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1. 发明申请

WO2006025996A2 CONCATENATED CODING OF THE MULTI-BAND ORTHOGONAL FREQUENCY DIVISION MODULATION SYSTEM 审中-公开
标题翻译：多波段正交频分调制系统的定义编码
公开(公告)号：WO2006025996A2
公开(公告)日：2006-03-09
申请号：PCT/US2005/026876
申请日：2005-07-28
申请人： TEXAS INSTRUMENTS INCORPORATED , BALAKRISHNAN, Jaiganesh , LINGAM, Srinivas , GOEL, Manish , BATRA, Anuj
发明人： BALAKRISHNAN, Jaiganesh , LINGAM, Srinivas , GOEL, Manish , BATRA, Anuj
IPC分类号： H04L23/02 , H04K1/10 , H04L27/04
CPC分类号： H04K1/00 , H03M13/1102 , H03M13/15 , H03M13/23 , H03M13/2936 , H03M13/2957 , H03M13/618 , H04L1/0041 , H04L1/0057 , H04L1/0059 , H04L1/0065 , H04L1/0072 , H04L1/04 , H04L5/023 , H04L27/2602 , H04L27/2608 , H04L2001/0098
摘要： The present disclosure is directed to a transmitter that includes a first block encoder 450 operable to block encode at least a first portion of a multi-band orthogonal frequency division modulation signal. The first block encoder 450 also includes a convolution encoder 304 operable to convolution encode the output of the first block encoder 450. A method of communicating is also disclosed. The method comprises block encoding a first portion of a message to produce a first outer code word. The method includes convolution encoding the first outer code word to produce a first inner code word. The method also includes transmitting the first inner code word as part of a multiband orthogonal frequency division modulation signal.
摘要翻译：本公开涉及一种发射机，其包括第一块编码器450，第一块编码器450可操作用于块化至少编码多频带正交频分调制信号的第一部分。第一块编码器450还包括可用于对第一块编码器450的输出进行卷积编码的卷积编码器304.还公开了一种通信方法。该方法包括对消息的第一部分进行块编码以产生第一外码字。该方法包括对第一外码字进行卷积编码以产生第一内码字。该方法还包括作为多频带正交频分调制信号的一部分发送第一内码字。

2. 发明申请

WO2006076648A2 COMMUNICATION SYSTEM OVERLAP-AND-ADD OPERATION 审中-公开
标题翻译：通信系统覆盖和添加操作
公开(公告)号：WO2006076648A2
公开(公告)日：2006-07-20
申请号：PCT/US2006/001350
申请日：2006-01-13
申请人： TEXAS INSTRUMENTS INCORPORATED , BALAKRISHNAN, Jaiganesh , LINGAM, Srinivas , BATRA, Anuj
发明人： BALAKRISHNAN, Jaiganesh , LINGAM, Srinivas , BATRA, Anuj
IPC分类号： H04K1/10
CPC分类号： H04L27/265 , H04L25/0202 , H04L27/2605
摘要： A communication system has a first device HOA that transmits an information symbol with a zero-padded suffix (ZPS) and a second device HOB that receives the information symbol with the zero-padded suffix. The second device HOB performs a Fourier transform on at least one sample of the information symbol before a ZPS sample is overlapped-and-added to another sample of the information symbol.
摘要翻译：通信系统具有发送具有零填充后缀（ZPS）的信息符号的第一设备HOA和以零填充后缀接收信息符号的第二设备HOB。第二装置HOB在将ZPS样本重叠并添加到信息符号的另一个样本之前对信息符号的至少一个采样执行傅里叶变换。

3. 发明申请

WO2006081559A3 METHODS AND SYSTEMS FOR DETECTING AND MITIGATING INTERFERENCE FOR A WIRELESS DEVICE 审中-公开
公开(公告)号：WO2006081559A3
公开(公告)日：2006-08-03
申请号：PCT/US2006/003233
申请日：2006-01-30
申请人： TEXAS INSTRUMENTS INCORPORATED , BATRA, Anuj , BALAKRISHNAN, Jaiganesh , LINGAM, Srinivas
发明人： BATRA, Anuj , BALAKRISHNAN, Jaiganesh , LINGAM, Srinivas
IPC分类号： H04B1/69 , H04B1/707 , H04B1/713
摘要： A method for mitigating interference between an Ultra Wideband (UWB) device and a non-UWB device is provided. The method includes, dynamically determining if a frequency channel associated with the non-UWB device is being used. If the frequency channel is being used, the method adjusts a UWB frequency band used for UWB signal transmission. A receiver (312 A, B) receives Ultra Wideband (UWB) frequency band wireless signals from a transmitter (312 A5B). Interference detection logic (318 A, B) detects interfering non-UWB signals transmitted within the Ultra Wideband (UWB) frequency band and asserts an interference detected signal to interference mitigation logic (32OA5B), which configures the transmitter to miti ate the interference.

4. 发明申请

WO2007059489A3 CASCADED RADIX ARCHITECTURE FOR HIGH-SPEED VITERBI DECODER 审中-公开
公开(公告)号：WO2007059489A3
公开(公告)日：2007-05-24
申请号：PCT/US2006/060878
申请日：2006-11-14
申请人： TEXAS INSTRUMENTS INCORPORATED , LINGAM, Srinivas , LEE, Seok-jun , BATRA, Anuj , GOEL, Manish
发明人： LINGAM, Srinivas , LEE, Seok-jun , BATRA, Anuj , GOEL, Manish
IPC分类号： H03M13/03
摘要： A Viterbi decoder includes a branch metric unit (25) for generating branch metrics between two states at two different time periods, a traceback unit (27), a traceback memory (28) and an add-compare-select circuit unit (26). The add-compare-select circuit includes a plurality of cascaded add-compare-select sub-circuits, each add-compare-select sub-circuit calculating a path metric responsive to a plurality of branch metrics from the branch metric unit and a plurality of pre-calculated path metrics, where at least one of the add-compare-select sub-circuits receives a set of pre-calculated path metrics from another one of the add-compare-select sub-circuits.

5. 发明申请

WO2005067670A2 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通道化和数据多路复用的系统和方法
公开(公告)号：WO2005067670A2
公开(公告)日：2005-07-28
申请号：PCT/US2005/000655
申请日：2005-01-10
申请人： TEXAS INSTRUMENTS INCORPORATED , BATRA, Anuj , BALAKRISHNAN, Jaiganesh , DABAK, Anand , BELK, Nathan , GRIFFITH, Danielle
发明人： BATRA, Anuj , BALAKRISHNAN, Jaiganesh , DABAK, Anand , BELK, Nathan , GRIFFITH, Danielle
IPC分类号： H04B1/69 , H04J11/00 , H04J13/00
CPC分类号： H04B1/71632 , H04J13/0022
摘要： A system and method for channelization and data multiplexing in ultrawideband (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 102-128. 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 130, 132, 534, 536, 538, 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分配的频谱被细分为各种频带102-128。定义了一组时间频率代码（TFC），其中每个代码指定给定微微网的顺序数据符号的特定频带组130,132,534,536,538的多个唯一频带相对于时间序列中的一个。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。

6. 发明申请

WO2006007599A2 TIME-DOMAIN WINDOWING OF MULTI-BAND OFDM SYSTEM TO ENABLE SPECTRAL SCULPTING 审中-公开
标题翻译：多带OFDM系统的时域窗口启用频谱分析
公开(公告)号：WO2006007599A2
公开(公告)日：2006-01-19
申请号：PCT/US2005/023840
申请日：2005-07-01
申请人： TEXAS INSTRUMENTS INCORPORATED , BALAKRISHNAN, Jaiganesh , BATRA, Anuj , YAMAGUCHI, Hirohisa
发明人： BALAKRISHNAN, Jaiganesh , BATRA, Anuj , YAMAGUCHI, Hirohisa
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 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 dock (314), the cyclic bl>Ak (314) contiguous with the time-domain samples (312), time-domain window filtering the time-domain samples (312) and the cyclic bl>Ak (314) to form a portion of the wideband orthogonal frequency division multiplex symbol (310), wherein the time-domain window filter is a function $(k) having the property that $(k) + $(k +N fft ) is about equal to a constant θ where N fft is the number of tones, and transmitting the wideband orthogonal frequency division multiplex symbol (310).
摘要翻译：公开了一种无线通信的方法。该方法包括：生成用于宽带正交频分复用符号（310）的多个音调，该音调包括多个连续的零值音调，将音调逆向傅里叶变换为多个时域采样（312），复制作为循环基座（314）的一部分的多个时域样本，与时域采样（312）连续的周期bl（314），对时域采样进行时域窗口滤波（312 ）和周期bl（314）以形成宽带正交频分复用符号（310）的一部分，其中时域窗口滤波器是具有$（k）+ $的属性的函数$（k）（k + N

7. 发明申请

WO2005101694A3 VERSATILE SYSTEM FOR DUAL CARRIER TRANSFORMATION IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 审中-公开
公开(公告)号：WO2005101694A3
公开(公告)日：2005-10-27
申请号：PCT/US2005/011589
申请日：2005-04-06
申请人： TEXAS INSTRUMENTS INCORPORATED , HOSUR, Srinath , BALAKRISHNAN, Jaiganesh , BATRA, Anuj
发明人： HOSUR, Srinath , BALAKRISHNAN, Jaiganesh , BATRA, Anuj
IPC分类号： H04J11/00
摘要： The present invention provides a versatile system for selectively spreading carrier data across multiple carrier paths within an Orthogonal Frequency Division Multiplexing (OFDM) system (200), particularly an ultra-wideband (UWB) system. The present invention provides a data input (202), which passes data to a randomizer (204). The data then passes to a convolutional code function (206), the output of which is punctured by puncturing function (208). An interleaver function (210) receives the punctured code data, and cooperatively operates with a mapper element (218) to prepare the coded data for pre-transmission conversion by an IFFT (220). The mapper element (218) comprises a dual carrier modulation function (216), which associates and transforms two punctured code data elements into a format for transmission on two separate signal tones.

8. 发明申请

WO2008022275A3 PACKET DETECTION, SYMBOL TIMING, CHANNEL LENGTH ESTIMATION AND CHANNEL RESPONSE ESTIMATION FOR WIRELESS SYSTEMS 审中-公开
公开(公告)号：WO2008022275A3
公开(公告)日：2008-02-21
申请号：PCT/US2007/076129
申请日：2007-08-16
申请人： TEXAS INSTRUMENTS INCORPORATED , SINGH, Manoneet , ROH, June, Chul , BALAKRISHNAN, Jaiganesh , BATRA, Anuj
发明人： SINGH, Manoneet , ROH, June, Chul , BALAKRISHNAN, Jaiganesh , BATRA, Anuj
IPC分类号： H04B7/216
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 (702). The method also includes producing a first signal multipath combined signal based upon the first signal match indication (704), and detecting a first peak in the first multipath combined signal (706).

9. 发明申请

WO2005109664A2 FREQUENCY DIVISION MULTIPLE ACCESS WIRELESS COMMUNICATION WITH HIERARCHICAL PREAMBLE 审中-公开
标题翻译：频分多址无线通信与分层前缀
公开(公告)号：WO2005109664A2
公开(公告)日：2005-11-17
申请号：PCT/US2005/015863
申请日：2005-05-05
申请人： TEXAS INSTRUMENTS INCORPORATED , BATRA, Anuj , BALAKRISHNAN, Jaiganesh
发明人： BATRA, Anuj , BALAKRISHNAN, Jaiganesh
IPC分类号： H04B1/707
CPC分类号： H04B1/7075 , H04B1/709
摘要： A wireless device is provided that distinguishes between multiple piconets. The wireless device includes a preamble a component (160, 162, 164, 166) and a correlator (150) component. The preamble component (160, 162, 164, 166) provides a preamble for a wireless fixed frequency interleaving transmission, and the correlator component (150) distinguishes a wireless transmission based on the preamble. A circuit (180) is provided for a wireless receiver to despread a hierarchical sequence made by spreading an M-length sequence with an N-length sequence. The circuit (180) includes a first and second despreaders (185, 190). The first despreader (185) is coupled to a signal input to despread a received signal. The signal is a fixed frequency interleaved transmission. The second despreader (190) is coupled to an output of the first despreader (185). The second despreader (190) despreads the output of the first despreader (185) with a second sequence.
摘要翻译：提供了区分多个微微网的无线设备。无线设备包括前导码，组件（160,162,164,166）和相关器（150）组件。前导码部分（160,162,164,166）提供无线固定频率交织传输的前同步码，并且相关器组件（150）基于前导码区分无线传输。提供了一种用于无线接收机的电路（180），用于对通过扩展具有N长度序列的M长度序列进行扩展而得到的分级序列进行解扩。电路（180）包括第一和第二解扩器（185,190）。第一解扩器（185）耦合到信号输入端以对接收到的信号进行解扩。信号是固定频率交织传输。第二解扩器（190）耦合到第一解扩器（185）的输出端。第二解扩器（190）用第二序列解扩第一解扩器（185）的输出。

10. 发明申请

WO2005104393A2 ADDITIONAL HIERACHICAL PREAMBLE FOR SUPPORT OF FDMA CHANNEL IN A MULTI-BAND OFDM SYSTEM 审中-公开
标题翻译：用于在多频带OFDM系统中支持FDMA通道的附加高级前缀
公开(公告)号：WO2005104393A2
公开(公告)日：2005-11-03
申请号：PCT/US2005/012887
申请日：2005-04-15
申请人： TEXAS INSTRUMENTS INCORPORATED , BATRA, Anuj , BALAKRISHNAN, Jaiganesh
发明人： BATRA, Anuj , BALAKRISHNAN, Jaiganesh
IPC分类号： H04B1/707
CPC分类号： H04L27/2613 , H04B1/709 , H04J13/107 , H04L5/0007 , H04L5/0016 , H04L5/0032 , H04L5/0048 , H04L5/0062 , H04L5/0092 , H04L25/0226 , H04L25/03828
摘要： A wireless device (10, 12) that distinguishes between multiple piconets is provided. The wireless device (10, 12) includes a preamble component operable to provide a preamble for a wireless fixed frequency interleaving transmission. The wireless device (10, 12) also includes a correlator component operable to distinguish a wireless transmission based on the preamble. The preamble is based on a 128-length sequence (120, 136, 144), formed using a 16-length sequence and an 8-length sequence. The 16-length sequence is selected from the group consisting of a first 16-length sequence (110, a second 16-length sequence (132), and a third 16-length sequence 140). The 8-length sequence is selected from the group consisting of a first 8-length sequence (112), a second 8-length sequence (134), and a third 8-length sequence (144).
摘要翻译：提供了区分多个微微网的无线设备（10,12）。无线设备（10,12）包括可用于为无线固定频率交织传输提供前置码的前同步码组件。无线设备（10,12）还包括可用于基于前导码区分无线传输的相关器组件。前导码基于使用16长度序列和8长度序列形成的128长度序列（120,136,144）。 16长度序列选自由第一16长度序列（110，第二16长度序列（132）和第三16长度序列140）组成的组。 8长度序列选自第一个8长度序列（112），第二个8长度序列（134）和第三个8长度序列（144）。

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