公开(公告)号：US07411898B2

公开(公告)日：2008-08-12

申请号：US10956356

申请日：2004-09-30

申请人： Yossi Erlich ,  Assaf Gurevitz ,  Eyal Hochdorf

发明人： Yossi Erlich ,  Assaf Gurevitz ,  Eyal Hochdorf

IPC分类号： H04J11/00

CPC分类号： H04L25/03866 ,  H04B2001/71563 ,  H04L5/0007 ,  H04L5/0096 ,  H04L27/2613 ,  H04W84/12 ,  H04W99/00

摘要： Preamble generator for a multiband frequency division multplexing (OFDM) tranceiver of a wireless personal area network (WPAN) being switchable between a time frequency interleaving (TFI)-mode wherein data packets are transmitted by said transceiver in different frequency bands according to a predetermined frequency hopping pattern and a fixed frequency interleaving (FFI) mode wherein data packets are transmitted by the transceiver in at least one fixed frequency band, wherein said preamble generator scrambles in the fixed frequency interleaving (FFI) mode a predetermined preamble of the data packets by multiplying said preamble with a pseudo random data sequence to flatten a power spectrum of said preamble.

摘要翻译： 用于无线个域网（WPAN）的多频分频多址（OFDM）收发器的前导码发生器，可在时间频率交织（TFI）模式之间切换，其中数据分组根据预定频率在不同频带中由所述收发机发送 跳频模式和固定频率交织（FFI）模式，其中数据分组由收发机在至少一个固定频带中发送，其中所述前导码生成器以固定频率交织（FFI）模式加扰数据分组的预定前导码， 所述前同步码具有伪随机数据序列，以平坦化所述前同步码的功率谱。

公开(公告)号：US20080261536A1

公开(公告)日：2008-10-23

申请号：US12164752

申请日：2008-06-30

申请人： Eyal HOCHDORF ,  Ran TIMAR ,  Amir BEERI ,  David GAZELLE

发明人： Eyal HOCHDORF ,  Ran TIMAR ,  Amir BEERI ,  David GAZELLE

IPC分类号： H04B17/00 ,  H01Q3/22

CPC分类号： G01S7/4017

摘要： A method for determining changes in internal delays of RF units, the RF units including a plurality of receivers and transmitters. The method includes providing initial direct signals' time of arrivals of the RF units initial internal delays of the RF units. Following this, each transmitter transmitting a direct signal, and the real-time direct signal's time of arrivals of the RF units, are measured. Then, changes in internal delays of the RF units are calculated based on the real-time direct signals' time of arrivals and initial direct signals' time of arrivals. And finally, real-time internal delays of the RF units are calculated based on the changes in internal delays and the initial internal delays of the RF units.

摘要翻译： 一种用于确定RF单元的内部延迟的变化的方法，所述RF单元包括多个接收器和发射器。 该方法包括提供初始直接信号RF单元到达的时间RF单元的初始内部延迟。 接下来，测量发射直接信号的每个发射机和实时直接信号的RF单元的到达时间。 然后，基于实时直接信号的到达时间和初始直接信号的到达时间来计算RF单元的内部延迟的变化。 最后，RF单元的实时内部延迟是基于内部延迟的变化和RF单元的初始内部延迟来计算的。

公开(公告)号：US20050265220A1

公开(公告)日：2005-12-01

申请号：US10956356

申请日：2004-09-30

申请人： Yossi Erlich ,  Assaf Gurevitz ,  Eyal Hochdorf

发明人： Yossi Erlich ,  Assaf Gurevitz ,  Eyal Hochdorf

IPC分类号： H04B1/713 ,  H04J11/00 ,  H04J13/00 ,  H04L5/02 ,  H04L12/28 ,  H04L12/56 ,  H04L25/03 ,  H04L27/26

CPC分类号： H04L25/03866 ,  H04B2001/71563 ,  H04L5/0007 ,  H04L5/0096 ,  H04L27/2613 ,  H04W84/12 ,  H04W99/00

摘要： Preamble generator for a multiband frequency division multplexing (OFDM) tranceiver of a wireless personal area network (WPAN) being switchable between a time frequency interleaving (TFI)-mode wherein data packets are transmitted by said transceiver in different frequency bands according to a predetermined frequency hopping pattern and a fixed frequency interleaving (FFI) mode wherein data packets are transmitted by the transceiver in at least one fixed frequency band, wherein said preamble generator scrambles in the fixed frequency interleaving (FFI) mode a predetermined preamble of the data packets by multiplying said preamble with a pseudo random data sequence to flatten a power spectrum of said preamble.

摘要翻译： 用于无线个域网（WPAN）的多频分频多址（OFDM）收发器的前导码发生器，可在时间频率交织（TFI）模式之间切换，其中数据分组根据预定频率在不同频带中由所述收发机发送 跳频模式和固定频率交织（FFI）模式，其中数据分组由收发机在至少一个固定频带中发送，其中所述前导码生成器以固定频率交织（FFI）模式加扰数据分组的预定前导码， 所述前同步码具有伪随机数据序列，以平坦化所述前同步码的功率谱。

公开(公告)号：US20110205121A1

公开(公告)日：2011-08-25

申请号：US13042072

申请日：2011-03-07

申请人： Eyal HOCHDORF ,  Nimrod SHANI ,  Ran TIMAR

发明人： Eyal HOCHDORF ,  Nimrod SHANI ,  Ran TIMAR

IPC分类号： H01Q3/22

CPC分类号： G01S7/4017 ,  G01S7/025 ,  G01S7/03 ,  G01S7/4008 ,  G01S7/4021 ,  G01S7/4052 ,  G01S13/87 ,  G01S2007/4086

摘要： There are provided a method of determining real time location of a reflecting object and a system thereof. The method comprises: a) providing initial internal delays of said RF units, and providing initial direct signal time of arrivals characterizing direct links between RF units corresponding to said operational links; b) transmitting operational signals, and measuring real time of arrivals characterizing operational links; c) transmitting direct signals via direct links corresponding to said operational links, and measuring real time direct signal time of arrivals characterizing said direct links; d) calculating, separately for each of the operational links, cumulative real time internal delays in RF units, said calculating based on measured real time direct signal time of arrival in corresponding direct link, respective initial direct signal time of arrival and initial internal delays of respective RF units; e) calculating relative delays between the operational links and aligning the respective links; and f) determining the real time location of the object, wherein operational signal and corresponding direct signal are constituted by different lobe components of a same signal transmitted between respective RF units.

摘要翻译： 提供了一种确定反射物体及其系统的实时位置的方法。 该方法包括：a）提供所述RF单元的初始内部延迟，以及提供表征对应于所述操作链路的RF单元之间的直接链路的到达初始直接信号时间; b）发送操作信号，并测量实际操作链路的到达时间; c）通过对应于所述操作链路的直接链路发送直接信号，以及测量表征所述直接链路的实时直达信号时间; d）针对每个操作链路单独计算RF单元中的累积实时内部延迟，所述计算基于所测量的实时直接信号到达对应直接链路的时间，相应的初始直接信号到达时间和初始内部延迟 各RF单元; e）计算操作链路之间的相对延迟并对齐各自的链接; 以及f）确定所述物体的实时位置，其中操作信号和对应的直接信号由在相应RF单元之间传输的相同信号的不同波瓣分量构成。

公开(公告)号：US07925251B2

公开(公告)日：2011-04-12

申请号：US12164752

申请日：2008-06-30

申请人： Eyal Hochdorf ,  Ran Timar ,  Amir Beeri ,  David Gazelle

发明人： Eyal Hochdorf ,  Ran Timar ,  Amir Beeri ,  David Gazelle

IPC分类号： H04W24/00 ,  H04B17/00

CPC分类号： G01S7/4017

摘要： A method for determining changes in internal delays of RF units, the RF units including a plurality of receivers and transmitters. The method includes providing initial direct signals' time of arrivals of the RF units initial internal delays of the RF units. Following this, each transmitter transmitting a direct signal, and the real-time direct signal's time of arrivals of the RF units, are measured. Then, changes in internal delays of the RF units are calculated based on the real-time direct signals' time of arrivals and initial direct signals' time of arrivals. And finally, real-time internal delays of the RF units are calculated based on the changes in internal delays and the initial internal delays of the RF units.

摘要翻译： 一种用于确定RF单元的内部延迟的变化的方法，所述RF单元包括多个接收器和发射器。 该方法包括提供初始直接信号RF单元到达的时间RF单元的初始内部延迟。 接下来，测量发射直接信号的每个发射机和实时直接信号的RF单元的到达时间。 然后，基于实时直接信号的到达时间和初始直接信号的到达时间来计算RF单元的内部延迟的变化。 最后，RF单元的实时内部延迟是基于内部延迟的变化和RF单元的初始内部延迟来计算的。