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91. 发明授权

US07813453B2 Data detection for a hierarchical coded data transmission 有权
标题翻译：分层编码数据传输的数据检测
公开(公告)号：US07813453B2
公开(公告)日：2010-10-12
申请号：US10821585
申请日：2004-04-09
申请人： Aamod Khandekar , Raghuraman Krishnamoorthi
发明人： Aamod Khandekar , Raghuraman Krishnamoorthi
IPC分类号： H04L27/06
CPC分类号： H04L27/3488 , H04L25/03305 , H04L25/03318
摘要： Techniques for performing data detection for a hierarchical coded data transmission are described. In one data detection scheme, log-likelihood ratios (LLRs) for code bits of a first data stream are initially derived based on received symbols for the data transmission. The LLRs for the first data stream are decoded to obtain decoded data, which is re-encoded and remodulated to obtain remodulated symbols. Interference due to the first data stream is estimated based on the remodulated symbols. LLRs for code bits of a second data stream are derived based on the LLRs for the code bits of the first data stream and the estimated interference. The LLRs for the first data stream may be derived from the received symbols in real-time without buffering the received symbols. The LLRs for the second data stream may be derived after the first data stream has been decoded.
摘要翻译：描述用于执行分层编码数据传输的数据检测的技术。在一个数据检测方案中，基于用于数据传输的接收符号，最初导出用于第一数据流的码位的对数似然比（LLR）。对第一数据流的LLR进行解码以获得被重新编码并重新调制以获得重新调制符号的解码数据。基于重新编码的符号来估计由于第一数据流引起的干扰。基于用于第一数据流的码位的LLR和所估计的干扰，导出用于第二数据流的码位的LLR。可以实时地从接收到的符号导出用于第一数据流的LLR，而不缓冲接收到的符号。可以在第一数据流被解码之后导出用于第二数据流的LLR。

92. 发明申请

US20100165851A1 RF CHANNEL SWITCHING IN BROADCAST OFDM SYSTEMS 有权
标题翻译：广播OFDM系统中的RF信道切换
公开(公告)号：US20100165851A1
公开(公告)日：2010-07-01
申请号：US12722308
申请日：2010-03-11
申请人： Linbo Li , Ashok Mantravadi , Fuyun Ling , Raghuraman Krishnamoorthi
发明人： Linbo Li , Ashok Mantravadi , Fuyun Ling , Raghuraman Krishnamoorthi
IPC分类号： H04W4/00 , H04B17/00 , H04L12/26
CPC分类号： H04W48/16
摘要： Systems and methodologies are described that facilitate monitoring RF channels in a wireless communication environment to determine whether one or more channels comprise a forward-link-only (FLO) signal. A receiver can receive a first RF channel with a FLO signal and can monitor other RF channels for FLO signals. Upon a determination that a monitored RF channel comprises a FLO signal, the receiver can switch between the first RF channel and the monitored RF channel to facilitate providing seamless reception of the FLO signal, which can be superframe synchronized between RF channels. FLO signal detection can be performed using one or more of a wide-area identification channel energy detection protocol and a wide-area overhead information symbol decoding error detection protocol.
摘要翻译：描述了便于在无线通信环境中监视RF信道以确定一个或多个信道是包括仅前向链路（FLO）信号的系统和方法。接收机可以接收具有FLO信号的第一RF信道，并且可以监视FLO信号的其他RF信道。在确定被监视的RF信道包括FLO信号之后，接收机可以在第一RF信道和所监视的RF信道之间切换，以便于提供FLO信号的无缝接收，FLO信号可以在RF信道之间超帧同步。可以使用广域识别信道能量检测协议和广域开销信息符号解码错误检测协议中的一个或多个来执行FLO信号检测。

93. 发明申请

US20100158168A1 METHOD AND SYSTEM FOR AUTOMATIC GAIN CONTROL DURING SIGNAL ACQUISITION 有权
标题翻译：信号采集期间自动增益控制的方法与系统
公开(公告)号：US20100158168A1
公开(公告)日：2010-06-24
申请号：US12720534
申请日：2010-03-09
申请人： Vinay Murthy , Linbo Li , Raghuraman Krishnamoorthi
发明人： Vinay Murthy , Linbo Li , Raghuraman Krishnamoorthi
IPC分类号： H04L27/08
CPC分类号： H03G3/3052
摘要： The disclosure is directed to a mobile communication device that includes automatic gain control (AGC) circuitry and operates in either a tracking mode or an acquisition mode. A received signal is sampled n times to calculate an energy estimate that is used to set the gain control values within the AGC circuitry. The value of n varies depending on whether the handset is operating in the acquisition mode or the tracking mode. Acquisition mode is typically considered to be the mode prior to coarse timing acquisition, also referred to as frame acquisition.
摘要翻译：本公开涉及包括自动增益控制（AGC）电路并且以跟踪模式或采集模式操作的移动通信设备。接收到的信号被采样n次以计算用于设置AGC电路内的增益控制值的能量估计。 n的值根据手机在采集模式或跟踪模式下的运行而变化。采集模式通常被认为是粗略定时采集之前的模式，也称为帧采集。

94. 发明授权

US07734303B2 Pilot modulation error ratio for evaluation of transmitter performance 失效
标题翻译：用于评估发射机性能的导频调制误码率
公开(公告)号：US07734303B2
公开(公告)日：2010-06-08
申请号：US11444204
申请日：2006-05-30
申请人： Raghuraman Krishnamoorthi , Thomas Sun
发明人： Raghuraman Krishnamoorthi , Thomas Sun
IPC分类号： H04Q7/20
CPC分类号： H04L1/206 , H04L25/022 , H04L25/0232 , H04L25/0236 , H04L27/0012 , H04L27/2601
摘要： Systems and methodologies are described that facilitate monitoring transmitter performance in a wireless communication environment. A metric or metrics associated with one or more pilot symbols can be generated and used to evaluate performance. To generate pilot metrics, a signal analyzer can be used to sample the output of a transmitter and the sampled signal can be propagated to a processor. The processor can generate frequency domain channel estimates for subcarriers. Average channel estimates for the subcarriers can be used with the known pilot symbols to determine noise or error for each subcarrier, which can be used to generate the noise variance for each of the pilot symbols. A pilot modulation error metric can be generated based upon the average channel estimates and noise variance.
摘要翻译：描述了便于在无线通信环境中监视发射机性能的系统和方法。可以生成与一个或多个导频符号相关联的度量或度量，以用于评估性能。为了产生导频指标，可以使用信号分析器来对发射机的输出进行采样，并且采样信号可以传播到处理器。处理器可以为子载波生成频域信道估计。子载波的平均信道估计可以与已知导频符号一起使用以确定每个子载波的噪声或误差，其可用于为每个导频符号生成噪声方差。可以基于平均信道估计和噪声方差来产生导频调制误差度量。

95. 发明申请

US20090080378A1 Methods and Apparatus for RF Channel Switching in a Multi-Frequency Network 有权
标题翻译：用于多频网络中RF信道切换的方法和装置
公开(公告)号：US20090080378A1
公开(公告)日：2009-03-26
申请号：US12055981
申请日：2008-03-26
申请人： Binita Gupta , An Mei Chen , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi
发明人： Binita Gupta , An Mei Chen , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi
IPC分类号： H04W40/02
CPC分类号： H04W72/005 , H04H20/06 , H04H20/22 , H04H20/42 , H04L5/0023 , H04L5/0037 , H04L5/0091 , H04W16/02
摘要： Methods and apparatus for RF channel switching in a multi-frequency network. In an aspect, a method includes identifying a local area operations infrastructure (LOI) in the multi-frequency network, generating a channel description message that associates at least one descrambling sequence identifier with each RF channel associated with the LOI, respectively, and distributing the CDM over the LOI. In another aspect, a method includes receiving a CDM that associates at least one descrambling sequence identifier with each RF channel available in a LOI, detecting an RF channel switch event that identifies a selected RF channel, determining a selected descrambling sequence identifier from the CDM based on the selected RF channel, switching to the selected RF channel wherein the selected descrambling sequence identifier identifies a selected descrambling sequence to descramble desired content carried on the selected RF channel, and acquiring the desired content on the selected RF channel.
摘要翻译：多频网络中RF信道切换的方法和装置。一方面，一种方法包括识别多频网络中的局域操作基础结构（LOI），生成分别将至少一个解扰序列标识符与与LOI相关联的每个RF信道相关联的信道描述消息，并分发 CDM超过LOI。在另一方面，一种方法包括接收将至少一个解扰序列标识符与LOI中可用的每个RF信道相关联的CDM，检测识别所选RF信道的RF信道切换事件，从基于CDM确定所选解扰序列标识符在所选择的RF信道上，切换到所选择的RF信道，其中所选择的解扰序列标识符识别所选择的解扰序列，以对所选择的RF信道上承载的期望内容进行解扰，以及在所选择的RF信道上获取所需的内容。

96. 发明申请

US20090029705A1 Methods and Apparatus for Service Acquisition in a Multi-Frequency Network 有权
标题翻译：多频网络服务采集方法与设备
公开(公告)号：US20090029705A1
公开(公告)日：2009-01-29
申请号：US12141840
申请日：2008-06-18
申请人： Binita Gupta , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi
发明人： Binita Gupta , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi
IPC分类号： H04W36/00 , H04B1/18
CPC分类号： H04W48/18 , H04W28/18
摘要： Methods and apparatus for service acquisition in a multi-frequency network. In an aspect, a method is provided for service acquisition in a multi-frequency network. The method includes detecting a service acquisition trigger event and identifying a selected RF channel from an acquisition RF list based on signal strength, wherein the acquisition RF list identifies RF channels in one or more local operations infrastructures (LOIs) of the multi-frequency network. The method also includes acquiring a wide system on the selected RF channel, removing the selected RF channel from the acquisition RF list if the wide system can not be acquired on the selected RF channel, and repeating said operations of identifying, acquiring and removing until the wide system is acquired on the selected RF channel or a system acquisition timeout occurs.
摘要翻译：多频网络服务采集方法与装置。在一方面，提供了一种用于多频网络中的服务获取的方法。该方法包括基于信号强度检测服务获取触发事件和从获取RF列表识别所选择的RF信道，其中所述获取RF列表识别所述多频网络的一个或多个本地操作基础设施（LOI）中的RF信道。该方法还包括在所选择的RF信道上获取宽系统，如果在所选择的RF信道上不能获取宽系统，则从获取RF列表中移除所选择的RF信道，并重复所述识别，获取和去除的操作，直到在所选择的RF信道上获取宽系统，或发生系统采集超时。

97. 发明申请

US20070229340A1 AUTOMATIC GAIN CONTROL 失效
标题翻译：自动增益控制
公开(公告)号：US20070229340A1
公开(公告)日：2007-10-04
申请号：US11696105
申请日：2007-04-03
申请人： Raghuraman Krishnamoorthi , Vinay Murthy
发明人： Raghuraman Krishnamoorthi , Vinay Murthy
IPC分类号： H03M1/12
CPC分类号： H03G3/002 , H03G3/3089 , H03M1/185
摘要： Techniques for performing automatic gain control are described. In some aspects, the gain control is achieved with an apparatus having an analog-to-digital converter (ADC) and a digital variable gain amplifier (DVGA), the DVGA configured to receive a digital signal from the ADC, the DVGA having a processor configured to compute a gain using a base n logarithm based on the power of the digital signal output from the ADC, the processor being further configured to apply the gain to the digital signal.
摘要翻译：描述了执行自动增益控制的技术。在一些方面，利用具有模数转换器（ADC）和数字可变增益放大器（DVGA）的装置来实现增益控制，DVGA被配置为从ADC接收数字信号，DVGA具有处理器被配置为基于从ADC输出的数字信号的功率使用基本对数来计算增益，所述处理器还被配置为将所述增益应用于所述数字信号。

98. 发明申请

US20060215793A1 Method to track analog gain step magnitudes online during operation of wireless mobile devices 有权
标题翻译：在无线移动设备操作期间在线跟踪模拟增益步幅的方法
公开(公告)号：US20060215793A1
公开(公告)日：2006-09-28
申请号：US11373369
申请日：2006-03-10
申请人： Linbo Li , Fuyun Ling , Raghuraman Krishnamoorthi
发明人： Linbo Li , Fuyun Ling , Raghuraman Krishnamoorthi
IPC分类号： H04L27/08
CPC分类号： H03G3/3052 , H03F1/0205 , H03F3/24 , H03F2200/294 , H03F2200/372 , H03G1/0088 , H03G3/3068 , H04B1/109
摘要： Systems and methods are provided for tracking and compensating for analog gain mismatches or changes in a receiver. In an embodiment, a method is provided to track analog gain step magnitudes during operation of a device. The method includes employing an error signal between an automatic gain control (AGC) output and a reference level as input to a gain step magnitude tracking component. This also includes determining at least one compensation value from the AGC output to update a nominal gain step magnitude that tracks an actual gain step magnitude.
摘要翻译：提供系统和方法来跟踪和补偿接收机中的模拟增益失配或变化。在一个实施例中，提供了一种用于在设备操作期间追踪模拟增益步幅的方法。该方法包括采用自动增益控制（AGC）输出和参考电平之间的误差信号作为增益步长跟踪分量的输入。这还包括从AGC输出确定至少一个补偿值以更新追踪实际增益步幅的标称增益步幅。

99. 发明授权

US09036567B2 Logical channel mapping for increased utilization of transmission resources 有权
标题翻译：用于增加传输资源利用率的逻辑信道映射
公开(公告)号：US09036567B2
公开(公告)日：2015-05-19
申请号：US12699596
申请日：2010-02-03
申请人： Raghuraman Krishnamoorthi , Gordon Kent Walker , Fuyun Ling
发明人： Raghuraman Krishnamoorthi , Gordon Kent Walker , Fuyun Ling
IPC分类号： H04W72/04 , H04N21/63 , H04N21/2383 , H04N21/2385 , H04N21/438
CPC分类号： H04N21/631 , H04N21/2383 , H04N21/2385 , H04N21/4382
摘要： Methods, systems, and apparatus, including computer programs encoded on computer readable storage media, for increasing utilization of transmission resources by mapping data from a block of layered codec data onto a plurality of logical channels for transmission of the mapped data. Resource utilization may also be improved by mapping data from at least two layers of a block of layered of codec data onto a logical channel that supports only a single data channel carried by a transmit modulation scheme.
摘要翻译：方法，系统和装置，包括在计算机可读存储介质上编码的计算机程序，用于通过将来自分层编解码器数据块的数据映射到用于传输映射数据的多个逻辑信道上的数据来增加传输资源的利用。也可以通过将来自编解码器数据分层的至少两层的数据映射到仅支持由发送调制方案承载的单个数据信道的逻辑信道上来提高资源利用。

100. 发明申请

US20120230600A1 FAST REPEATED INTEGRAL IMAGES 有权
标题翻译：快速重复的整合图像
公开(公告)号：US20120230600A1
公开(公告)日：2012-09-13
申请号：US13230775
申请日：2011-09-12
申请人： Ming-Chang Tsai , Pawan K. Baheti , Murali R. Chari , Raghuraman Krishnamoorthi
发明人： Ming-Chang Tsai , Pawan K. Baheti , Murali R. Chari , Raghuraman Krishnamoorthi
IPC分类号： G06K9/40
CPC分类号： G06T5/20
摘要： A repeated integral images method filters image data in only two passes, e.g., the first pass filters horizontal rows of pixels and a second pass filters vertical columns of pixels, or in a single pass. The filter performs at least one infinite impulse response (IIR) filter and at least one finite impulse response (FIR) filter on the image data. A plurality of IIR filters and FIR filters maybe performed to approximate a Gaussian filter. By minimizing the number of passes, the data flow between the processing unit and the storage unit is greatly reduced compared to conventional repeated integral images method thereby improving computation time.
摘要翻译：重复的积分图像方法仅在两遍中对图像数据进行滤波，例如，第一遍滤波器是水平行像素，第二遍滤波垂直列的像素，或者单次通过。滤波器对图像数据执行至少一个无限脉冲响应（IIR）滤波器和至少一个有限脉冲响应（FIR）滤波器。可以执行多个IIR滤波器和FIR滤波器以近似高斯滤波器。通过最小化通过次数，与传统的重复积分图像方法相比，处理单元和存储单元之间的数据流大大减少，从而改善了计算时间。

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