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    • 5. 发明授权
    • Selection of filter coefficients for tranceiver non-linearity signal cancellation
    • 滤波器系数的选择用于收发器非线性信号消除
    • US07957456B2
    • 2011-06-07
    • US11725528
    • 2007-03-19
    • Dariush DabiriJose Tellado
    • Dariush DabiriJose Tellado
    • H04B1/38H03H7/40
    • H04B1/525H03H17/0261H04L25/03038
    • 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.
    • 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。
    • 7. 发明授权
    • Method and system for evaluating a wireless link
    • 用于评估无线链路的方法和系统
    • US07649868B2
    • 2010-01-19
    • US11027031
    • 2004-12-30
    • Robert W. HeathJose Tellado
    • Robert W. HeathJose Tellado
    • H04W4/00
    • H04L1/0025
    • 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.
    • 在多址通信系统中的第一发射机和第一接收机之间的无线链路通过在第一发射机处接收预期用于第二接收机并且以与当前的不同的第二传输模式发送的信息来评估 并且获得在第一接收机处接收并用于第二接收机的信息的误差测量。 然后使用所获得的误差测量来确定第二传输模式是否是可接受的传输模式。 在一个实施例中,如果确定第二传输模式是可接受的,则第一接收机的当前传输模式可以由第二传输模式代替。 在一个实施例中,仅当第二传输模式是比当前传输的“较高”传输模式时,才将当前传输模式替换为第二传输模式。
    • 8. 发明授权
    • Transceiver power backoff
    • 收发器功率回馈
    • US07646699B2
    • 2010-01-12
    • US11303364
    • 2005-12-16
    • Jose TelladoSanjay Kasturia
    • Jose TelladoSanjay Kasturia
    • H04J1/12
    • H04B1/0475H04B3/487H04M3/34
    • A device and method of setting transmit power backoff of a transceiver within a network is disclosed. The method includes estimating a channel loss of a channel of the transceiver, obtaining channel loss information, the channel loss information including estimates of channel loss of other channels of the network, obtaining crosstalk information, the crosstalk information including estimates of crosstalk between the channel and other channels of the network, and setting the power backoff based on the channel loss of the channel, the channel information, and the crosstalk information.
    • 公开了一种在网络内设置收发机的发射功率回退的装置和方法。 该方法包括估计收发信道的信道丢失,获得信道丢失信息,信道丢失信息,包括网络其他信道的信道丢失估计,获得串扰信息,串扰信息包括信道和 网络的其他信道,并且基于信道的信道丢失,信道信息和串扰信息来设置功率回退。
    • 10. 发明申请
    • Receiver ADC clock delay based on echo signals
    • 基于回波信号的接收器ADC时钟延迟
    • US20070042721A1
    • 2007-02-22
    • US11205615
    • 2005-08-17
    • Sandeep GuptaJose Tellado
    • Sandeep GuptaJose Tellado
    • H04B1/38
    • H04B3/23
    • A device and method for a full-duplex transceiver is disclosed. The transceiver includes a transmitter DAC coupled to a transmission channel. The transmit DAC converting a digital transmission signal into an analog transmission signal. The transceiver further includes a receiver connected to the transmission channel. The receiver receives a desired signal and an echo signal, in which the echo signal includes at least a portion of the analog transmission signal. The receiver includes a receiver ADC, a programmable delay line for adjustably delaying a clock signal of the ADC, and a receiver processing circuit for adjusting the delay of the clock signal based at least in part upon the echo signal.
    • 公开了一种用于全双工收发器的装置和方法。 收发器包括耦合到传输信道的发射机DAC。 发送DAC将数字传输信号转换为模拟传输信号。 收发机还包括连接到传输信道的接收机。 接收器接收期望的信号和回波信号,其中回波信号包括模拟传输信号的至少一部分。 接收器包括接收器ADC,用于可调延迟ADC的时钟信号的可编程延迟线,以及用于至少部分地基于回波信号调整时钟信号的延迟的接收机处理电路。