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1. 发明授权

US07190750B2 Rake receiver for tracking closely spaced multipath 有权
标题翻译：用于跟踪紧密间隔的多路径的耙式接收器
公开(公告)号：US07190750B2
公开(公告)日：2007-03-13
申请号：US10086574
申请日：2002-02-28
申请人： Edward Harrison Teague , Messay Amerga , Jeremy Lin , Da-shan Shiu
发明人： Edward Harrison Teague , Messay Amerga , Jeremy Lin , Da-shan Shiu
IPC分类号： H04B7/10
CPC分类号： H04B1/7117
摘要： Techniques for tracking closely spaced multipath and preventing finger merge without monitoring relative positions between each of a plurality of fingers are disclosed. In one aspect, motion limits are determined for each finger. Time-tracking commands that would move the position of a finger outside its respective motion limits are suppressed. In another aspect, motion limits are updated dynamically, the motion limits of each finger determined in accordance with the motion limits of fingers adjacent to it. Various other aspects are also presented. These aspects have the benefit of preventing finger merge, which allows the allocation of multiple fingers to closely spaced multipath, thus increasing performance and system capacity, and mitigating misallocation of system resources.
摘要翻译：公开了用于跟踪紧密间隔的多路径并防止手指合并而不监视多个手指之间的相对位置的技术。在一个方面，为每个手指确定运动限制。可以抑制将手指位置移动超过其各自运动极限的时间跟踪命令。在另一方面，运动限制被动态地更新，每个手指的运动限制根据与其相邻的手指的运动限制确定。还提出了各种其他方面。这些方面具有防止手指合并的优点，这允许将多个指状物分配到紧密间隔的多路径，从而提高性能和系统容量，并减轻系统资源的未分配。

2. 发明申请

US20050079846A1 Telecommunications using a tunable oscillator 有权
标题翻译：电信使用可调振荡器
公开(公告)号：US20050079846A1
公开(公告)日：2005-04-14
申请号：US10684771
申请日：2003-10-14
申请人： Andrew Sendonaris , Da-shan Shiu , Dominic Farmer , Jeremy Lin , Parvathanathan Subrahmanya , Thomas Rowland
发明人： Andrew Sendonaris , Da-shan Shiu , Dominic Farmer , Jeremy Lin , Parvathanathan Subrahmanya , Thomas Rowland
IPC分类号： G01S19/25 , G01S19/23 , H04B1/38 , H04L27/00 , H04B1/06 , H04L7/04
CPC分类号： H04L27/0014 , G01S19/235 , H04B1/3805 , H04L2027/0077
摘要： Systems and techniques are disclosed relating to wireless communications. These systems and techniques involve wireless communications wherein a device may be configured to recover an information signal from a carrier using a reference signal, detect a frequency error in the information signal; and periodically tune the reference signal to reduce the frequency error.
摘要翻译：公开了与无线通信有关的系统和技术。这些系统和技术涉及无线通信，其中设备可以被配置为使用参考信号从载波恢复信息信号，检测信息信号中的频率误差; 并定期调谐参考信号以减少频率误差。

3. 发明申请

US20080233995A1 POWER CONTROL FOR A CHANNEL WITH MULTIPLE FORMATS IN A COMMUNICATION SYSTEM 有权
标题翻译：在通信系统中具有多个格式的通道的功率控制
公开(公告)号：US20080233995A1
公开(公告)日：2008-09-25
申请号：US12111092
申请日：2008-04-28
申请人： Da-shan Shiu , Serge Willenegger , Richard Chi , Parvathanathan Subrahmanya , Chih-Ping Hsu
发明人： Da-shan Shiu , Serge Willenegger , Richard Chi , Parvathanathan Subrahmanya , Chih-Ping Hsu
IPC分类号： H04B7/00
CPC分类号： H04W52/12 , H04W52/20 , H04W52/267 , H04W52/283 , H04W52/286 , H04W52/44
摘要： Techniques to more efficiently control the transmit power for a data transmission that uses a number of formats (e.g., rates, transport formats). Different formats for a given data channel (e.g., transport channel) may require different target SNIRs to achieved a particular BLER. In one aspect, individual target BLER may be specified for each format of each data channel. In another aspect, various power control schemes are provided to achieve different target SNIRs for different formats. In a first power control scheme, multiple individual outer loops are maintained for multiple formats. For each format, its associated outer loop attempts to set the target SNIR such that the target BLER specified for that format is achieved. In a second power control scheme, multiple individual outer loops are maintained and the base station further applies different adjustments to the transmit power levels for different formats.
摘要翻译：用于更有效地控制使用多种格式（例如，速率，传输格式）的数据传输的发射功率的技术。给定数据信道（例如，传输信道）的不同格式可能需要不同的目标SNIR来实现特定的BLER。在一个方面，可以为每个数据信道的每个格式指定单个目标BLER。在另一方面，提供各种功率控制方案以实现用于不同格式的不同目标SNIR。在第一功率控制方案中，为多种格式维护多个单独的外环。对于每个格式，其关联的外部循环尝试设置目标SNIR，使得为该格式指定的目标BLER被实现。在第二功率控制方案中，保持多个单独的外环，并且基站进一步对不同格式的发射功率电平进行不同的调整。

4. 发明授权

US07251467B2 Telecommunications using a tunable oscillator 有权
标题翻译：电信使用可调振荡器
公开(公告)号：US07251467B2
公开(公告)日：2007-07-31
申请号：US10684771
申请日：2003-10-14
申请人： Andrew Sendonaris , Da-shan Shiu , Dominic Gerard Farmer , Jeremy H. Lin , Parvathanathan Subrahmanya , Thomas K. Rowland
发明人： Andrew Sendonaris , Da-shan Shiu , Dominic Gerard Farmer , Jeremy H. Lin , Parvathanathan Subrahmanya , Thomas K. Rowland
IPC分类号： H04B1/06 , H04L7/04
CPC分类号： H04L27/0014 , G01S19/235 , H04B1/3805 , H04L2027/0077
摘要： Systems and techniques are disclosed relating to wireless communications. These systems and techniques involve wireless communications wherein a device may be configured to recover an information signal from a carrier using a reference signal, detect a frequency error in the information signal; and periodically tune the reference signal to reduce the frequency error.
摘要翻译：公开了与无线通信有关的系统和技术。这些系统和技术涉及无线通信，其中设备可以被配置为使用参考信号从载波恢复信息信号，检测信息信号中的频率误差; 并定期调谐参考信号以减少频率误差。

5. 发明授权

US07089030B2 De-boosting in a communications environment 有权
标题翻译：在通信环境中提升效能
公开(公告)号：US07089030B2
公开(公告)日：2006-08-08
申请号：US10644494
申请日：2003-08-19
申请人： Alkinoos Hector Vayanos , Durga Prasad Malladi , Da-shan Shiu
发明人： Alkinoos Hector Vayanos , Durga Prasad Malladi , Da-shan Shiu
IPC分类号： H04B7/00 , H04J1/12
CPC分类号： H04W52/265 , H04L1/0002 , H04L1/0003 , H04L1/0006 , H04L1/0009 , H04L1/0066 , H04L1/007 , H04L1/1664 , H04L1/1819 , H04L1/20 , H04W52/267
摘要： Systems and techniques are disclosed relating to communications. The systems and techniques involve transmitting to a remote location a first signal at a first energy level followed by a second signal at a second energy level, determining a target transmission energy level as a function of a target quality parameter at the remote location, and computing the second energy level as a function of the target transmission energy level and the first energy level. It is emphasized that this abstract is provided solely to assist a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
摘要翻译：公开了与通信相关的系统和技术。所述系统和技术涉及以第一能量级别向远程位置发送第一信号，随后是第二能量级的第二信号，确定作为远程位置处的目标质量参数的函数的目标传输能级，以及计算作为目标传输能级和第一能级的函数的第二能级。要强调的是，该摘要仅仅是为了帮助搜索者或其他读者快速确定技术公开的主题。提交它的理解是，它不会用于解释或限制权利要求的范围或含义。

6. 发明授权

US06885711B2 Turbo decoder with multiple scale selections 有权
标题翻译：具有多尺度选择的Turbo解码器
公开(公告)号：US06885711B2
公开(公告)日：2005-04-26
申请号：US09893046
申请日：2001-06-27
申请人： Da-shan Shiu , Rajesh Sundaresan
发明人： Da-shan Shiu , Rajesh Sundaresan
IPC分类号： H03M13/09 , H03M13/29 , H03M13/39 , H03M13/45 , H04L1/00
CPC分类号： H03M13/3905 , H03M13/2957 , H03M13/2975 , H03M13/3707 , H03M13/3776 , H03M13/3911 , H03M13/6337 , H03M13/6577 , H03M13/658
摘要： Techniques to improve the performance of a Turbo decoder when scale information for the bits in a code segment to be decoded is not known. A number of hypotheses are formed for the code segment, with each hypothesis corresponding to a particular set of one or more values for a set of one or more parameters used for decoding the code segment. For the MAP decoding scheme, these parameters may be for the sequence of scaling factors used to scale the bits prior to decoding and/or a scale used to evaluate a (e.g., min*) function for the MAP decoding. The code segment is decoded based on the MAP decoding scheme and in accordance with each hypothesis. The quality of the decoded result for each hypothesis is determined based on one or more performance metrics. The decoded bits for the best hypothesis are provided as the Turbo decoder output.
摘要翻译：当解码的码段中的位的缩放信息不为人知时，提高Turbo解码器的性能的技术。为代码段形成多个假设，每个假设对应于用于解码代码段的一个或多个参数的集合的一个或多个值的特定集合。对于MAP解码方案，这些参数可以用于在解码之前用于缩放比特的缩放因子序列和/或用于评估用于MAP解码的（例如，min *）功能的比例。根据MAP解码方案并根据每个假设对代码段进行解码。基于一个或多个性能度量来确定每个假设的解码结果的质量。提供最佳假设的解码位作为Turbo解码器输出。

7. 发明授权

US07254170B2 Noise and channel estimation using low spreading factors 有权
标题翻译：噪声和信道估计使用低扩频因子
公开(公告)号：US07254170B2
公开(公告)日：2007-08-07
申请号：US10290749
申请日：2002-11-07
申请人： Da-shan Shiu , Durga P. Malladi , Srikrishna Bhashyam
发明人： Da-shan Shiu , Durga P. Malladi , Srikrishna Bhashyam
IPC分类号： H04B3/46
CPC分类号： H04B1/1027 , H04B1/7097 , H04L1/20 , H04L25/0228
摘要： Noise measurements are made within a fraction of a single symbol period of a longest orthogonal code symbol. A control processor identifies an unoccupied code having a spreading factor that is less than a longest spreading factor for the system. A despreader measures symbol energy based on the unoccupied code and a noise estimator generates noise estimations based on the measured symbol energies. The subscriber station uses similar techniques in order to perform channel estimations within a period that is a fraction of a symbol period of a longest-spreading-factor code.
摘要翻译：在最长正交码符号的单个符号周期的一小部分内进行噪声测量。控制处理器识别具有小于系统的最长扩展因子的扩展因子的未占用代码。解扩器基于未占用的代码来测量符号能量，并且噪声估计器基于测量的符号能量产生噪声估计。订户站使用类似的技术，以便在作为最长扩展因子码的符号周期的一部分的周期内执行信道估计。

8. 发明授权

US06765952B2 Transmit diversity pilot processing 有权
标题翻译：发射分集导频处理
公开(公告)号：US06765952B2
公开(公告)日：2004-07-20
申请号：US10139904
申请日：2002-05-06
申请人： Da-shan Shiu
发明人： Da-shan Shiu
IPC分类号： H04L100
CPC分类号： H04L25/0228 , H04L1/0618 , H04L25/0206
摘要： Techniques for improved diversity pilot estimation in rapidly changing channel environments are disclosed. In one aspect, a difference estimate is updated when a current received symbol comprises a difference between the primary and diversity channels, and a sum estimate is updated when a current received symbol comprises a sum of the primary and diversity channels. The primary channel and the diversity channel are estimated in response to the sum estimate and the difference estimate. In another aspect, the sum estimate and difference estimate are produced by filtering the received symbols. In yet another aspect, received symbols are demodulated in response to the primary and diversity channel estimates. These aspects have the benefit of incorporating the most recently received symbol, resulting in more accurate channel estimates and hence improved demodulation performance, increased system capacity, lower required transmit power, and other benefits.
摘要翻译：公开了在快速变化的信道环境中用于改进分集导频估计的技术。在一个方面，当当前接收的符号包括主信道和分集信道之间的差异时，更新差分估计，并且当当前接收到的符号包括主信道和分集信道之和时更新和估计。主要信道和分集信道是根据总和估计和差分估计来估计的。在另一方面，通过对所接收的符号进行滤波来产生和估计和差值估计。在另一方面，响应于主要和分集信道估计，对接收符号进行解调。这些方面具有并入最近接收到的符号的优点，导致更准确的信道估计，从而提高解调性能，增加的系统容量，更低的所需传输功率和其他益处。

9. 发明授权

US06748234B1 Method and apparatus for power control in a wireless communication system 有权
标题翻译：无线通信系统中功率控制的方法和装置
公开(公告)号：US06748234B1
公开(公告)日：2004-06-08
申请号：US09718316
申请日：2000-11-21
申请人： Avneesh Agrawal , Da-shan Shiu
发明人： Avneesh Agrawal , Da-shan Shiu
IPC分类号： H04B700
CPC分类号： H04W52/343 , H04W52/08 , H04W52/12 , H04W52/20 , H04W52/24 , H04W52/241 , H04W52/346 , H04W52/36 , H04W52/362
摘要： In a wireless communication system having a composite transport channel made up of individual transport channels, a method for closed loop power control wherein multiple instances of the outer loop are performed in parallel. The method determines a Signal-to-Interference Ratio (SIR) threshold for the composite channel based on a channel quality metric evaluated for each of the individual channels. In one embodiment the channel quality metric is a Cyclical Redundancy Check (CRC) outcome.
摘要翻译：在具有由单个传输信道组成的复合传输信道的无线通信系统中，一种用于闭环功率控制的方法，其中并行执行外环的多个实例。该方法基于针对每个单个信道估计的信道质量度量来确定复合信道的信号干扰比（SIR）阈值。在一个实施例中，信道质量度量是循环冗余校验（CRC）结果。

10. 发明授权

US08059584B2 Inter-frequency neighbor list searching 有权
标题翻译：频间邻居列表搜索
公开(公告)号：US08059584B2
公开(公告)日：2011-11-15
申请号：US12029849
申请日：2008-02-12
申请人： Da-shan Shiu , Thomas B Wilborn , Roland Reinhard Rick , Srinivasa Rao Nagaram , Chalapathi Rao Emani , Ramachandran Gurumoorthy , Jesus Chao , Steve Doerfler , Peter Ang , Srividya Kunisetti , Gwang-Hyun Gho , Thomas Nelson Bailey
发明人： Da-shan Shiu , Thomas B Wilborn , Roland Reinhard Rick , Srinivasa Rao Nagaram , Chalapathi Rao Emani , Ramachandran Gurumoorthy , Jesus Chao , Steve Doerfler , Peter Ang , Srividya Kunisetti , Gwang-Hyun Gho , Thomas Nelson Bailey
IPC分类号： H04W4/00
CPC分类号： H04W36/0083 , H04B1/70754 , H04W36/14 , H04W88/06
摘要： Techniques for inter-frequency neighbor list searching are disclosed. Embodiments disclosed herein address the need for inter-frequency neighbor list searching. In one embodiment, a searcher is deployed to search a PN space with a first set of search parameters and to return search results. A subset of those results is selected, along with a previously saved search result, to form a set of PN locations for a second search. The second search is performed on a window around each of the PN locations, using a second set of search parameters. The maximum peak from the second search is saved for use in future iterations. In one embodiment, the subset is selected as the highest energy level peaks from the first search. In one embodiment, if a maximum peak is deemed to correspond to a valid base station when the position of that maximum peak is within a pre-determined time offset from a previous maximum peak.
摘要翻译：公开了频间邻居列表搜索技术。本文公开的实施例解决了对频间邻居列表搜索的需要。在一个实施例中，部署搜索器以利用第一组搜索参数搜索PN空间并返回搜索结果。选择这些结果的子集以及先前保存的搜索结果以形成用于第二搜索的一组PN位置。使用第二组搜索参数，在围绕每个PN位置的窗口上执行第二搜索。第二次搜索的最大峰值被保存以供将来的迭代使用。在一个实施例中，子集被选择为来自第一搜索的最高能级峰值。在一个实施例中，如果当该最大峰值的位置在与先前最大峰值的预定时间偏移之内时，认为最大峰值对应于有效基站。

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