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71. 发明申请

US20070165734A1 Method and apparatus for domain transformation multiple signal processing 有权
标题翻译：用于域变换多信号处理的方法和装置
公开(公告)号：US20070165734A1
公开(公告)日：2007-07-19
申请号：US11702348
申请日：2007-02-05
申请人： Jose Tellado , Sanjay Kasturia , Eran Cohen
发明人： Jose Tellado , Sanjay Kasturia , Eran Cohen
IPC分类号： H04K1/10
CPC分类号： H04B3/32 , H04L25/03006
摘要： A method and apparatus of joint processing a plurality of digital signal streams is disclosed. The method includes transforming a plurality of the digital signal streams from an original domain to a lower complexity processing domain. The transformed plurality of digital signal streams are joint processed, wherein the joint processing includes multiplying samples of the plurality of transformed digital signal streams by a processing matrix. The joint processed signal streams are inverse transformed back to the original domain. Diagonal elements of the processing matrix are adaptively selected to cancel transmission echo signals of the plurality digital signal streams introduced during transmission of the plurality digital signal streams depending upon signal coupling of the plurality of digital signal streams.
摘要翻译：公开了一种联合处理多个数字信号流的方法和装置。该方法包括将多个数字信号流从原始域转换为较低复杂度的处理域。经变换的多个数字信号流被联合处理，其中联合处理包括通过处理矩阵将多个经变换的数字信号流的采样相乘。联合处理的信号流被反向变换回原始域。根据多个数字信号流的信号耦合，自适应地选择处理矩阵的对角元件以消除在多个数字信号流的传输期间引入的多个数字信号流的传输回波信号。

72. 发明申请

US20050135503A1 System and method for adjusting a power level of a transmission signal 审中-公开
公开(公告)号：US20050135503A1
公开(公告)日：2005-06-23
申请号：US11006403
申请日：2004-12-06
申请人： Shilpa Talwar , Jose Tellado
发明人： Shilpa Talwar , Jose Tellado
IPC分类号： H04B7/005 , H04L27/26 , H04L27/34 , H04K1/02
CPC分类号： H04W52/52 , H04L27/2624 , H04L27/3411
摘要： The invention includes an apparatus and a method for adjusting a power level of a transmission signal for minimal distortion. The method includes modulating the transmission signal. The modulated transmission signal is processed to reduce a peak to average ratio of the modulated transmission signal based upon modulation parameters of the modulated transmission signal. The power level of the modulated transmission signal is adjusted according to the peak to average ratio of the modulated transmission signal. The transmission signal is amplified and transmitted.

73. 发明申请

US20050117543A1 Method and system for evaluating a wireless link 失效
公开(公告)号：US20050117543A1
公开(公告)日：2005-06-02
申请号：US11027031
申请日：2004-12-30
申请人： Robert Heath , Jose Tellado
发明人： Robert Heath , Jose Tellado
IPC分类号： H04L12/56 , H04W24/00 , H04W28/04 , H04W74/00 , H04Q7/00 , H04B7/212 , H04Q7/28
CPC分类号： H04L1/0025
摘要： A wireless link between a first transmitter and a first receiver in a multiple access communications system is evaluated by receiving, at the first transmitter, information that is intended for a second receiver and that is transmitted in a second transmission mode that is different from the current transmission mode and obtaining an error measure for the information that is received at the first receiver and intended for the second receiver. The obtained error measure is then used to determine if the second transmission mode is an acceptable transmission mode. In an embodiment, if the second transmission mode is determined to be acceptable, then the current transmission mode of the first receiver can be replaced by the second transmission mode. In an embodiment, the current transmission mode is replaced by the second transmission mode only if the second transmission mode is a “higher” transmission mode than the current transmission.

74. 发明申请

US20050094583A1 Full duplex transceiver 有权
标题翻译：全双工收发器
公开(公告)号：US20050094583A1
公开(公告)日：2005-05-05
申请号：US10699761
申请日：2003-11-03
申请人： Sandeep Gupta , Sanjay Kasturia , Jose Tellado
发明人： Sandeep Gupta , Sanjay Kasturia , Jose Tellado
IPC分类号： H04L5/14 , H04L25/14 , H04J1/12 , H04B3/20
CPC分类号： H04L25/14 , H04L5/1423
摘要： The invention includes a full duplex transceiver for transmitting and receiving communication signals. The transceiver includes 1 to N sample and hold circuits. Each sample and hold circuit receives a first signal that includes a far-end signal, and in some cases an echo signal, and in some cases alternatively or additionally cross-talk signals. The transceiver additionally includes a plurality of subtraction circuits. Each subtraction circuit receives an output of at least one of the sample and hold circuits. Each subtraction circuit subtracts at least a fraction of a replica signal from at least a fraction of the output of the at least one of the sample and hold circuits. The subtraction circuits generate an output that represent the far-end signal with substantially reduced echo and/or cross-talk interference, and is available for additional receiver processing.
摘要翻译：本发明包括用于发送和接收通信信号的全双工收发器。收发器包括1到N个采样和保持电路。每个采样和保持电路接收包括远端信号的第一信号，并且在某些情况下接收回波信号，并且在一些情况下接收或附加的串扰信号。收发器还包括多个减法电路。每个减法电路接收至少一个采样和保持电路的输出。每个减法电路从至少一个采样和保持电路的输出的至少一部分中减去副本信号的至少一部分。减法电路产生表示具有显着减少的回声和/或串扰干扰的远端信号的输出，并且可用于额外的接收机处理。

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