专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US08416719B2 Generating an estimated non-linear echo signal 有权
公开(公告)号：US08416719B2
公开(公告)日：2013-04-09
申请号：US12077672
申请日：2008-03-20
申请人： Dariush Dabiri
发明人： Dariush Dabiri
IPC分类号： H04B3/20
CPC分类号： H04B3/231
摘要： Embodiments of a method and apparatus for generating an estimated non-linear echo signal are disclosed. One method includes receiving a plurality of data inputs. The plurality of data inputs are partitioned into subsets. A weight vector is computed for each of the subsets. A vector of addresses to memory locations is computed for each of the subsets. Values of interpolants are accessed at the memory locations (interpolation sites) based on the vector of addresses for each of the subsets. The estimated non-linear echo signal based is calculated on the values of the interpolants and the weight vector corresponding to each subset.

12. 发明授权

US08295214B2 Reducing transmit signal components of a receive signal of a transceiver 有权
标题翻译：减少收发器的接收信号的发送信号分量
公开(公告)号：US08295214B2
公开(公告)日：2012-10-23
申请号：US12765097
申请日：2010-04-22
申请人： Gaurav Chandra , Moshe Malkin , Dariush Dabiri
发明人： Gaurav Chandra , Moshe Malkin , Dariush Dabiri
IPC分类号： H04B3/20
CPC分类号： H04B3/23 , H04L5/1461 , H04M9/082
摘要： Embodiments of a method and apparatus of reducing transmit signal components of a receive signal of a transceiver are disclosed. One method includes generating a transmit signal by passing a pre-driver transmit signal through a transmit driver. An echo cancellation signal is generated by passing the pre-driver transmit signal through an echo cancellation driver. A residual echo signal is generated by passing a pre-driver residual echo cancellation signal through a residual echo cancellation driver. The transceiver simultaneously transmits the transmit signal, and receiving the receive signal. At least a portion of an echo signal of the receive signal is canceled by summing the echo cancellation signal with the receive signal. At least another portion of the cancellation echo signal of the receive signal is canceled by summing the residual echo cancellation signal with the receive signal.
摘要翻译：公开了一种降低收发器的接收信号的发射信号分量的方法和装置的实施例。一种方法包括通过将预驱动器发送信号通过发送驱动器来产生发送信号。通过将预驱动器发送信号通过回波消除驱动器来产生回波消除信号。通过将预驱动器残留回声消除信号通过残余回声消除驱动器来产生残留回波信号。收发器同时发送发送信号，并接收接收信号。通过将回波消除信号与接收信号相加来消除接收信号的回波信号的至少一部分。接收信号的消除回波信号的至少另一部分通过将残差回波消除信号与接收信号相加来消除。

13. 发明申请

US20100058143A1 Efficient Decoding 有权
标题翻译：高效解码
公开(公告)号：US20100058143A1
公开(公告)日：2010-03-04
申请号：US12613627
申请日：2009-11-06
申请人： Dariush Dabiri , Nitin Barot
发明人： Dariush Dabiri , Nitin Barot
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H03M13/1137 , H03M13/1111 , H03M13/114 , H03M13/616
摘要： Embodiments of a method and apparatus for decoding signals are disclosed. An embodiment of a decoder includes means for generating bits representing received signals, and beliefs representing an associated reliability of each bit. A bit node computation block receives the bits and associated beliefs, and generates a plurality of bit node messages. A plurality of M serially-connected pipeline stages receive the bit node messages and after M decoding cycles, and generate a plurality of check node messages once per decoding cycle, wherein for each iteration cycle, each of the M serially-connected pipeline stages performs check node computations using all of J component codes, wherein each one of the M serially-connected pipeline stages performs check node computations once per decoding cycle using a single component code that is different that component codes used for all other of the M serially-connected pipeline stages, wherein J is at least as great as M, and wherein each iteration includes M decoding cycles.
摘要翻译：公开了用于解码信号的方法和装置的实施例。解码器的实施例包括用于产生表示接收信号的比特的装置，以及表示每个比特的相关可靠性的信念。比特节点计算块接收比特和相关联的信念，并且生成多个比特节点消息。多个M个串行连接的流水线级接收比特节点消息，并且在M个解码周期之后，并且每解码周期生成多个校验节点消息，其中对于每个迭代周期，每个M个串行连接的流水线级执行检查使用所有J个分量代码的节点计算，其中M个串行连接的流水线级中的每一个使用不同于用于所有其他M个串行连接的流水线的分量代码来执行每个解码周期一次的校验节点计算其中J至少与M一样大，并且其中每个迭代包括M个解码周期。

14. 发明申请

US20060047857A1 Low-power receiver decoding 有权
标题翻译：低功耗接收机解码
公开(公告)号：US20060047857A1
公开(公告)日：2006-03-02
申请号：US10926699
申请日：2004-08-26
申请人： Dariush Dabiri , Jose Tellado
发明人： Dariush Dabiri , Jose Tellado
IPC分类号： G06F15/16
CPC分类号： H03M13/37 , H04L1/0045 , H04L1/0057
摘要： Embodiments of a method and apparatus for decoding an Ethernet signal are disclosed. The method includes receiving an Ethernet bit stream. The bit stream is at least one of low-complexity decoded or high-complexity decoded. If the bit stream fails a low-complexity decoding test, then the bit stream is high-complexity decoded. The low-complexity decoding and high complexity decoding are iteratively repeated until the bit stream passes the low-complexity decoding test.
摘要翻译：公开了用于解码以太网信号的方法和装置的实施例。该方法包括接收以太网比特流。比特流是低复杂度解码或高复杂度解码中的至少一个。如果比特流失败了低复杂度的解码测试，则比特流是高复杂度的解码。迭代重复低复杂度解码和高复杂度解码，直到比特流通过低复杂度解码测试。

15. 发明授权

US06549591B1 Method and apparatus for digital interference rejection 有权
标题翻译：用于数字干扰抑制的方法和装置
公开(公告)号：US06549591B1
公开(公告)日：2003-04-15
申请号：US09712403
申请日：2000-11-13
申请人： Christopher Keate , Ravi Bhaskaran , Dariush Dabiri
发明人： Christopher Keate , Ravi Bhaskaran , Dariush Dabiri
IPC分类号： H04L2508
CPC分类号： H04B1/123
摘要： Digital interference rejection of a signal is accomplished by first converting the signal to digital. Then a second signal is generated and mixed with the first signal. This combined signal is then filtered. The signal can then be scaled as needed, resulting in a finely tuned, interference free signal.
摘要翻译：信号的数字干扰抑制是通过首先将信号转换为数字来实现的。然后产生第二信号并与第一信号混合。然后对该组合信号进行滤波。然后可以根据需要对信号进行缩放，从而产生微调，无干扰的信号。

16. 发明申请

US20120014416A1 Narrowband Interference Cancellation Method and Circuit 有权
标题翻译：窄带干扰消除方法和电路
公开(公告)号：US20120014416A1
公开(公告)日：2012-01-19
申请号：US12952150
申请日：2010-11-22
申请人： Dariush Dabiri
发明人： Dariush Dabiri
IPC分类号： H04B1/707
CPC分类号： H03H21/0021 , H03H21/0012
摘要： A narrowband interference (NBI) canceller is coupled to an A/D converter to receive an input signal and supply an NBI-canceled signal to an error correcting decoder. In the NBI canceller, a first arithmetic unit receives the input signal and a predicted-interference signal, and supplies a difference thereof as the interference-canceled signal. A slicer receives the interference-canceled signal and supplies a decision signal. A second arithmetic unit subtracts the decision signal from the input signal to generate a noise signal. A coarse frequency estimator receives the noise signal and analyzes the frequency spectrum to generate a coarse estimate of a fundamental frequency of the NBI. The coarse estimate is used by an adaptive narrowband interference predictor to generate the predicted-interference signal while adaptively tracking the narrowband interference. Use of the NBI canceller in a transceiver can eliminate link drop caused by operation of wireless devices that generate EMI in a cable.
摘要翻译：窄带干扰（NBI）消除器耦合到A / D转换器以接收输入信号，并向纠错解码器提供NBI消除的信号。在NBI消除器中，第一算术单元接收输入信号和预测干扰信号，并将其差作为干扰消除信号。切片器接收干扰消除信号并提供判决信号。第二算术单元从输入信号中减去判定信号以产生噪声信号。粗略频率估计器接收噪声信号并分析频谱以产生NBI的基频的粗略估计。自适应窄带干扰预测器使用粗略估计来产生预测干扰信号，同时自适应地跟踪窄带干扰。在收发器中使用NBI消除器可以消除在电缆中产生EMI的无线设备的操作造成的链路丢失。

17. 发明授权

US07957456B2 Selection of filter coefficients for tranceiver non-linearity signal cancellation 有权
标题翻译：滤波器系数的选择用于收发器非线性信号消除
公开(公告)号：US07957456B2
公开(公告)日：2011-06-07
申请号：US11725528
申请日：2007-03-19
申请人： Dariush Dabiri , Jose Tellado
发明人： Dariush Dabiri , Jose Tellado
IPC分类号： H04B1/38 , H03H7/40
CPC分类号： H04B1/525 , H03H17/0261 , H04L25/03038
摘要： Embodiments of a method and apparatus for selecting coefficients of a non-linear filter are disclosed. The non-linear filter receives a transmit signal and generates a non-linear replica signal of a transmit DAC of a transceiver. The method include applying a plurality of periodic test pattern signals to inputs of the transmit DAC, wherein the periodic test pattern signals include a stream of symbols. Receive symbols are collected at an output of a receiver ADC of the transceiver resulting from the plurality of periodic test pattern signals. A non-linear map is generated that provides a value for each of n consecutive symbols input to the transmit DAC. Coefficients of the non-linear filter are selected based on the non-linear map.
摘要翻译：公开了一种用于选择非线性滤波器系数的方法和装置的实施例。非线性滤波器接收发射信号并产生收发器的发射DAC的非线性复制信号。该方法包括将多个周期性测试模式信号应用于发射DAC的输入，其中周期性测试模式信号包括符号流。在多个周期性测试图形信号产生的收发器的接收器ADC的输出端收集接收符号。生成非线性映射，为输入到发送DAC的n个连续符号中的每一个提供一个值。基于非线性映射来选择非线性滤波器的系数。

18. 发明授权

US06782043B1 Method and apparatus for estimating the length of a transmission line 失效
标题翻译：用于估计传输线长度的方法和装置
公开(公告)号：US06782043B1
公开(公告)日：2004-08-24
申请号：US09484630
申请日：2000-01-18
申请人： Hossein Dehghan , Dariush Dabiri , Jing Li
发明人： Hossein Dehghan , Dariush Dabiri , Jing Li
IPC分类号： H04B1700
CPC分类号： H04B3/46
摘要： A method and apparatus for estimating the length of a transmission line is provided. The transmission line extends between a transmitter and a receiver and has a low-pass filter characteristic and an impulse response. The method and apparatus receive a data signal from the transmission line at the receiver and estimate the length of the transmission line as a function of the received data signal and the impulse response.
摘要翻译：提供了一种用于估计传输线的长度的方法和装置。传输线在发射机和接收机之间延伸，具有低通滤波器特性和脉冲响应。该方法和装置从接收机处的传输线路接收数据信号，并根据接收的数据信号和脉冲响应估计传输线路的长度。

19. 发明授权

US6122325A Method and system for detecting and correcting in-phase/quadrature imbalance in digital communication receivers 失效
标题翻译：用于检测和校正数字通信接收机的同相/正交不平衡的方法和系统
公开(公告)号：US6122325A
公开(公告)日：2000-09-19
申请号：US18602
申请日：1998-02-04
申请人： Advait M. Mogre , Dariush Dabiri , Shobana Swamy , Qian Cheng
发明人： Advait M. Mogre , Dariush Dabiri , Shobana Swamy , Qian Cheng
IPC分类号： H04L27/00 , H04L5/12
CPC分类号： H04L27/0014 , H04L2027/0016 , H04L2027/0024
摘要： The invention provides a method and system for correcting imbalance in in-phase and quadrature components of a modulated received signal. The method includes assuming a signal imbalance to exist in the received signal, the signal imbalance having an amplitude imbalance and a phase imbalance, generating an amplitude imbalance correction factor and a phase imbalance correction factor to lessen the signal imbalance, and re-evaluating the amplitude and phase imbalance correction factors over a set of readings of the in-phase and quadrature components until the signal imbalance is minimized.
摘要翻译：本发明提供一种用于校正调制接收信号的同相和正交分量中的不平衡的方法和系统。该方法包括：假设信号不平衡存在于接收信号中，信号不平衡具有振幅不平衡和相位不平衡，产生幅度不平衡校正因子和相位不平衡校正因子以减小信号不平衡，并重新评估振幅和相位不平衡校正因子超过一组同相和正交分量的读数，直到信号不平衡最小化为止。

20. 发明申请

US20130072143A1 NARROWBAND INTERFERENCE CANCELLATION METHOD AND CIRCUIT 审中-公开
标题翻译：窄带干扰消除方法和电路
公开(公告)号：US20130072143A1
公开(公告)日：2013-03-21
申请号：US13674643
申请日：2012-11-12
申请人： Dariush Dabiri
发明人： Dariush Dabiri
IPC分类号： H04B1/10
CPC分类号： H03H21/0021 , H03H21/0012
摘要： A narrowband interference (NBI) canceller is coupled to an A/D converter to receive an input signal and supply an NBI-canceled signal to an error correcting decoder. In the NBI canceller, a first arithmetic unit receives the input signal and a predicted- interference signal, and supplies a difference thereof as the interference-canceled signal. A slicer receives the interference-canceled signal and supplies a decision signal. A second arithmetic unit subtracts the decision signal from the input signal to generate a noise signal. A coarse frequency estimator receives the noise signal and analyzes the frequency spectrum to generate a coarse estimate of a fundamental frequency of the NBI. The coarse estimate is used by an adaptive narrowband interference predictor to generate the predicted-interference signal while adaptively tracking the narrowband interference. Use of the NBI canceller in a transceiver can eliminate link drop caused by operation of wireless devices that generate EMI in a cable.
摘要翻译：窄带干扰（NBI）消除器耦合到A / D转换器以接收输入信号，并向纠错解码器提供NBI消除的信号。在NBI消除器中，第一算术单元接收输入信号和预测干扰信号，并将其差作为干扰消除信号。切片器接收干扰消除信号并提供判决信号。第二算术单元从输入信号中减去判定信号以产生噪声信号。粗略频率估计器接收噪声信号并分析频谱以产生NBI的基频的粗略估计。自适应窄带干扰预测器使用粗略估计来产生预测干扰信号，同时自适应地跟踪窄带干扰。在收发器中使用NBI消除器可以消除在电缆中产生EMI的无线设备的操作造成的链路丢失。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式