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1. 发明授权

US08781447B2 Techniques to wirelessly transmit data 有权
标题翻译：无线传输数据的技术
公开(公告)号：US08781447B2
公开(公告)日：2014-07-15
申请号：US12889625
申请日：2010-09-24
申请人： Barry A. O'Mahony , Jeffrey R. Foerster , V. Srinivasa Somayazulu , Ozgur Oyman
发明人： Barry A. O'Mahony , Jeffrey R. Foerster , V. Srinivasa Somayazulu , Ozgur Oyman
IPC分类号： H04L1/06 , H04B7/00 , G06F7/00
CPC分类号： H04N21/234327 , H04N21/631 , H04N21/6373
摘要： Techniques are described to transmit multimedia content to a mobile station using a combination of a mobile/cellular network as well as a TV Whitespace (TVWS) network. Scalable video coding can be used to transmit a baseline layer of multi-media content using the mobile/cellular network and one or more enhancement layers over the TVWS channels. Joint source-channel coding can be used to adjust the transmission scheme used by mobile/cellular and/or TVWS based on end user experience.
摘要翻译：描述了使用移动/蜂窝网络以及电视空白（TVWS）网络的组合将多媒体内容传送到移动台的技术。可以使用可分级视频编码来使用移动/蜂窝网络和TVWS信道上的一个或多个增强层来传输多媒体内容的基线层。联合源信道编码可以用于基于最终用户体验来调整移动/蜂窝和/或TVWS使用的传输方案。

2. 发明申请

US20120077466A1 TECHNIQUES TO WIRELESSLY TRANSMIT DATA 有权
标题翻译：技术无线传输数据
公开(公告)号：US20120077466A1
公开(公告)日：2012-03-29
申请号：US12889625
申请日：2010-09-24
申请人： Barry A. O'Mahony , Jeffrey R. Foerster , V. Srinivasa Somayazulu , Ozgur Oyman
发明人： Barry A. O'Mahony , Jeffrey R. Foerster , V. Srinivasa Somayazulu , Ozgur Oyman
IPC分类号： H04M3/42 , H04B1/38 , H04W4/00
CPC分类号： H04N21/234327 , H04N21/631 , H04N21/6373
摘要： Techniques are described to transmit multimedia content to a mobile station using a combination of a mobile/cellular network as well as a TV Whitespace (TVWS) network. Scalable video coding can be used to transmit a baseline layer of multi-media content using the mobile/cellular network and one or more enhancement layers over the TVWS channels. Joint source-channel coding can be used to adjust the transmission scheme used by mobile/cellular and/or TVWS based on end user experience.
摘要翻译：描述了使用移动/蜂窝网络以及电视空白（TVWS）网络的组合将多媒体内容传送到移动台的技术。可以使用可分级视频编码来使用移动/蜂窝网络和TVWS信道上的一个或多个增强层来传输多媒体内容的基线层。联合源信道编码可以用于基于最终用户体验来调整移动/蜂窝和/或TVWS使用的传输方案。

3. 发明授权

US07613223B2 Time-frequency coding in a multi-band ultra-wideband system 失效
标题翻译：多频带超宽带系统中的时频编码
公开(公告)号：US07613223B2
公开(公告)日：2009-11-03
申请号：US10749343
申请日：2003-12-31
申请人： Sumit Roy , Jeffrey R. Foerster , V. Srinivasa Somayazulu
发明人： Sumit Roy , Jeffrey R. Foerster , V. Srinivasa Somayazulu
IPC分类号： H04B1/69 , H04B1/707 , H04B1/713
CPC分类号： H04B1/71632 , H04B1/713
摘要： Time-frequency coding in a multi-band ultra-wideband system is generally described. In this regard a hopping code agent is presented to select a frequency hopping code for encoding and decoding from a set of predetermined FHC's for communicating with other devices in a multi-band ultra-wideband (MB-UWB) network, wherein the FHC defines a sequence of two or more pulses over two or more frequencies and wherein the FHC's include a time slot that contains no transmission. Other embodiments are also disclosed and claimed.
摘要翻译：通常描述多频带超宽带系统中的时频编码。在这方面，呈现跳频代码代理从用于与多频带超宽带（MB-UWB）网络中的其他设备进行通信的一组预定FHC选择用于编码和解码的跳频码，其中FHC定义在两个或多个频率上的两个或更多个脉冲的序列，并且其中FHC包括不包含传输的时隙。还公开并要求保护其他实施例。

4. 发明授权

US06977972B1 Method of hybrid soft/hard decision demodulation of signals with multilevel modulation 失效
标题翻译：多电平调制信号混合软/硬判决解调方法
公开(公告)号：US06977972B1
公开(公告)日：2005-12-20
申请号：US09614784
申请日：2000-07-12
申请人： Srinivas Kandala , V. Srinivasa Somayazulu , Chan K. Park
发明人： Srinivas Kandala , V. Srinivasa Somayazulu , Chan K. Park
IPC分类号： H04L25/06 , H04L27/00 , H04L27/22
CPC分类号： H04L25/067
摘要： The performance of forward error correction decoders for digital communication systems can be improved if soft information relating the reliability of the value representing the demodulated signal is provided to the decoder with a value for the signal. On the other hand, soft information increases the quantity of information that must be processed, increasing the cost and complexity of the decoder.
摘要翻译：如果将与表示解调信号的值的可靠性相关联的软信息以信号的值提供给解码器，则可以提高数字通信系统的前向纠错解码器的性能。另一方面，软信息增加了必须处理的信息量，增加了解码器的成本和复杂性。

5. 发明授权

US06085104A Pilot aided, time-varying finite impulse response, adaptive channel matching receiving system and method 失效
标题翻译：导频辅助，时变有限脉冲响应，自适应信道匹配接收系统和方法
公开(公告)号：US06085104A
公开(公告)日：2000-07-04
申请号：US48240
申请日：1998-03-25
申请人： John M. Kowalski , Srinivas Kandala , V. Srinivasa Somayazulu
发明人： John M. Kowalski , Srinivas Kandala , V. Srinivasa Somayazulu
IPC分类号： H04B1/7115 , H04B1/712 , H04B7/08 , H04B15/00
CPC分类号： H04B1/7115 , H04B7/0845 , H04B7/0891 , H04B1/712
摘要： A wideband receiver, including a time-varying finite impulse response (FIR) filter, has been provided to combine multipath communications of data in response to pilot channel timing information. The time-varying FIR processes the multipath communications through independent signal paths. Each signal path includes a variable delay circuit and a variable gain circuit. The delay of each separate signal path is adjusted and made equal in response to the pilot channel timing information. Likewise, the gain of each signal path is adjusted in response to pilot channel gain information to maximize the signal to noise ratio of the combined signal paths. The separate signal paths are then summed in a combiner circuit. The time-varying FIR permits the data communication to be summed either before, or after demodulation. A method of combining multipath communications using a time-varying FIR is also provided.
摘要翻译：已经提供了包括时变有限脉冲响应（FIR）滤波器的宽带接收机，以响应于导频信道定时信息来组合数据的多路径通信。时变FIR通过独立的信号路径处理多路径通信。每个信号路径包括可变延迟电路和可变增益电路。每个单独的信号路径的延迟被调整并且响应于导频信道定时信息使其相等。类似地，响应于导频信道增益信息调整每个信号路径的增益，以最大化组合信号路径的信噪比。然后将单独的信号路径在组合器电路中相加。时变FIR允许在解调之前或之后将数据通信相加。还提供了使用时变FIR组合多路径通信的方法。

6. 发明申请

US20120057542A1 DOWNLINK RESOURCE ALLOCATION AND MAPPING 失效
标题翻译：下载资源分配和映射
公开(公告)号：US20120057542A1
公开(公告)日：2012-03-08
申请号：US13235290
申请日：2011-09-16
申请人： Qinghua Li , Xintian E. Lin , V. Srinivasa Somayazulu , Minnie Ho
发明人： Qinghua Li , Xintian E. Lin , V. Srinivasa Somayazulu , Minnie Ho
IPC分类号： H04W72/04
CPC分类号： H04L5/0007 , H04L5/0039 , H04L5/0041 , H04L5/0044 , H04L5/006 , H04L5/0064 , H04W72/12
摘要： Embodiments of the present invention provide for downlink resource allocation among a plurality of users. Other embodiments may be described and claimed.
摘要翻译：本发明的实施例提供了多个用户之间的下行链路资源分配。可以描述和要求保护其他实施例。

7. 发明授权

US08041362B2 Downlink resource allocation and mapping 有权
标题翻译：下行资源分配和映射
公开(公告)号：US08041362B2
公开(公告)日：2011-10-18
申请号：US11688188
申请日：2007-03-19
申请人： Qinghua Li , Xintian E. Lin , V. Srinivasa Somayazulu , Minnie Ho
发明人： Qinghua Li , Xintian E. Lin , V. Srinivasa Somayazulu , Minnie Ho
IPC分类号： H04Q7/20
CPC分类号： H04L5/0007 , H04L5/0039 , H04L5/0041 , H04L5/0044 , H04L5/006 , H04L5/0064 , H04W72/12
摘要： Embodiments of the present invention provide for downlink resource allocation among a plurality of users. Other embodiments may be described and claimed.
摘要翻译：本发明的实施例提供了多个用户之间的下行链路资源分配。可以描述和要求保护其他实施例。

8. 发明授权

US06208632B1 System and method for CDMA channel estimation 失效
标题翻译： CDMA信道估计的系统和方法
公开(公告)号：US06208632B1
公开(公告)日：2001-03-27
申请号：US09015424
申请日：1998-01-29
申请人： John M. Kowalski , Srinivas Kandala , V. Srinivasa Somayazulu
发明人： John M. Kowalski , Srinivas Kandala , V. Srinivasa Somayazulu
IPC分类号： H04B7216
CPC分类号： H04W52/42 , H04B1/707 , H04B1/7077 , H04B1/7117 , H04B7/0851 , H04B7/2631 , H04B2201/70701 , H04B2201/70702 , H04J3/0602
摘要： A wideband CDMA receiver system to accept messages from asynchronously transmitting base stations is provided. The base station transmission to each receiver includes a perch channel and at least one traffic channel. Although all the channels typically include pilot symbols for the purpose of demodulating the information symbols of the channel, the pilot channel includes a higher proportion of pilot symbols to information symbols. Therefore, a perch channel based timing and estimation system is inherently more accurate. In addition, the perch channel is generally transmitted at higher power levels than a traffic channel, and the resulting, higher, signal to noise ratio signal also improves the accuracy of the timing and channel estimation. Based on the timing derived from the perch channel of a first base station, the receiver can set the timing of the traffic channel transmissions from a second base station, to more closely match the timing of traffic channel transmissions from the first base station. In this manner, the signal to noise ratio of the demodulated traffic channel information symbols is enhanced through the diversity of using the transmissions of two base stations. A method for receiving wideband CDMA transmissions from asynchronously transmitting base stations is also provided.
摘要翻译：提供了一种用于接受来自异步发送基站的消息的宽带CDMA接收机系统。到每个接收机的基站传输包括导频信道和至少一个业务信道。虽然所有信道通常包括用于解调信道的信息符号的导频符号，但是导频信道包括较高比例的导频符号到信息符号。因此，基于导频信道的定时和估计系统本质上更准确。此外，导频信道通常以比业务信道更高的功率电平发送，并且所得到的更高的信噪比信号也提高了定时和信道估计的精度。基于从第一基站的导频信道导出的定时，接收机可以设置来自第二基站的业务信道传输的定时，以更紧密地匹配来自第一基站的业务信道传输的定时。以这种方式，通过使用两个基站的传输的分集来增强解调业务信道信息符号的信噪比。还提供了用于从异步发送基站接收宽带CDMA传输的方法。

9. 发明授权

US06665357B1 Soft-output turbo code decoder and optimized decoding method 失效
标题翻译：软输出turbo码解码器和优化解码方法
公开(公告)号：US06665357B1
公开(公告)日：2003-12-16
申请号：US09363303
申请日：1999-07-28
申请人： V. Srinivasa Somayazulu
发明人： V. Srinivasa Somayazulu
IPC分类号： H03D100
CPC分类号： H03M13/2975 , H03M13/4146
摘要： Turbo codes used in digital communication systems are decoded by successive iterations of a maximum likelihood algorithm. The turbo code decoder is a modular apparatus with each module comprising two or more serial constituent decoders. The output a constituent decoder or a module is part of the input to the next constituent decoder or module, respectively. The progress of the decoding can be monitored by establishing a limit for the output of the constituent decoders and monitoring the numbers of outputs of one or more constituent decoders that approximately equaling that limit. When the numbers of outputs approaching the limit or saturating is unchanged for successive iterations or successive serial decoders no further progress is being made in decoding the message. The performance of the turbo code decoder can be optimized by terminating iterations of the decoding process when the numbers of constituent decoder outputs that have saturated is unchanged for successive iterations or decoder operations.
摘要翻译：在数字通信系统中使用的Turbo码由最大似然算法的连续迭代解码。 turbo码解码器是一种模块化装置，每个模块包括两个或多个串联构成解码器。组成解码器或模块的输出分别是下一个组成解码器或模块的输入的一部分。可以通过建立对组成解码器的输出的限制并监视大致等于该限制的一个或多个组成解码器的输出数来监视解码的进展。当连续迭代或连续的串行解码器接近极限或饱和的输出数量不变时，在消息解码过程中没有进一步的进展。当连续的迭代或解码器操作对已经饱和的组成解码器输出的数量没有改变时，可以通过终止译码过程的迭代来优化turbo码解码器的性能。

10. 发明授权

US06289061B1 Wideband frequency tracking system and method 有权
标题翻译：宽带频率跟踪系统及方法
公开(公告)号：US06289061B1
公开(公告)日：2001-09-11
申请号：US09160551
申请日：1998-09-24
申请人： Srinivas Kandala , V. Srinivasa Somayazulu , John M. Kowalski , Hirohiko Yamamoto
发明人： Srinivas Kandala , V. Srinivasa Somayazulu , John M. Kowalski , Hirohiko Yamamoto
IPC分类号： H04L2706
CPC分类号： H04B1/7115 , H04B1/7117
摘要： A wideband receiver automatic frequency control (AFC) system which combines multipath or diverse antenna signals, before the carrier frequency error is determined, is provided herein. Rather than independently calculating the frequency error of each transmission path, frequency error is calculated after the multipath signals are summed together. Thus, only a single frequency detector circuit is required. The resulting automatic frequency control system has the accuracy of a system which combines the independently calculated frequency errors, with fewer steps of computation required. A method for combining multipath signals to calculate an average AFC frequency error is also provided.
摘要翻译：本文提供了在确定载波频率误差之前组合多路径或多种天线信号的宽带接收机自动频率控制（AFC）系统。不是独立地计算每个传输路径的频率误差，而是在将多路径信号相加在一起之后计算频率误差。因此，仅需要单个频率检测器电路。所得到的自动频率控制系统具有组合独立计算的频率误差的系统的精度，需要较少的计算步骤。还提供了组合多径信号以计算平均AFC频率误差的方法。

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