公开(公告)号：US07450635B2

公开(公告)日：2008-11-11

申请号：US11150925

申请日：2005-06-13

申请人： Huaiyu (Hanks) Zeng ,  Baoguo Yang ,  Arkady Molev-Shteiman ,  Arie Heiman ,  Yue Chen ,  Nelson R. Sollenberger

发明人： Huaiyu (Hanks) Zeng ,  Baoguo Yang ,  Arkady Molev-Shteiman ,  Arie Heiman ,  Yue Chen ,  Nelson R. Sollenberger

IPC分类号： H03H7/30 ,  H03K5/156 ,  H04B1/10

CPC分类号： H04L25/03171 ,  H04L25/03133

摘要： The present invention provides a multi-branch equalizer processing module operable to cancel interference associated with received radio frequency (RF) burst(s). This multi-branch equalizer processing module includes both a first equalizer processing branch and a second equalizer processing branch. The first equalizer processing branch is operable to be trained based upon known training sequences and equalize the received RF burst. This results in soft samples or decisions which in turn may be converted to data bits. The soft samples are processed with a de-interleaver and channel decoder, where the combination is operable to produce a decoded frame of data bits from the soft samples. A re-encoder may re-encode the decoded frame to produce re-encoded or at least partially re-encoded data bits. An interleaver then processes the at least partially re-encoded data bits to produce and at least partially re-encoded burst. The second equalizer processing branch uses the at least partially re-encoded data bits to train linear equalizer(s) within the second equalizer processing branch. A buffer may initially store the received RF burst(s), which are retrieved and equalized by the second equalizer processing branch once the linear equalizer(s) are trained. This results in alternate soft samples or decisions which in turn may be converted to alternate data bits. The alternate soft samples are processed with the de-interleaver and channel decoder, where the combination is operable to produce an alternate decoded frame of data bits from the alternate soft samples. This allows interfering signals to be cancelled and more accurate processing of the received RF bursts to occur.

摘要翻译： 本发明提供一种多分支均衡器处理模块，其可操作以消除与接收的射频（RF）突发相关联的干扰。 该多分支均衡器处理模块包括第一均衡器处理分支和第二均衡器处理分支。 第一均衡器处理分支可操作以基于已知的训练序列进行训练，并均衡所接收的RF突发。 这导致软样本或决策，而这些样本或决定又可以转换为数据位。 软采样用解交织器和信道解码器处理，其中组合可操作以从软样本产生解码的数据比特帧。 重新编码器可以对解码的帧进行重新编码，以产生重新编码或至少部分重新编码的数据比特。 交织器然后处理至少部分重新编码的数据比特以产生和至少部分地重新编码突发。 第二均衡器处理分支使用至少部分重新编码的数据比特来训练第二均衡器处理分支内的线性均衡器。 缓冲器可以初始地存储所接收的RF突发，一旦训练了线性均衡器，其将被第二均衡器处理分支检索和均衡。 这导致交替的软样本或决定，这又可以转换为备用数据位。 用去交织器和信道解码器处理替代软样本，其中组合可操作以从备选软样本产生替代解码的数据比特帧。 这允许消除干扰信号并且发生接收的RF突发的更精确的处理。

公开(公告)号：US20080146266A1

公开(公告)日：2008-06-19

申请号：US11706461

申请日：2007-02-15

申请人： Nelson R. Sollenberger ,  Weidong Li

发明人： Nelson R. Sollenberger ,  Weidong Li

IPC分类号： H04M1/00

CPC分类号： H04M1/253 ,  H04L67/06 ,  H04M1/72522 ,  H04M2250/02 ,  H04M2250/06 ,  H04W28/14

摘要： A voice data and RF integrated circuit (IC) includes an RF transceiver module that produces received data based on a received RF signal and that produces a transmitted RF signal based on transmit data. A memory module includes a first read only memory (ROM) segment for storing a first plurality of operational instructions, and a first random access memory (RAM) segment for storing a second plurality of operational instructions. A first processing module executes the plurality of operational instructions that include baseband processing to generate input data from the received data, and to produce the transmit data from input data. A first memory interface provides direct downloading of the second plurality of operational instructions from the external memory to the first RAM segment.

摘要翻译： 语音数据和RF集成电路（IC）包括RF收发器模块，其基于接收的RF信号产生接收的数据，并且基于发送数据产生发送的RF信号。 存储器模块包括用于存储第一多个操作指令的第一只读存储器（ROM）段和用于存储第二多个操作指令的第一随机存取存储器（RAM）段。 第一处理模块执行包括基带处理的多个操作指令，以从接收到的数据生成输入数据，并从输入数据产生发送数据。 第一存储器接口提供将第二多个操作指令从外部存储器直接下载到第一RAM段。

公开(公告)号：US07277688B2

公开(公告)日：2007-10-02

申请号：US10811579

申请日：2004-03-29

申请人： Baoguo Yang ,  Nelson R. Sollenberger

发明人： Baoguo Yang ,  Nelson R. Sollenberger

IPC分类号： H04B1/10

CPC分类号： H03D3/008

摘要： A wireless receiver includes a local oscillator, a mixer, a band pass filter, a DC offset determination module, a DC offset correction module, a subtraction module, and a down converter. The local oscillator produces a local oscillation that a mixer uses to down convert the RF information signal to produce a Very Low Intermediate Frequency (VLIF) information signal at a VLIF and having a DC offset. The band pass filter band pass filters the VLIF information signal. The DC offset determination module produces a DC offset indication for the VLIF information signal. The DC offset correction module generates a DC offset correction based upon the DC offset indication. The subtraction module subtracts the DC offset correction from the VLIF information signal to substantially remove a DC offset of the post-filtered VLIF information signal. The down converter down converts the VLIF information signal to a baseband information signal. In an alternate embodiment, the VLIF information signal is down converted to baseband prior to removal of the DC offset component, which then resides at −VLIF frequency.

摘要翻译： 无线接收机包括本机振荡器，混频器，带通滤波器，DC偏移确定模块，DC偏移校正模块，减法模块和下变频器。 本地振荡器产生本地振荡，混频器用于降低RF信号信号的转换，以在VLIF产生非常低的中频（VLIF）信息信号并具有DC偏移。 带通滤波器带通滤波VLIF信息信号。 DC偏移确定模块产生用于VLIF信息信号的DC偏移指示。 DC偏移校正模块基于DC偏移指示产生DC偏移校正。 减法模块从VLIF信息信号中减去DC偏移校正，以基本上去除后滤波的VLIF信息信号的DC偏移。 下变频器将VLIF信息信号转换为基带信息信号。 在替代实施例中，在去除DC偏移分量之前，VLIF信息信号被下变频为基带，然后DC偏移分量驻留在-VLIF频率处。

公开(公告)号：US07206564B2

公开(公告)日：2007-04-17

申请号：US10862714

申请日：2004-06-07

申请人： Baoguo Yang ,  Nelson R. Sollenberger

发明人： Baoguo Yang ,  Nelson R. Sollenberger

IPC分类号： H04B1/10

CPC分类号： H04B1/1027 ,  H03H17/0286 ,  H03H17/0294

摘要： A method to perform adaptive channel filtering on a Radio Frequency (RF) bursts in a cellular wireless communication system. This method first filters an input signal with a first stage filter having a first bandwidth to produce a first stage output signal. Then the first stage output signal is filtered with a second stage filter having a second bandwidth narrower than that of the first stage filter to produce a multi-stage output signal. A comparison between first stage performance measurements and multi-stage performance measurements determine the mode of operation of the adaptive multistage filter. A first mode of operation, selected when the first stage performance measurement compares favorably with the second stage performance measurement, selects the output of the first stage filter as the output of the multi-stage filter. Otherwise, a second mode of operation selects the output of the second stage filter as the output of the multi-stage filter.

摘要翻译： 一种在蜂窝无线通信系统中对射频（RF）突发执行自适应信道滤波的方法。 该方法首先用具有第一带宽的第一级滤波器对输入信号进行滤波以产生第一级输出信号。 然后第一级输出信号用具有比第一级滤波器窄的第二带宽的第二级滤波器滤波，以产生多级输出信号。 第一阶段性能测量和多级性能测量之间的比较确定了自适应多级滤波器的工作模式。 当第一级性能测量与第二级性能测量相比较时选择的第一操作模式选择第一级滤波器的输出作为多级滤波器的输出。 否则，第二操作模式选择第二级滤波器的输出作为多级滤波器的输出。

公开(公告)号：US07203461B2

公开(公告)日：2007-04-10

申请号：US10845955

申请日：2004-05-14

申请人： Li Fung Chang ,  Yongqian Wang ,  Xiaoxin Qiu ,  Nelson R. Sollenberger

发明人： Li Fung Chang ,  Yongqian Wang ,  Xiaoxin Qiu ,  Nelson R. Sollenberger

IPC分类号： H04B17/00

CPC分类号： H04L1/0021 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0059 ,  H04L1/0072 ,  H04L1/0075 ,  H04L1/203 ,  H04L1/206 ,  H04L25/067

摘要： RF communications received by a wireless terminal from a servicing base station are used to determine the channel quality such as reported bit error probability (BEP). The RF communications may be in the form of RF bursts that are part of a data frame. An estimated BEP may be determined from the signal to noise ratio (SNR) of the RF bursts and or a sequence of soft decisions extracted from the RF bursts, and their historical performance. The SNR maps to an estimated BEP based upon the modulation format of the RF bursts. The soft decisions decode to produce a data block. When the soft decisions decoded favorably, the re-encoded data block produces a sequence of re-encoded decisions. Comparing the re-encoded decisions to the soft decisions yields a re-encoded bit error (RBER). The reported BEP may be based upon the estimated BEP, RBER, and/or RBER threshold. The RBER threshold may be adaptively incremented or decremented depending upon whether or not the RF communications were properly decoded. The size of the increment or decrement may be based on the channel quality.

公开(公告)号：US07133380B1

公开(公告)日：2006-11-07

申请号：US09781445

申请日：2001-02-13

申请人： Jack H. Winters ,  Justin C. Chuang ,  Nelson R. Sollenberger

发明人： Jack H. Winters ,  Justin C. Chuang ,  Nelson R. Sollenberger

IPC分类号： H04J1/00 ,  H04B7/212 ,  H04Q7/20

CPC分类号： H04W72/08 ,  H04B7/0632 ,  H04B7/08 ,  H04B7/0805 ,  H04B7/084 ,  H04B7/0857

摘要： A method for establishing wireless communication between a transmitter and a receiver in a wireless communication system. The receiver includes an adaptive array that has at least two antennas. Each antenna receives a signal and produces a received signal. The transmitter includes at least two transmission channels for communicating the signal from the transmitter to the receiver. The wireless communication system suppresses interference at the receiver by applying an interference suppression technique when combining the received signals. The selection of a channel at the transmitter is based on the channel performance at the receiver for each transmission channel. The channel performance is based on a combining technique different from the interference suppression technique.

摘要翻译： 一种用于在无线通信系统中在发射机和接收机之间建立无线通信的方法。 接收机包括具有至少两个天线的自适应阵列。 每个天线接收一个信号并产生接收到的信号。 发射机包括用于将来自发射机的信号传送到接收机的至少两个传输信道。 无线通信系统通过在组合接收信号时应用干扰抑制技术来抑制接收机的干扰。 在发射机处的信道的选择是基于每个传输信道在接收机处的信道性能。 信道性能是基于与干扰抑制技术不同的组合技术。

公开(公告)号：US5475677A

公开(公告)日：1995-12-12

申请号：US366944

申请日：1994-12-29

申请人： Hamilton W. Arnold ,  Li F. Chang ,  Anthony R. Noerpel ,  Nelson R. Sollenberger ,  Robert A. Ziegler

发明人： Hamilton W. Arnold ,  Li F. Chang ,  Anthony R. Noerpel ,  Nelson R. Sollenberger ,  Robert A. Ziegler

IPC分类号： H04B1/40 ,  H04B7/06 ,  H04B7/08 ,  H04B7/26 ,  H04J3/00 ,  H04J4/00 ,  H04M1/00 ,  H04W4/18 ,  H04W88/02 ,  H04W88/06 ,  H04B1/56 ,  H04L5/14

CPC分类号： H04W88/06 ,  H04B1/005 ,  H04B1/406 ,  H04B7/0608 ,  H04B7/0805 ,  H04B7/2615 ,  H04J4/00 ,  H04B1/405 ,  H04W4/18 ,  H04W88/02

摘要： In a TDM/TDMA portable radio communications system, a portable handset is compatible for operation in both a frequency-division duplexing (FDD) mode for communication in the licensed portion of the Emerging Technologies frequency band, and in a time-division duplexing (TDD) mode for communication in the unlicensed portion of the Emerging Technologies frequency band. In the FDD mode, different frequencies are used to separate a downlink transmission to a portable from a port from an uplink transmission from a port to a portable. In the TDD mode, uplink and downlink transmissions are separated in different time-slots, but at the same frequency. The handset includes common transmit and receive circuitry that operates at fixed IF frequencies that are separated in frequency by the fixed FDD frequency difference between corresponding uplink and downlink signals. In the FDD mode, therefore, a frequency synthesizer (301), which is used to tune to transmit and receive at different frequencies from different ports, does not have to switch its frequency between transmitting and receiving a burst to and from a single port. In the TDD mode, however, even though uplink and downlink signals are at the same frequency, the synthesizer is switched in frequency between transmitting uplink and receiving downlink.

摘要翻译： 在TDM / TDMA便携式无线电通信系统中，便携式手机兼容于用于在新兴技术频带的许可部分中进行通信的频分双工（FDD）模式以及时分双工（TDD） ）模式，用于在Emerging Technologies频段的未许可部分进行通信。 在FDD模式中，使用不同的频率将从端口的便携式终端的下行链路传输从从端口到便携式的上行链路传输分离。 在TDD模式中，上行链路和下行链路传输在不同的时隙中分离，但是频率相同。 手机包括以固定的IF频率工作的公共发射和接收电路，频率上分离相应的上行链路和下行链路信号之间的固定FDD频率差。 因此，在FDD模式中，用于调谐以从不同端口发送和接收不同频率的频率合成器（301）不必在从单个端口发送和接收脉冲串之间切换其频率。 然而，在TDD模式中，即使上行链路和下行链路信号处于相同的频率，合成器在发送上行链路和接收下行链路之间的频率也被切换。

公开(公告)号：US5363375A

公开(公告)日：1994-11-08

申请号：US100020

申请日：1993-07-30

申请人： Justin C. Chuang ,  Nelson R. Sollenberger

发明人： Justin C. Chuang ,  Nelson R. Sollenberger

IPC分类号： H04B7/26 ,  H04J3/06 ,  H04B7/212

CPC分类号： H04B7/2696 ,  H04J3/0679 ,  H04B7/269

摘要： In a TDM/TDMA digital radio communications system a few selected ports are connected to a fixed common timing reference and designated as master ports. Each master port is assigned a hierarchical value of zero. Every other port is initialized a high hierarchical value before performing an autonomous iterative procedure to synchronize timing to its nearest master port. By demodulating downlink signals transmitted from other ports when its own transmitter is turned off, a receiving port selects only a fixed number of ports providing the best signal quality with respect to which to adjust its timing. The relative timings and the hierarchical values of the transmitting ports are compared with those of the receiving port. If the hierarchical value of the receiving port, H.sub.R, is greater than or equal to the lowest hierarchical value, H.sub.L, of the transmitting ports, it adjusts its timing based on the timing differences with respect to the set of ports having a hierarchical value of H.sub.L and which have the highest signal quality. Further, H.sub.R is set to H.sub.L +1 if H.sub.R is greater than H.sub.L. The master timing propagates rapidly in a hierarchical way, which results in time synchronization of the entire system without timing drift.

摘要翻译： 在TDM / TDMA数字无线电通信系统中，几个选择的端口连接到固定的公共定时参考并被指定为主端口。 每个主端口都分配了一个零级的值。 在执行自主迭代过程以将定时与其最近的主端口同步之前，每隔一个端口被初始化为高层次值。 通过解调当其自身发射机关闭时从其他端口发射的下行链路信号，接收端口仅选择提供最佳信号质量的固定数量的端口来调整其定时。 将发送端口的相对定时和分层值与接收端口的相对定时和分层值进行比较。 如果接收端口HR的分层值大于或等于发送端口的最低分层值HL，则根据相对于具有层级值的端口组的定时差来调整其定时 HL，具有最高的信号质量。 此外，如果HR大于HL，则将HR设置为HL + 1。 主定时以分层方式快速传播，这导致整个系统的时间同步而没有定时漂移。

公开(公告)号：US08249575B2

公开(公告)日：2012-08-21

申请号：US13015955

申请日：2011-01-28

申请人： Nelson R. Sollenberger ,  Weidong Li

发明人： Nelson R. Sollenberger ,  Weidong Li

IPC分类号： H04M1/00 ,  G06F13/28

CPC分类号： H04M1/253 ,  H04L67/06 ,  H04M1/72522 ,  H04M2250/02 ,  H04M2250/06 ,  H04W28/14

摘要： A voice data and RF integrated circuit (IC) includes an RF transceiver module that produces received data based on a received RF signal and that produces a transmitted RF signal based on transmit data. A memory module includes a first read only memory (ROM) segment for storing a first plurality of operational instructions, and a first random access memory (RAM) segment for storing a second plurality of operational instructions. A first processing module executes the plurality of operational instructions that include baseband processing to generate input data from the received data, and to produce the transmit data from input data. A first memory interface provides direct downloading of the second plurality of operational instructions from the external memory to the first RAM segment.

摘要翻译： 语音数据和RF集成电路（IC）包括RF收发器模块，其基于接收的RF信号产生接收的数据，并且基于发送数据产生发送的RF信号。 存储器模块包括用于存储第一多个操作指令的第一只读存储器（ROM）段和用于存储第二多个操作指令的第一随机存取存储器（RAM）段。 第一处理模块执行包括基带处理的多个操作指令，以从接收到的数据生成输入数据，并从输入数据产生发送数据。 第一存储器接口提供将第二多个操作指令从外部存储器直接下载到第一RAM段。

公开(公告)号：US08068539B2

公开(公告)日：2011-11-29

申请号：US12893026

申请日：2010-09-29

申请人： Arkady Molev-Shteiman ,  Nelson R. Sollenberger ,  Huaiyu (Hanks) Zeng

发明人： Arkady Molev-Shteiman ,  Nelson R. Sollenberger ,  Huaiyu (Hanks) Zeng

IPC分类号： H03H7/30 ,  H04B1/10

CPC分类号： H04L25/03038 ,  H04L25/0224 ,  H04L25/0305 ,  H04L25/03178 ,  H04L2025/03401

摘要： Adaptive interference cancellation algorithm using speech mode dependent thresholds. A method of processing radio frequency (RF) bursts dependent on a speech mode associated with data contained within the RF burst is presented. Different voice modes, full rate, half rate, and adaptive multi-channel rates each may require different signal to noise ratio (SNR) conditions in order to be successfully processed. To improve the equalization, the SNR associated with the burst is estimated. Based on the SNR or other related conditions, a decision can be made as to whether or not an interference cancellation burst process should be implemented. For example, any one or more of SNR of the signal, a measure of colored noise within the signal, an indication whether the signal being noise limited or interference limited, and a channel profile of the signal may indicate the presence of interference requiring the cancellation of such interference.

摘要翻译： 使用语音模式相关阈值的自适应干扰消除算法。 呈现依赖于与包含在RF突发内的数据相关联的语音模式的射频（RF）脉冲串的处理方法。 不同的语音模式，全速率，半速率和自适应多信道速率各自可能需要不同的信噪比（SNR）条件才能被成功处理。 为了改善均衡，估计与突发相关联的SNR。 基于SNR或其他相关条件，可以做出是否应该实施干扰消除突发过程的决定。 例如，信号的SNR中的任何一个或多个，信号内的彩色噪声的测量，噪声限制的信号或干扰受限的指示以及信号的信道分布可以指示存在需要消除的干扰 的这种干扰。