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1. 发明授权

US09071493B2 Dual frequency tracking loop for OFDMA systems 有权
标题翻译：用于OFDMA系统的双频跟踪环路
公开(公告)号：US09071493B2
公开(公告)日：2015-06-30
申请号：US12824958
申请日：2010-06-28
申请人： Brian C. Banister , Shivratna G. Srinivasan , Matthias Brehler , Sunil Kumar Kandukuri Narayana , Raghu N. Challa
发明人： Brian C. Banister , Shivratna G. Srinivasan , Matthias Brehler , Sunil Kumar Kandukuri Narayana , Raghu N. Challa
IPC分类号： H03D3/24 , H04L27/26 , H03J1/00 , H04L27/00
CPC分类号： H04L27/2657 , H03J1/005 , H04L2027/0055 , H04L2027/0065 , H04L2027/0067
摘要： Methods and apparatus for correcting frequency errors between a carrier frequency of a signal received by a wireless device and a reference frequency local to the device. For certain aspects, such a method generally includes receiving a signal in a receiver having an LO producing a reference frequency, a radio frequency (RF) phase-locked loop (PLL), and a digital rotator, estimating a frequency difference between a carrier frequency of the received signal and the LO reference frequency, and applying the estimated frequency difference to the RF PLL and the digital rotator.
摘要翻译：用于校正由无线设备接收的信号的载波频率与设备本地的参考频率之间的频率误差的方法和装置。对于某些方面，这种方法通常包括在具有产生参考频率的LO的接收机中接收信号，射频（RF）锁相环（PLL）和数字旋转器，估计载波频率的接收信号和LO参考频率，并将估计的频差应用于RF PLL和数字旋转器。

2. 发明授权

US08923424B2 Multi-term demapping for multi-channel wireless communication 有权
标题翻译：用于多通道无线通信的多项解映射
公开(公告)号：US08923424B2
公开(公告)日：2014-12-30
申请号：US12711128
申请日：2010-02-23
申请人： Michael L. McCloud , Matthias Brehler , Ju Won Park , Jong Hyeon Park , Je Woo Kim , Inyup Kang , Brian C. Banister
发明人： Michael L. McCloud , Matthias Brehler , Ju Won Park , Jong Hyeon Park , Je Woo Kim , Inyup Kang , Brian C. Banister
IPC分类号： H04B7/02 , H04L25/03 , H04B7/04
CPC分类号： H04L25/03229 , H04B7/0413 , H04L25/03242 , H04L25/03318 , H04L2025/0342 , H04L2025/03426
摘要： Providing for reduced complexity or improved accuracy in de-mapping received wireless data streams for multi-channel wireless communication is described herein. By way of example, a low-complexity likelihood algorithm can be employed to de-map data bits from the wireless data streams. In one particular example, the likelihood algorithm can approximate a received bit with a subset of received wireless symbols correlated the bit, reducing algorithm complexity. In other examples, a limited set of received wireless symbols can be employed for the subset, further reducing algorithm complexity. According to at least one other example, logarithmic terms of the algorithm can be approximated with non-logarithmic functions, such as a look-up table, series expansion, polynomial approximation, or the like. These approximations can enhance symbol de-mapping accuracy while maintaining or improving processing overhead for a wireless receiver.
摘要翻译：本文描述了为了解复用用于多信道无线通信的接收的无线数据流而提供降低的复杂度或提高的精度。作为示例，可以采用低复杂度似然算法来从无线数据流解映射数据比特。在一个特定示例中，似然算法可以用接收到的无线符号的子集近似接收到的比特，从而降低算法的复杂度。在其他示例中，可以对该子集采用有限的一组接收到的无线符号，进一步降低了算法的复杂度。根据至少另一个示例，算法的对数项可以用非对数函数来近似，例如查找表，串联展开，多项式近似等。这些近似可以增强符号解映射精度，同时保持或改善无线接收机的处理开销。

3. 发明申请

US20110206151A1 MULTI-TERM DEMAPPING FOR MULTI-CHANNEL WIRELESS COMMUNICATION 有权
标题翻译：多通道无线通信多用途解决方案
公开(公告)号：US20110206151A1
公开(公告)日：2011-08-25
申请号：US12711128
申请日：2010-02-23
申请人： Michael L. McCloud , Matthias Brehler , Ju Won Park , Jong Hyeon Park , Je Woo Kim , Inyup Kang , Brian C. Banister
发明人： Michael L. McCloud , Matthias Brehler , Ju Won Park , Jong Hyeon Park , Je Woo Kim , Inyup Kang , Brian C. Banister
IPC分类号： H04L1/02 , H04L27/06
CPC分类号： H04L25/03229 , H04B7/0413 , H04L25/03242 , H04L25/03318 , H04L2025/0342 , H04L2025/03426
摘要： Providing for reduced complexity or improved accuracy in de-mapping received wireless data streams for multi-channel wireless communication is described herein. By way of example, a low-complexity likelihood algorithm can be employed to de-map data bits from the wireless data streams. In one particular example, the likelihood algorithm can approximate a received bit with a subset of received wireless symbols correlated the bit, reducing algorithm complexity. In other examples, a limited set of received wireless symbols can be employed for the subset, further reducing algorithm complexity. According to at least one other example, logarithmic terms of the algorithm can be approximated with non-logarithmic functions, such as a look-up table, series expansion, polynomial approximation, or the like. These approximations can enhance symbol de-mapping accuracy while maintaining or improving processing overhead for a wireless receiver.
摘要翻译：本文描述了为了解复用用于多信道无线通信的接收的无线数据流而提供降低的复杂度或提高的精度。作为示例，可以采用低复杂度似然算法来从无线数据流解映射数据比特。在一个特定示例中，似然算法可以用接收到的无线符号的子集近似接收到的比特，从而降低算法的复杂度。在其他示例中，可以对该子集采用有限的一组接收到的无线符号，进一步降低了算法的复杂度。根据至少另一个示例，算法的对数项可以用非对数函数来近似，例如查找表，串联展开，多项式近似等。这些近似可以增强符号解映射精度，同时保持或改善无线接收机的处理开销。

4. 发明申请

US20110158367A1 DUAL FREQUENCY TRACKING LOOP FOR OFDMA SYSTEMS 有权
标题翻译：用于OFDMA系统的双频跟踪环路
公开(公告)号：US20110158367A1
公开(公告)日：2011-06-30
申请号：US12824958
申请日：2010-06-28
申请人： Brian C. Banister , Shivratna G. Srinivasan , Matthias Brehler , Sunil Kumar Kandukuri Narayana , Raghu N. Challa
发明人： Brian C. Banister , Shivratna G. Srinivasan , Matthias Brehler , Sunil Kumar Kandukuri Narayana , Raghu N. Challa
IPC分类号： H03D3/24
CPC分类号： H04L27/2657 , H03J1/005 , H04L2027/0055 , H04L2027/0065 , H04L2027/0067
摘要： Methods and apparatus for correcting frequency errors between a carrier frequency of a signal received by a wireless device and a reference frequency local to the device. For certain aspects, such a method generally includes receiving a signal in a receiver having an LO producing a reference frequency, a radio frequency (RF) phase-locked loop (PLL), and a digital rotator, estimating a frequency difference between a carrier frequency of the received signal and the LO reference frequency, and applying the estimated frequency difference to the RF PLL and the digital rotator.
摘要翻译：用于校正由无线设备接收的信号的载波频率与设备本地的参考频率之间的频率误差的方法和装置。对于某些方面，这种方法通常包括在具有产生参考频率的LO的接收机中接收信号，射频（RF）锁相环（PLL）和数字旋转器，估计载波频率的接收信号和LO参考频率，并将估计的频差应用于RF PLL和数字旋转器。

5. 发明申请

US20110066913A1 APPARATUS AND METHOD FOR HIGH THROUGHPUT UNIFIED TURBO DECODING 失效
标题翻译：用于高通量统一涡轮解码的装置和方法
公开(公告)号：US20110066913A1
公开(公告)日：2011-03-17
申请号：US12558325
申请日：2009-09-11
申请人： Insung Kang , Ju Won Park , Brian C. Banister
发明人： Insung Kang , Ju Won Park , Brian C. Banister
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H03M13/6544 , H03M13/2957 , H03M13/2969 , H03M13/2996 , H03M13/3723 , H03M13/3938 , H03M13/3972 , H03M13/6525
摘要： An apparatus and method for high throughput unified turbo decoding comprising loading data from a first data window; computing a first forward state metric using the data from the first data window; storing the first forward state metric in a memory; computing a first reverse state metric using the data from the first data window; storing the first reverse state metric in the memory; and computing the log likelihood ratio (LLR) of the first forward state metric and the first reverse state metric. In one aspect, the above-mentioned steps are repeated with data from a second data window. In another aspect, extrinsic information for the first data window associated with the unified turbo decoding is computed.
摘要翻译：一种用于高吞吐量统一turbo解码的装置和方法，包括从第一数据窗加载数据; 使用来自第一数据窗口的数据计算第一前进状态度量; 将第一前进状态度量存储在存储器中; 使用来自第一数据窗口的数据计算第一反向状态度量; 将所述第一反向状态度量存储在所述存储器中; 以及计算第一正向状态度量和第一反向状态度量的对数似然比（LLR）。在一个方面，用来自第二数据窗口的数据重复上述步骤。在另一方面，计算与统一turbo解码相关联的第一数据窗口的外在信息。

6. 发明申请

US20100330992A1 Device, Method, and Apparatus for Offline Discontinuous Reception (DRX) Processing With Online Triggers in Cellular Systems 有权
标题翻译：用于离线不连续接收（DRX）处理的装置，方法和装置，其在蜂窝系统中具有在线触发
公开(公告)号：US20100330992A1
公开(公告)日：2010-12-30
申请号：US12494157
申请日：2009-06-29
申请人： Supratik Bhattacharjee , Brian C. Banister , Shivratna G. Srinivasan
发明人： Supratik Bhattacharjee , Brian C. Banister , Shivratna G. Srinivasan
IPC分类号： H04W36/06 , H04W68/00
CPC分类号： H04W52/028 , H04W68/00 , H04W76/28 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/22 , Y02D70/24
摘要： An apparatus and method for processing signals are disclosed. The apparatus may include a transceiver configured to receive a first paging signal during a first cycle, a memory, and a processor configured to store the received first paging signal in the memory, to switch the transceiver to an off state after the first paging signal is stored in the memory, to process the stored first paging signal while the transceiver is in the off state, and to determine whether to enter an online mode based on the processing.
摘要翻译：公开了一种用于处理信号的装置和方法。该设备可以包括收发器，其被配置为在第一周期期间接收第一寻呼信号，存储器和被配置为将接收到的第一寻呼信号存储在存储器中的处理器，以在第一寻呼信号为存储在存储器中，以在收发器处于关闭状态时处理存储的第一寻呼信号，并且基于该处理来确定是否进入在线模式。

7. 发明授权

US07236538B1 Method and apparatus for improving transmit antenna weight tracking using channel correlations in a wireless communication system 有权
标题翻译：一种用于在无线通信系统中使用信道相关性改进发射天线权重跟踪的方法和装置
公开(公告)号：US07236538B1
公开(公告)日：2007-06-26
申请号：US10080728
申请日：2002-02-22
申请人： Brian C. Banister
发明人： Brian C. Banister
IPC分类号： H04B7/02
CPC分类号： H04B7/0848 , H04B7/0615 , H04B7/0634 , H04B7/0641 , H04B7/0851 , H04B7/0854
摘要： A novel method and apparatus for improving transmit antenna weight tracking using channel vector element to element correlations in a wireless communication system is disclosed. The present channel autocorrelation tracking technique utilizes the observation that tracking can be improved when a channel gain vector contains correlated elements. In a first embodiment of the autocorrelation tracking technique, the present invention extracts a coarse gradient estimate by utilizing a perturbation vector autocorrelation matrix estimate and a perturbation autocorrelation matrix to update TxAA weight vectors accordingly. In a second embodiment of the channel autocorrelation tracking technique, the present invention extracts a coarse gradient estimate by utilizing eigendecompositions, perturbation vector autocorrelation matrix estimates, and perturbation autocorrelation matrices to update TxAA weight vectors accordingly. In a third embodiment of the channel autocorrelation tracking technique, the present invention reduces the phase change that can occur at receivers.
摘要翻译：公开了一种用于在无线通信系统中使用信道向量元素相关性来改进发射天线权重跟踪的新颖方法和装置。当前的信道自相关跟踪技术利用观测，当信道增益矢量包含相关元素时，可以改善跟踪。在自相关跟踪技术的第一实施例中，本发明通过利用扰动向量自相关矩阵估计和扰动自相关矩阵来相应地更新TxAA权重向量来提取粗略梯度估计。在信道自相关跟踪技术的第二实施例中，本发明通过利用特征分解，扰动向量自相关矩阵估计和扰动自相关矩阵来相应地更新TxAA权重向量来提取粗略梯度估计。在信道自相关跟踪技术的第三实施例中，本发明减少了在接收机处可能发生的相位变化。

8. 发明授权

US06775261B1 Frequency division multiple access system searching 有权
标题翻译：频分多址系统搜索
公开(公告)号：US06775261B1
公开(公告)日：2004-08-10
申请号：US09586840
申请日：2000-06-05
申请人： Brian C. Banister
发明人： Brian C. Banister
IPC分类号： H04B7208
CPC分类号： H04B7/208
摘要： Channels are acquired and/or searched in a frequency division multiple access (FDMA) wireless system. Initially, a signal that includes a block of FDMA channels is received and filtered so as to select a frequency band that includes the block of FDMA channels. The filtered signal is then processed to obtain measures of certain frequency components in the filtered signal, and a power estimate for at least one of the FDMA channels is calculated based on at least one of frequency component measures.
摘要翻译：在频分多址（FDMA）无线系统中获取和/或搜索信道。首先，接收并滤波包括FDMA信道块的信号，以便选择包括FDMA信道块的频带。然后处理经滤波的信号以获得经滤波的信号中的某些频率分量的测量，并且基于频率分量测量中的至少一个来计算至少一个FDMA信道的功率估计。

9. 发明授权

US06636552B1 Sequence hopping for combinations of pseudo-random noise sequences 有权
标题翻译：序列跳频用于伪随机噪声序列的组合
公开(公告)号：US06636552B1
公开(公告)日：2003-10-21
申请号：US09440770
申请日：1999-11-16
申请人： Brian C. Banister
发明人： Brian C. Banister
IPC分类号： H04B169
CPC分类号： H04B1/707
摘要： Provided is a method and an apparatus for pseudo-random noise (PN) code sequence hopping, in which an output PN code sequence is generated by generating and combining several intermediate PN code sequences, each of the intermediate PN code sequences being generated by a corresponding PN code sequence generator. A base state is stored for each of the plural intermediate PN code sequences, and the number of states to advance the output PN code sequence is identified, the number being greater than one. A transformation function is obtained for each of the plural intermediate PN code sequences, based on the number of states to advance the output PN code sequence, and then the base state for each intermediate PN code sequence is advanced by the number of states to advance the output PN code sequence, by utilizing the transformation function for such intermediate PN code sequence, to obtain a new state for such intermediate PN code sequence. The new state for each intermediate PN code sequence is then loaded into the corresponding PN code sequence generator, and the PN code sequence generators are enabled with the new states.
摘要翻译：提供了一种用于伪随机噪声（PN）码序列跳频的方法和装置，其中通过生成和组合几个中间PN码序列来产生输出PN码序列，每个中间PN码序列由相应的 PN码序列发生器。为多个中间PN码序列中的每一个存储基态，并且识别出提前输出PN码序列的状态数，该数大于1。基于用于推进输出PN码序列的状态数获得针对多个中间PN码序列中的每一个的变换函数，然后将每个中间PN码序列的基本状态提前数个状态，以推进输出PN码序列，通过利用这种中间PN码序列的变换函数，获得这种中间PN码序列的新状态。然后将每个中间PN码序列的新状态加载到相应的PN码序列生成器中，并且使PN码序列生成器能够使用新的状态。

10. 发明授权

US5987056A PN sequence hopping method and system 失效
标题翻译： PN序列跳频方法和系统
公开(公告)号：US5987056A
公开(公告)日：1999-11-16
申请号：US969219
申请日：1997-11-13
申请人： Brian C. Banister
发明人： Brian C. Banister
IPC分类号： H04B1/66
CPC分类号： H04B1/707
摘要： A novel method for PN sequence hopping where a PN sequence generator has been disabled for a predetermined time before a future time slot where the PN sequence generator will be enabled. The method comprises the steps of writing a base state into storage for a first hop only, calculating from the base state a new state advancing a PN sequence to the beginning of the future time slot, loading the new state into the PN sequence generator, and enabling the PN sequence generator. For subsequent hops, the base state is the new state calculated in the previous hop. In a preferred version, the step of calculating a new state comprises multiplying the base state by a Galois Field polynomial; a serial Galois Field multiplier can be used to perform this multiplication. A system embodying the present invention comprises a PN sequence generator, a control processor, and a storage device. At a desired time after storing the base state, the PN sequence generator is disabled for a predetermined time before a future time slot where the PN sequence generator will be enabled. The control processor calculates a new state advancing a PN sequence to the beginning of the future time slot, and loads the new state into the PN sequence generator, which is subsequently enabled. The PN sequence generator writes the new state into the storage device for a first hop only; for subsequent hops, the base state is the new state calculated in the previous hop.
摘要翻译：一种用于PN序列跳频的新颖方法，其中PN序列发生器在PN序列发生器将被使能的未来时隙之前已被禁用预定时间。该方法包括以下步骤：将基本状态写入仅用于第一跳的存储，从基本状态计算将PN序列推进到未来时隙的开始的新状态，将新状态加载到PN序列生成器中;以及启用PN序列生成器。对于后续跳，基本状态是在上一跳中计算的新状态。在优选版本中，计算新状态的步骤包括将基本状态乘以伽罗瓦域多项式; 可以使用串联伽罗瓦域乘法器来执行该乘法。体现本发明的系统包括PN序列发生器，控制处理器和存储装置。在存储基准状态之后的期望时间，在PN序列发生器将被使能的未来时隙之前禁止PN序列发生器预定的时间。控制处理器计算将PN序列推进到未来时隙的开始的新状态，并将新状态加载到随后使能的PN序列生成器中。 PN序列生成器将新状态写入存储设备仅用于第一跳; 对于后续的跳，基本状态是在上一跳中计算的新状态。

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