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41.发明申请TIMING SYNCHRONIZATION AND CHANNEL ESTIMATION AT A TRANSITION BETWEEN LOCAL AND WIDE AREA WAVEFORMS USING A DESIGNATED TDM PILOT 有权使用指定的TDM引导程序进行本地和宽带波形之间的转换的时序同步和信道估计公开(公告)号：US20100316044A1
公开(公告)日：2010-12-16
申请号：US12862740
申请日：2010-08-24
申请人： Bojan VRCELJ , Ashok Mantravadi , Fuyun Ling , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Michael Mao Wang
发明人： Bojan VRCELJ , Ashok Mantravadi , Fuyun Ling , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Michael Mao Wang
CPC分类号： H04L27/2613 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04L25/0216 , H04L25/0226 , H04L25/03866 , H04L27/2662 , H04L27/2675
摘要： Systems and methods are provided for channel estimation and timing synchronization in a wireless network. In an embodiment, a method is provided for time synchronization at a wireless receiver. The method includes decoding at least one TDM pilot symbol located at a transition between wide and local waveforms and processing the TDM pilot symbol to perform time synchronization for a wireless receiver. Methods for channel estimation at a wireless receiver are also provided. This includes decoding at least one TDM pilot symbol and receiving the TDM pilot symbol from an OFDM broadcast to facilitate channel estimation for a wireless receiver.
摘要翻译： 提供了系统和方法用于无线网络中的信道估计和定时同步。 在一个实施例中，提供了一种用于在无线接收机处进行时间同步的方法。 该方法包括解码位于宽和局部波形之间的转变处的至少一个TDM导频符号，并处理TDM导频符号以对无线接收机执行时间同步。 还提供了在无线接收机处进行信道估计的方法。 这包括解码至少一个TDM导频符号并从OFDM广播接收TDM导频符号以便于无线接收机的信道估计。
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42.发明申请EXTRACTING INFORMATION FROM POSITIONING PILOT CHANNEL SYMBOLS IN FORWARD LINK ONLY SYSTEM 审中-公开从前进链接系统中的定位导频信号提取信息公开(公告)号：US20100158160A1
公开(公告)日：2010-06-24
申请号：US12643664
申请日：2009-12-21
IPC分类号： H04L27/06
CPC分类号： H04L27/2647 , H04L25/0212 , H04L25/022 , H04L25/023
摘要： Methods, systems, and apparatus, including computer programs encoded on computer readable storage media, for extracting transmitter identification information from the Positioning Pilot Channel (PPC) of a MediaFLO superframe. One of a wide area differentiator (WID) value and a local area differentiator (LID) value associated with the transmitter is determined based on signaling in a first interlace of a symbol received via the PPC. A time domain channel estimate is computed for the PPC based on signaling in a plurality of interlaces of the symbol and also based on the one of the WID and LID values. The time domain channel estimate is used to obtain a frequency domain channel estimate for a second interlace of the symbol that carries the transmitter identification information, and the frequency domain channel estimate is used to determine the transmitter identification information.
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，用于从MediaFLO超帧的定位导频信道（PPC）提取发射机识别信息。 基于经由PPC接收的符号的第一交错中的信令来确定与发送器相关联的广域微分器（WID）值和局部区域微分器（LID）值之一。 基于符号的多个交织中的信令，并且还基于WID和LID值中的一个来计算PPC的时域信道估计。 使用时域信道估计来获得携带发射机识别信息的符号的第二交错的频域信道估计，并且使用频域信道估计来确定发射机识别信息。
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43.发明申请METHODS AND APPARATUS FOR TIME TRACKING USING ASSISTANCE FROM TDM PILOTS IN A COMMUNICATION NETWORK 有权在通信网络中使用TDM PILOTS协助进行时间跟踪的方法和装置公开(公告)号：US20080260008A1
公开(公告)日：2008-10-23
申请号：US11970381
申请日：2008-01-07
IPC分类号： H04B1/707
CPC分类号： H04L27/2662 , H04L25/0216 , H04L25/0224 , H04L27/2675 , H04L27/2695
摘要： Methods and apparatus for time tracking using assistance from TDM pilots in a communication network. In an aspect, a method is provided for time tracking in a device operating on a communication network, wherein the device performs a time tracking algorithm. The method includes determining a delay spread, and modifying at least one parameter used by the time tracking algorithm based on the delay spread. In another aspect, an apparatus is provided for time tracking in a device operating on a communication network, wherein the device performs a time tracking algorithm. The apparatus includes computation logic for determining a delay spread, and control logic for modifying at least one parameter used by the time tracking algorithm based on the delay spread.
摘要翻译： 在通信网络中使用TDM导频协助进行时间跟踪的方法和装置。 在一方面，提供了一种用于在通信网络上操作的设备中进行时间跟踪的方法，其中该设备执行时间跟踪算法。 该方法包括确定延迟扩展，以及基于延迟扩展修改由时间跟踪算法使用的至少一个参数。 在另一方面，提供了一种用于在通信网络上操作的设备中进行时间跟踪的设备，其中该设备执行时间跟踪算法。 该装置包括用于确定延迟扩展的计算逻辑，以及用于基于延迟扩展修改由时间跟踪算法使用的至少一个参数的控制逻辑。
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公开(公告)号：US20080242225A1
公开(公告)日：2008-10-02
申请号：US11834679
申请日：2007-08-06
IPC分类号： H04B17/02
CPC分类号： H04L1/206 , H04L1/24 , H04L27/2626 , H04L2001/0097
摘要： Apparatus and methods are disclosed for testing or qualifying a repeater/transmitter in a multicarrier system by utilizing modulation error ratio (MER). In particular, a disclosed method includes determining an estimated effective modulation error ratio of an output of the repeater/transmitter. The estimated effective modulation error ratio is compared with a predetermined threshold, and the repeater/transmitter is qualified when the estimated effective modulation error ratio is greater than the predetermined threshold. Using an estimated modulation error ratio for repeater/transmitters, which can have non-flat modulation error ratios over a total number of subcarriers, affords an efficient method to test and qualify repeater/transmitters.
摘要翻译： 公开了用于通过利用调制误差比（MER）在多载波系统中测试或限定中继器/发射机的装置和方法。 具体地，所公开的方法包括确定中继器/发射机的输出的估计有效调制误差比。 将估计的有效调制误差比与预定阈值进行比较，并且当估计的有效调制误差比大于预定阈值时，中继器/发射机被限定。 对于可能在副载波总数上具有非平坦调制误差比的中继器/发射机使用估计的调制误差率，提供了测试和限定中继器/发射机的有效方法。
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公开(公告)号：US20080020751A1
公开(公告)日：2008-01-24
申请号：US11828336
申请日：2007-07-25
IPC分类号： H04Q7/20
CPC分类号： H04W72/005
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. 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。 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。
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公开(公告)号：US09391751B2
公开(公告)日：2016-07-12
申请号：US12179505
申请日：2008-07-24
申请人： Ashok Mantravadi , Murali Ramaswamy Chari , Michael Mao Wang , Fuyun Ling , Rajiv Vijayan , Raghuraman Krishnamoorthi
发明人： Ashok Mantravadi , Murali Ramaswamy Chari , Michael Mao Wang , Fuyun Ling , Rajiv Vijayan , Raghuraman Krishnamoorthi
CPC分类号： H04L5/0044 , H03M13/271 , H03M13/2957 , H03M13/31 , H04L1/0066 , H04L1/0071 , H04L5/0007 , H04L5/0042 , H04L5/0064 , H04L27/2602 , H04L27/2634
摘要： A system and method for frequency diversity uses interleaving in a wireless communication system utilizing orthogonal frequency division multiplexing (OFDM) with various FFT sizes. Subcarriers of one or more interlaces are interleaved in a bit reversal fashion and the one or more interlaces are interleaved.
摘要翻译： 用于频率分集的系统和方法使用利用具有各种FFT大小的正交频分复用（OFDM）的无线通信系统中的交织。 一个或多个交错的子载波以位反向方式进行交织，并且所述一个或多个交错交织。
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47.发明授权公开(公告)号：US08842612B2
公开(公告)日：2014-09-23
申请号：US12141840
申请日：2008-06-18
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。
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公开(公告)号：US08705370B2
公开(公告)日：2014-04-22
申请号：US12722308
申请日：2010-03-11
IPC分类号： H04W4/00
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。
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公开(公告)号：US08676115B2
公开(公告)日：2014-03-18
申请号：US11834679
申请日：2007-08-06
IPC分类号： H04B17/02
CPC分类号： H04L1/206 , H04L1/24 , H04L27/2626 , H04L2001/0097
摘要： Apparatus and methods are disclosed for testing or qualifying a repeater/transmitter in a multicarrier system by utilizing modulation error ratio (MER). In particular, a disclosed method includes determining an estimated effective modulation error ratio of an output of the repeater/transmitter. The estimated effective modulation error ratio is compared with a predetermined threshold, and the repeater/transmitter is qualified when the estimated effective modulation error ratio is greater than the predetermined threshold. Using an estimated modulation error ratio for repeater/transmitters, which can have non-flat modulation error ratios over a total number of subcarriers, affords an efficient method to test and qualify repeater/transmitters.
摘要翻译： 公开了用于通过利用调制误差比（MER）在多载波系统中测试或限定中继器/发射机的装置和方法。 具体地，所公开的方法包括确定中继器/发射机的输出的估计有效调制误差比。 将估计的有效调制误差比与预定阈值进行比较，并且当估计的有效调制误差比大于预定阈值时，中继器/发射机被限定。 对于可能在副载波总数上具有非平坦调制误差比的中继器/发射机使用估计的调制误差率，提供了测试和限定中继器/发射机的有效方法。
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50.发明授权公开(公告)号：US08571066B2
公开(公告)日：2013-10-29
申请号：US12051209
申请日：2008-03-19
申请人： Binita Gupta , An Mei Chen , Devarshi Shah , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi , Taoufik Tani
发明人： Binita Gupta , An Mei Chen , Devarshi Shah , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi , Taoufik Tani
IPC分类号： H04J1/00
摘要： Methods and apparatus for RF channel switching in a multi-frequency network. In an aspect, a method includes identifying a multiplex set that comprises one or more content flows, wherein the multiplex set is one of a vertical multiplex (VM) set and a unified multiplex (UM) set, generating an overhead message that associates one or more RF carrier frequencies with the one or more content flows, and transmitting the overhead message over the multi-frequency network. An apparatus includes input logic configured to receive an overhead message that associates one or more content flows with one or more RF carrier frequencies, and processing logic configured to detect a channel switch event that identifies a selected content flow, determine a selected RF carrier frequency associated with the selected content flow based on the overhead message, and switch to the selected RF carrier frequency to receive the selected content flow.
摘要翻译： 多频网络中RF信道切换的方法和装置。 一方面，一种方法包括识别包括一个或多个内容流的多路复用集合，其中多路复用集合是垂直多路复用（VM）集合和统一多路复用（UM）集合之一，生成将开销消息与一个或多个内容流相关联的开销消息， 具有一个或多个内容流的更多RF载波频率，以及通过多频网络发送开销消息。 一种装置包括输入逻辑，其被配置为接收将一个或多个内容流与一个或多个RF载波频率相关联的开销消息，以及被配置为检测识别所选内容流的信道切换事件的处理逻辑，确定所选择的RF载波频率相关联 所选择的内容流程基于开销消息，并且切换到所选择的RF载波频率以接收所选择的内容流。
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