公开(公告)号：US20020018529A1

公开(公告)日：2002-02-14

申请号：US09885878

申请日：2001-06-20

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Anand G. Dabak ,  Eko N. Onggosanusi ,  Timothy M. Schmidl ,  Alan Gatherer

IPC: H04B007/06

CPC classification number: H04L1/0631 ,  H04B1/7115 ,  H04B7/0613 ,  H04J13/00 ,  H04J13/0048 ,  H04L1/0065 ,  H04L1/0071 ,  H04L1/0618

Abstract: A wireless communication network (10) comprising a wireless transmitter (12). The transmitter comprises a plurality of antennas (AT11, AT12), wherein each of the plurality of antennas is operable for transmitting signals. The transmitter also comprises, for each of a plurality of different user channels (Dn), circuitry (22n) for providing a plurality of groups of symbols in a first symbol group sequence (D1n). The transmitter also comprises, for each of the plurality of different user channels, circuitry (241n) for forming a first modulated symbol group sequence for the user channel by modulating the symbols in the first symbol group sequence for the user channel with a unique code that corresponds to the user channel and distinguishes the user channel from each other of the plurality of different user channels and circuitry (261) for combining the first modulated symbol group sequences and providing them for transmission by a first antenna (AT11). The transmitter also comprises, for each of the plurality of different user channels, circuitry (22n) for forming a second symbol group sequence (D2n) by re-ordering the groups of symbols in the first symbol group sequence and further by time reversing symbols in at least some of the groups of symbols. Also for each of the plurality of different user channels, the transmitter comprises circuitry (242n) for forming a second modulated symbol group sequence for the user channel by modulating the symbols in the second symbol group sequence for the user channel with a unique code that corresponds to the user and distinguishes the user from each other of the plurality of different user channels. Finally, the transmitter comprises circuitry (262) for combining the second modulated symbol group sequences and providing them for transmission by the second antenna (AT12).

Abstract translation: 一种包括无线发射机（12）的无线通信网络（10）。 发射机包括多个天线（AT11，AT12），其中多个天线中的每一个可操作用于发射信号。 对于多个不同用户信道（Dn）中的每一个，发射机还包括用于在第一符号组序列（D1n）中提供多个符号组的电路（22n）。 发射机还包括用于多个不同用户信道中的每一个的电路（241n），用于通过用唯一码调制用户信道的第一符号组序列中的符号来形成用于用户信道的第一调制符号组序列， 对应于用户信道并且区分多个不同用户信道中的用户信道和用于组合第一调制符号组序列并将其提供给第一天线（AT11）的传输的电路（261）。 发射机还包括用于多个不同用户信道中的每一个的电路（22n），用于通过重新排序第一符号组序列中的符号组，并进一步通过时间反转符号来形成第二符号组序列（D2n） 至少一些符号组。 对于多个不同的用户信道中的每一个，发射机包括电路（242n），用于通过用相应的唯一码调制用户信道的第二符号组序列中的符号来形成用于用户信道的第二调制符号组序列 并且将用户与多个不同用户信道中的用户区分开。 最后，发射机包括用于组合第二调制符号组序列并将其提供给第二天线（AT12）的传输的电路（262）。

公开(公告)号：US20040203456A1

公开(公告)日：2004-10-14

申请号：US10260761

申请日：2002-09-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Eko N. Onggosanusi ,  Anand G. Dabak ,  Timothy M. Schmidl

IPC: H04B017/00 ,  H04Q007/20 ,  H04B007/005 ,  H04B007/01 ,  H04B007/015 ,  H04B015/00

CPC classification number: H04L25/03038 ,  H04L1/06 ,  H04L1/16 ,  H04L1/1812 ,  H04L25/0228 ,  H04L25/067 ,  H04L2025/0342 ,  H04L2025/03624 ,  Y10S370/913

Abstract: A wireless receiver (30x) for receiving signals from an interference-limited transmitter in an interference-limited system comprising at least one transmit antenna, wherein the signals comprise a plurality of symbols. The receiver comprises at least one receive antenna (RATx) and collection circuitry (38). The collection circuitry is coupled to the at least one receive antenna and is for collecting a plurality of signal samples from the at least one receive antenna. The plurality of signal samples comprise at least one symbol and interference effects between different symbols communicated from the transmitter to the receiver. The receiver also comprises suppression circuitry (44 or 60), coupled to the collection circuitry, for suppressing the interference effects. The receiver also comprises circuitry (46, 48, 50) for receiving signals from the suppression circuitry and for providing estimates of a group of bits and detection circuitry (52) for detecting an error in a packet that comprises the group of bits. Lastly, the receiver also comprises circuitry (52) for requesting the transmitter to transmit a retransmission of a packet in response to the detection circuitry detecting the error.

Abstract translation: 一种无线接收器（30x），用于在受干扰限制的系统中接收来自干扰限制发射机的信号，所述干扰受限系统包括至少一个发射天线，其中所述信号包括多个符号。 接收机包括至少一个接收天线（RATx）和收集电路（38）。 收集电路耦合到所述至少一个接收天线，并用于从所述至少一个接收天线收集多个信号样本。 多个信号样本包括从发射机到接收机之间传送的不同符号之间的至少一个符号和干扰效应。 接收机还包括耦合到收集电路的用于抑制干扰效应的抑制电路（44或60）。 接收机还包括用于从抑制电路接收信号并用于提供一组比特的估计和用于检测包含该比特组的分组中的错误的检测电路（52）的电路（46,48,50）。 最后，接收机还包括电路（52），用于响应于检测电路检测错误，请求发送器发送分组的重传。

公开(公告)号：US20040127164A1

公开(公告)日：2004-07-01

申请号：US10699707

申请日：2003-11-03

Applicant: Texas Instruments Incorporated

Inventor： Antonio F. Mondragon-Torres ,  Steven P. Pekarich ,  Timothy M. Schmidl ,  Gibong Jeong ,  Aris Papasakellariou ,  Anand G. Dabak ,  Eko N. Onggosanusi

IPC: H04B017/00

CPC classification number: H04L25/03006 ,  H04B1/7103 ,  H04B1/7117 ,  H04B2201/7071 ,  H04L25/03987 ,  H04L2025/03401 ,  H04L2025/0342 ,  H04L2025/03509 ,  H04L2025/03535

Abstract: A reconfigurable chip level equalizer having circuitry that restores signal orthogonality and eliminates channel interference for a wireless transmitted signal. In at least some embodiments, the reconfigurable chip level equalizer comprises two or more adaptive equalizers, a plurality of operational blocks that interconnect the two or more adaptive equalizers, and a control mechanism that configures the two or more adaptive equalizers and operational blocks according to different signal delay profiles.

Abstract translation: 具有恢复信号正交性并消除无线发射信号的信道干扰的电路的可重构芯片级均衡器。 在至少一些实施例中，可重新配置的芯片级均衡器包括两个或多个自适应均衡器，互连两个或多个自适应均衡器的多个操作块，以及根据不同的配置两个或多个自适应均衡器和操作块的控制机制 信号延迟分布。