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1. 发明申请

US20110080924A1 METHOD FOR TRANSMISSION OF TIME DIVISION MULTIPLEXED PILOT SYMBOLS TO AID CHANNEL ESTIMATION, TIME SYNCHRONIZATION, AND AGC BOOTSTRAPPING IN A MULTICAST WIRELESS SYSTEM 有权
标题翻译：用于传输多路复用引导符号的方法，用于在多路无线系统中进行信道估计，时间同步和AGC引导
公开(公告)号：US20110080924A1
公开(公告)日：2011-04-07
申请号：US12896780
申请日：2010-10-01
申请人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Ashok Mantravadi
发明人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Ashok Mantravadi
IPC分类号： H04J3/00
CPC分类号： H04L27/2613 , H04L5/0007 , H04L5/0048 , H04L25/023
摘要： Systems and methods are provided for the transmission of waveforms to aid channel estimation, timing synchronization, and AGC bootstrapping in a wireless network. The method includes inserting at least one TDM pilot symbol located at a transition between wide area and local area waveforms to facilitate decoding of the transmission block.
摘要翻译：提供了用于传输波形以辅助无线网络中的信道估计，定时同步和AGC自举的系统和方法。该方法包括插入位于广域和局域波形之间的转变处的至少一个TDM导频符号，以便于传输块的解码。

2. 发明授权

US07813383B2 Method for transmission of time division multiplexed pilot symbols to aid channel estimation, time synchronization, and AGC bootstrapping in a multicast wireless system 有权
标题翻译：用于传输时分复用导频符号以辅助多播无线系统中的信道估计，时间同步和AGC引导的方法
公开(公告)号：US07813383B2
公开(公告)日：2010-10-12
申请号：US11372930
申请日：2006-03-09
申请人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Ashok Mantravadi
发明人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Ashok Mantravadi
IPC分类号： H04J3/06
CPC分类号： H04L27/2613 , H04L5/0007 , H04L5/0048 , H04L25/023
摘要： Systems and methods are provided for the transmission of waveforms. The method includes inserting at least one TDM pilot symbol located at a transition between wide area and local area waveforms to facilitate decoding of the transmission block.
摘要翻译：提供了波形传输的系统和方法。该方法包括插入位于广域和局域波形之间的转变处的至少一个TDM导频符号，以便于传输块的解码。

3. 发明授权

US09356752B2 Wide area and local network ID transmission for communication systems 有权
公开(公告)号：US09356752B2
公开(公告)日：2016-05-31
申请号：US12948759
申请日：2010-11-18
申请人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajiv Vijayan
发明人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajiv Vijayan
IPC分类号： H04L5/00 , H04L27/26
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/0083 , H04L27/261
摘要： The embodiments utilize OFDM symbols to communicate network IDs. The IDs are encoded into symbols utilizing the network IDs as seeds to scramble respective pilots that are then transmitted by utilizing the symbols. The pilots can be structured into a single OFDM symbol and/or multiple OFDM symbols. The single symbol structure for transmitting the network IDs is independent of the number of network ID bits and minimizes frequency offset and Doppler effects. The multiple symbol structure allows a much coarser timing accuracy to be employed at the expense of transmitting additional symbols. Several embodiments employ a search function to find possible network ID candidates from a transmitted symbol and a selection function to find an optimum candidate from a network ID candidate list.

4. 发明授权

US08144818B2 Apparatus and methods for determining timing in a communication system 有权
标题翻译：用于确定通信系统中的定时的装置和方法
公开(公告)号：US08144818B2
公开(公告)日：2012-03-27
申请号：US11303487
申请日：2005-12-15
申请人： Krishna Kiran Mukkavilli , Michael Mao Wang , Raghuraman Krishnamoorthi
发明人： Krishna Kiran Mukkavilli , Michael Mao Wang , Raghuraman Krishnamoorthi
IPC分类号： H03D1/00
CPC分类号： H04L27/2662 , H04L25/0202 , H04L27/2686
摘要： Apparatus and methods for use in a wireless communication system are disclosed for determining a timing position for channel activity in order to resolve timing ambiguity. A disclosed apparatus includes a processor that determines when channel activity occurs in at least one of an early or a late arrival position in a communication channel estimate and unwraps the channel activity in either the early arrival position or the late arrival position to a corresponding late or early arrival unwrapped channel activity position in the wireless channel estimate. The processor correlates symbol data in the communication signal corresponding to both the channel activity and the unwrapped channel activity to symbol data of the main channel activity. The processor determines whether a correct timing position of the channel activity is one of the early or late arrival positions based on the correlations, thus resolving timing ambiguity. Complementary methods are also disclosed.
摘要翻译：公开了用于无线通信系统中的装置和方法，用于确定信道活动的定时位置，以便解决定时模糊。所公开的装置包括处理器，其确定在通信信道估计中的早期或迟到到达位置中的至少一个中何时发生信道活动，并且将早期到达位置或延迟到达位置中的信道活动解包到相应的延迟或在无线信道估计中提前到达解开的频道活动位置。处理器将对应于信道活动和解开的信道活动的通信信号中的符号数据与主信道活动的符号数据相关联。处理器基于相关性确定信道活动的正确定时位置是早期还是迟到位置之一，从而解决定时模糊度。还公开了互补方法。

5. 发明申请

US20100316044A1 TIMING SYNCHRONIZATION AND CHANNEL ESTIMATION AT A TRANSITION BETWEEN LOCAL AND WIDE AREA WAVEFORMS USING A DESIGNATED TDM PILOT 有权
标题翻译：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
IPC分类号： H04W56/00 , H04W40/00
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。

6. 发明授权

US08644214B2 Timing synchronization and channel estimation at a transition between local and wide area waveforms using a designated TDM pilot 有权
标题翻译：使用指定的TDM导频在本地和广域波形之间转换的定时同步和信道估计
公开(公告)号：US08644214B2
公开(公告)日：2014-02-04
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
IPC分类号： H04B7/212
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。

7. 发明授权

US08432933B2 Method for transmission of time division multiplexed pilot symbols to aid channel estimation, time synchronization, and AGC bootstrapping in a multicast wireless system 有权
标题翻译：用于传输时分复用导频符号以辅助多播无线系统中的信道估计，时间同步和AGC引导的方法
公开(公告)号：US08432933B2
公开(公告)日：2013-04-30
申请号：US12896780
申请日：2010-10-01
申请人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Ashok Mantravadi
发明人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Ashok Mantravadi
IPC分类号： H04J3/00
CPC分类号： H04L27/2613 , H04L5/0007 , H04L5/0048 , H04L25/023
摘要： Systems and methods are provided for the transmission of waveforms to aid channel estimation, timing synchronization, and AGC bootstrapping in a wireless network. The method includes inserting at least one TDM pilot symbol located at a transition between wide area and local area waveforms to facilitate decoding of the transmission block.
摘要翻译：提供了用于传输波形以辅助无线网络中的信道估计，定时同步和AGC自举的系统和方法。该方法包括插入位于广域和局域波形之间的转变处的至少一个TDM导频符号，以便于传输块的解码。

8. 发明申请

US20110058469A1 WIDE AREA AND LOCAL NETWORK ID TRANSMISSION FOR COMMUNICATION SYSTEMS 有权
标题翻译：用于通信系统的宽带和本地网络标识传输
公开(公告)号：US20110058469A1
公开(公告)日：2011-03-10
申请号：US12948759
申请日：2010-11-18
申请人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajiv Vijayan
发明人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajiv Vijayan
IPC分类号： H04J11/00 , H04L27/28
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/0083 , H04L27/261
摘要： The embodiments utilize OFDM symbols to communicate network IDs. The IDs are encoded into symbols utilizing the network IDs as seeds to scramble respective pilots that are then transmitted by utilizing the symbols. The pilots can be structured into a single OFDM symbol and/or multiple OFDM symbols. The single symbol structure for transmitting the network IDs is independent of the number of network ID bits and minimizes frequency offset and Doppler effects. The multiple symbol structure allows a much coarser timing accuracy to be employed at the expense of transmitting additional symbols. Several embodiments employ a search function to find possible network ID candidates from a transmitted symbol and a selection function to find an optimum candidate from a network ID candidate list.
摘要翻译：这些实施例利用OFDM符号来传送网络ID。 ID被编码成使用网络ID作为种子的符号，以对通过利用符号进行发送的各个导频进行加扰。导频可以被构造成单个OFDM符号和/或多个OFDM符号。用于发送网络ID的单个符号结构与网络ID比特数无关，并且使频偏和多普勒效应最小化。多符号结构允许以牺牲传输附加符号为代价采用更粗糙的定时精度。几个实施例采用搜索功能来从发送的符号和选择功能中找到可能的网络ID候选，以从网络ID候选列表中找到最佳候选。

9. 发明授权

US07782806B2 Timing synchronization and channel estimation at a transition between local and wide area waveforms using a designated TDM pilot 有权
标题翻译：使用指定的TDM导频在本地和广域波形之间转换的定时同步和信道估计
公开(公告)号：US07782806B2
公开(公告)日：2010-08-24
申请号：US11373607
申请日：2006-03-09
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
IPC分类号： H04B7/00
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。

10. 发明授权

US07852822B2 Wide area and local network ID transmission for communication systems 有权
标题翻译：通信系统的广域和本地网络ID传输
公开(公告)号：US07852822B2
公开(公告)日：2010-12-14
申请号：US11021310
申请日：2004-12-22
申请人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajiv Vijayan
发明人： Michael Mao Wang , Bojan Vrcelj , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi , Rajiv Vijayan
IPC分类号： H04J1/00
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/0083 , H04L27/261
摘要： The embodiments utilize OFDM symbols to communicate network IDs. The IDs are encoded into symbols utilizing the network IDs as seeds to scramble respective pilots that are then transmitted by utilizing the symbols. The pilots can be structured into a single OFDM symbol and/or multiple OFDM symbols. The single symbol structure for transmitting the network IDs is independent of the number of network ID bits and minimizes frequency offset and Doppler effects. The multiple symbol structure allows a much coarser timing accuracy to be employed at the expense of transmitting additional symbols. Several embodiments employ a search function to find possible network ID candidates from a transmitted symbol and a selection function to find an optimum candidate from a network ID candidate list.
摘要翻译：这些实施例利用OFDM符号来传送网络ID。 ID被编码成使用网络ID作为种子的符号，以对通过利用符号进行发送的各个导频进行加扰。导频可以被构造成单个OFDM符号和/或多个OFDM符号。用于发送网络ID的单个符号结构与网络ID比特数无关，并且使频偏和多普勒效应最小化。多符号结构允许以牺牲传输附加符号为代价采用更粗糙的定时精度。几个实施例采用搜索功能来从发送的符号和选择功能中找到可能的网络ID候选，以从网络ID候选列表中找到最佳候选。

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