公告)日：2010-01-28
申请号：US12571735
申请日：2009-10-01
申请人： Jaiganesh Balakrishnan , Anuj Batra , Anand G. Dabak
发明人： Jaiganesh Balakrishnan , Anuj Batra , Anand G. Dabak
IPC分类号： H04W4/00 , H04L12/26
CPC分类号： H04L5/023
摘要： System and method for providing multiple access in a multi-band, orthogonal frequency division multiplexed (multi-band-OFDM) communications system. A preferred embodiment comprises determining a transmission bandwidth to support a performance requirement and configuring transmission bands in the multi-band-OFDM communications system based upon the transmission bandwidth, wherein the transmission bands may be made up of smaller transmission bands bonded together. Further comprising initializing communications with the configured transmission bands. The use of bonded transmission bands can provide increased data rates and/or increased range performance.
摘要翻译：用于在多频带正交频分复用（多频带OFDM）通信系统中提供多址的系统和方法。优选实施例包括确定传输带宽以支持性能要求，并且基于传输带宽来配置多频带OFDM通信系统中的传输频带，其中传输频带可由较小的传输频带组合在一起。还包括初始化与配置的传输频带的通信。使用粘合的传输带可以提供增加的数据速率和/或增加的范围性能。

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