专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20100061271A1 APPARATUS AND METHOD FOR ENABLING DISCOVERY OF WIRELESS DEVICES 有权
标题翻译：用于实现无线设备发现的装置和方法
公开(公告)号：US20100061271A1
公开(公告)日：2010-03-11
申请号：US12522966
申请日：2008-01-17
申请人： Seyed-Alireza Seyedi-Esfahani , Chun-Ting Chou , Richard Chen
发明人： Seyed-Alireza Seyedi-Esfahani , Chun-Ting Chou , Richard Chen
IPC分类号： H04L12/28 , H04W84/02
CPC分类号： H04L1/0071 , H04L1/0043 , H04L1/0052
摘要： A wireless device (A) in a first antenna sector (40) is discovered using a directional antenna (322), which sends and receives signals in multiple antenna sectors. Multiple primary beacons are transmitted in corresponding primary beacon time slots (1P-4P), which correspond to the antenna sectors (10-40) and have associated secondary beacon time slots (1s-4s). A secondary beacon is received from the wireless device in a first secondary beacon time slot (4sA) associated with a first primary beacon time slot (4P) corresponding to the first sector, the secondary beacon being responsive to a first primary beacon included in the first primary beacon time slot. An additional first secondary beacon time slot (4s) is added in association with the first primary beacon time slot. The additional first secondary beacon time slot enables an additional wireless device in the first sector to send an additional secondary beacon in response to a subsequent first primary beacon included in the first primary beacon time slot.
摘要翻译：使用在多个天线扇区中发送和接收信号的定向天线（322）发现第一天线扇区（40）中的无线设备（A）。在相应的主信标时隙（1P-4P）中发送多个主信标，其对应于天线扇区（10-40）并且具有相关联的辅信标时隙（1s-4s）。在与对应于第一扇区的第一主信标时隙（4P）相关联的第一辅信标时隙（4sA）中从无线设备接收辅信标，辅信标响应于包括在第一信标中的第一主信标主信标时隙。与第一主信标时隙相关联地附加附加的第一辅助信标时隙（4s）。附加的第一辅助信标时隙使得第一扇区中的附加无线设备响应于包括在第一主信标时隙中的后续的第一主信标来发送附加的辅助信标。

2. 发明申请

US20080260068A1 Method and System of Diversity Transmission of Data 有权
标题翻译：数据分集传输方法与系统
公开(公告)号：US20080260068A1
公开(公告)日：2008-10-23
申请号：US12067337
申请日：2006-09-19
申请人： Seyed-Alireza Seyedi-Esfahani
发明人： Seyed-Alireza Seyedi-Esfahani
IPC分类号： H04L27/36
CPC分类号： H04L27/362 , H04L25/067 , H04L27/3416 , H04L27/38
摘要： A method (600) of communicating a plurality of data bits over L diversity channels uses a constellation set comprising a plurality (L) of M-point quadrature amplitude modulation (QAM) constellations corresponding to the L diversity channels. The constellations do not exhibit overlapping data points, and provide full diversity. The method includes mapping (650) k*L data bits to L QAM transmission symbols in the L QAM constellation sets, and transmitting (660) the L QAM symbols where M=2k*L. Each of each of the k*L data bits is directly mapped into all of the L QAM symbols of the QAM constellation set, and for all combinations of k*L bits, changing a value of one of k*L data bits changes all of the L symbols.
摘要翻译：通过L个分集信道传送多个数据位的方法（600）使用包括对应于L个分集信道的多个（L）个M点正交幅度调制（QAM）星座的星座集。星座不显示重叠的数据点，并提供完整的多样性。该方法包括在L QAM星座集中映射（650）k * L个数据比特到L QAM传输符号，并发送（660）L QAM符号，其中M = 2K * L。 k * L数据位中的每一个直接映射到QAM星座集的所有L QAM符号中，并且对于k * L位的所有组合，改变k * L个数据位中的一个的值改变全部 L个符号。

3. 发明申请

US20080247483A1 Space Time Coded Mb-Ofdm Uwb System 有权
标题翻译：空间编码Mb-Ofdm Uwb系统
公开(公告)号：US20080247483A1
公开(公告)日：2008-10-09
申请号：US12067345
申请日：2006-09-22
申请人： Seyed-Alireza Seyedi-Esfahani
发明人： Seyed-Alireza Seyedi-Esfahani
IPC分类号： H04B7/02
CPC分类号： H04L1/0668 , H04B1/71635 , H04L5/0023 , H04L5/0044 , H04L27/2626
摘要： A system, apparatus, and method is provided for space-time coding a multiband OFDM UWB system that employs a scheme that transmits channel symbols corresponding to an incoming signal on the same sub-carrier (204.i 206.i) of different antennas (202.1 202.2).
摘要翻译：提供了一种系统，装置和方法，用于对多频带OFDM UWB系统进行时空编码，所述多频带OFDM UWB系统采用在不同天线的相同子载波（204.i.I.I. i）上发送对应于输入信号的信道符号的方案） 202.1 202.2）。

4. 发明授权

US08902928B2 System and method for efficient transmission of multimedia and data 有权
标题翻译：多媒体和数据有效传输的系统和方法
公开(公告)号：US08902928B2
公开(公告)日：2014-12-02
申请号：US12522940
申请日：2008-01-16
申请人： Seyed-Alireza Seyedi-Esfahani , Dagnachew Birru
发明人： Seyed-Alireza Seyedi-Esfahani , Dagnachew Birru
IPC分类号： H04J3/24 , H04L1/00
CPC分类号： H04L1/0089 , H04L1/0041 , H04L1/0061 , H04L1/007 , H04L1/0075 , H04L2001/0098
摘要： A system and method for efficient transmission of different types of source data in the same packet, hence, enabling efficient transmission of multimedia and data content with unequal error protection are provided. The present packet structure is defined wherein the packet consists of a number of segments or payloads. The packet includes a field indicative of a number of payloads included in the packet; and at least one data field for each payload in the packet, the at least one data field defining at least one characteristic of the payload. The at least one data field includes a length of the payload, modulation and coding scheme, existence of a frame check sum (FCS), and existence of a midamble. The at least one data field may further include a continuation element indicative of whether two consecutive payloads are portions of a same data frame.
摘要翻译：提供了用于在相同分组中有效地传输不同类型的源数据的系统和方法，因此，提供了具有不等错误保护的多媒体和数据内容的有效传输。定义了当前分组结构，其中分组由多个分段或有效载荷组成。分组包括指示分组中包括的有效载荷数量的字段; 以及用于分组中的每个有效载荷的至少一个数据字段，所述至少一个数据字段定义所述有效载荷的至少一个特性。所述至少一个数据字段包括有效负载的长度，调制和编码方案，帧校验和（FCS）的存在以及中间码的存在。所述至少一个数据字段还可以包括指示两个连续有效负载是相同数据帧的部分的继续元素。

5. 发明授权

US08902820B2 Handshaking method and apparatus for OFDM systems with unknown sub-channel availability 有权
标题翻译：具有未知子信道可用性的OFDM系统的握手方法和装置
公开(公告)号：US08902820B2
公开(公告)日：2014-12-02
申请号：US11993530
申请日：2006-06-27
申请人： Carlos Cordeiro , Seyed-Alireza Seyedi-Esfahani
发明人： Carlos Cordeiro , Seyed-Alireza Seyedi-Esfahani
IPC分类号： H04W4/00 , H04L27/26 , H04L5/00
CPC分类号： H04L5/0058 , H04L5/0007 , H04L5/0044 , H04L27/2613
摘要： A method and device for determining available communication sub-channels in an OFDM communication system is disclosed. The method comprises the steps of transmitting, on at least one first sub-channel (207), information (210) regarding sub-channels available for a first transmission of at least one first data packet (245), receiving, on at least one second sub-channel (250), information (225) regarding sub-channels available for a second transmission, determining at least one set of available sub-channels based on the information regarding the first and second transmissions (430). In one aspect of the invention, at least one set of the determined available sub-channels is further provided to a receiving system. The information is being provided in a separate transmission, or within a data packet, or within each subsequent data packet or in selected data packets.
摘要翻译：公开了一种用于在OFDM通信系统中确定可用通信子信道的方法和设备。该方法包括以下步骤：在至少一个第一子信道（207）上发送关于可用于第一传输至少一个第一数据分组（245）的子信道的信息（210），在至少一个第二子信道（250），关于可用于第二传输的子信道的信息（225），基于关于第一和第二传输的信息确定至少一组可用子信道（430）。在本发明的一个方面，进一步将至少一组确定的可用子信道提供给接收系统。该信息在单独的传输中，或在数据分组内，或在每个后续数据分组内或在选定的数据分组中提供。

6. 发明授权

US08116231B2 Apparatus and method for enabling discovery of wireless devices 有权
标题翻译：用于实现无线设备发现的装置和方法
公开(公告)号：US08116231B2
公开(公告)日：2012-02-14
申请号：US12522966
申请日：2008-01-17
申请人： Seyed-Alireza Seyedi-Esfahani , Chun-Ting Chou , Richard Chen
发明人： Seyed-Alireza Seyedi-Esfahani , Chun-Ting Chou , Richard Chen
IPC分类号： H04L12/28
CPC分类号： H04L1/0071 , H04L1/0043 , H04L1/0052
摘要： A wireless device (A) in a first antenna sector (40) is discovered using a directional antenna (322), which sends and receives signals in multiple antenna sectors. Multiple primary beacons are transmitted in corresponding primary beacon time slots (1P-4P), which correspond to the antenna sectors (10-40) and have associated secondary beacon time slots (1s-4s). A secondary beacon is received from the wireless device in a first secondary beacon time slot (4sA) associated with a first primary beacon time slot (4P) corresponding to the first sector, the secondary beacon being responsive to a first primary beacon included in the first primary beacon time slot. An additional first secondary beacon time slot (4s) is added in association with the first primary beacon time slot. The additional first secondary beacon time slot enables an additional wireless device in the first sector to send an additional secondary beacon in response to a subsequent first primary beacon included in the first primary beacon time slot.
摘要翻译：使用在多个天线扇区中发送和接收信号的定向天线（322）发现第一天线扇区（40）中的无线设备（A）。在相应的主信标时隙（1P-4P）中发送多个主信标，其对应于天线扇区（10-40）并且具有相关联的辅信标时隙（1s-4s）。在与对应于第一扇区的第一主信标时隙（4P）相关联的第一辅信标时隙（4sA）中从无线设备接收辅信标，辅信标响应于包括在第一信标中的第一主信标主信标时隙。与第一主信标时隙相关联地附加附加的第一辅助信标时隙（4s）。附加的第一辅助信标时隙使得第一扇区中的附加无线设备响应于包括在第一主信标时隙中的后续的第一主信标来发送附加的辅助信标。

7. 发明申请

US20110044224A1 METHOD AND SYSTEM OF BEACON TRANSMISSION AND RECEPTION USING DIRECTIONAL ANTENNAS 有权
标题翻译：使用方向天线的信标传输和接收的方法和系统
公开(公告)号：US20110044224A1
公开(公告)日：2011-02-24
申请号：US12517872
申请日：2007-12-12
申请人： Chun-Ting Chou , Richard Chen , Seyed-Alireza Seyedi-Esfahani
发明人： Chun-Ting Chou , Richard Chen , Seyed-Alireza Seyedi-Esfahani
IPC分类号： H04W4/06
CPC分类号： H04W16/28 , H04W48/08 , H04W48/16 , H04W74/04
摘要： A system for broadcasting and receiving a beacon signal includes a beacon transmitter (310, 400) and a beacon receiver (320, 500). The beacon transmitter includes a beacon signal generator (410) to generate a beacon signal, and a directional antenna system (420) to selectively transmit the beacon signal in a corresponding one of M different directions during each one of M beacon slots (342) during a beacon period (340) in each of a plurality of superframes (330). The beacon receiver includes a beacon signal detector (510) to receive and detect the beacon signal, and a directional antenna system (520) having an antenna pattern including a main lobe and being adapted to selectively steer the main lobe in a selected one of N different directions during each of a plurality of receiver frames each having a time period substantially equal to a time period of one of the superframes.
摘要翻译：用于广播和接收信标信号的系统包括信标发射机（310,400）和信标接收机（320,500）。信标发射机包括用于生成信标信号的信标信号发生器（410）和定向天线系统（420），用于在M个信标时隙（342）的每一个期间在M个不同方向中的相应一个中选择性地发送信标信号在多个超帧（330）中的每一个中的信标周期（340）。信标接收机包括用于接收和检测信标信号的信标信号检测器（510），以及定向天线系统（520），其具有包括主瓣的天线方向图，并且适于选择性地转向所选择的N中的主波瓣在多个接收机帧中的每一个中，每个具有基本上等于超帧之一的时间段的时间周期的不同方向。

8. 发明申请

US20100272203A1 SINGLE-CARRIER BLOCK TRANSMISSION WITH TRELLIS CODED MODULATION (TCM), MULTI-LEVEL CODED MODULATION (MLCM) AND BIT-INTERLEAVED MLCM (BIMLCM) 失效
标题翻译：具有TRLLIS编码调制（TCM），多级编码调制（MLCM）和位交互MLCM（BIMLCM）的单载波块传输
公开(公告)号：US20100272203A1
公开(公告)日：2010-10-28
申请号：US12447491
申请日：2007-10-25
申请人： Seyed-Alireza Seyedi-Esfahani , Dagnachew Birru
发明人： Seyed-Alireza Seyedi-Esfahani , Dagnachew Birru
IPC分类号： H04L5/12 , H04L27/00
CPC分类号： H04L1/0041 , H04L1/0054 , H04L1/006 , H04L1/0071 , H04L25/03159 , H04L25/03203 , H04L27/186 , H04L27/3416
摘要： The system (900), transmitter (700), receiver (800.a 800.b), and method of the present invention provide a technique to code data bits into symbols using TCM, MLCM or BIMLCM before the symbols are placed in an SCBT block. Generally, TCM, MLCM, and BIMLCM do not have good performance over the frequency selective channels. However, since the frequency domain equalization of SCBT will flatten the channel, the use of TCM, MLCM and BIMLCM can provide significant gain. Furthermore, since some of the bits are left uncoded, the speed requirements on the encoder and decoder can be relaxed. This feature is especially important for the very high data rate systems.
摘要翻译：本发明的系统（900），发射机（700），接收机（800.a800.b）和方法提供了一种技术，在将符号放置在SCBT中之前，使用TCM，MLCM或BIMLCM将数据比特编码成符号块。通常，TCM，MLCM和BIMLCM在频率选择性通道上的性能不佳。然而，由于SCBT的频域均衡将使通道平坦化，所以使用TCM，MLCM和BIMLCM可以提供显着的增益。此外，由于某些位未编码，可以放宽对编码器和解码器的速度要求。该特性对于非常高的数据速率系统尤为重要。

9. 发明申请

US20100040084A1 SYSTEM AND METHOD FOR EFFICIENT TRANSMISSION OF MULTIMEDIA AND DATA 有权
标题翻译：用于有效传输多媒体和数据的系统和方法
公开(公告)号：US20100040084A1
公开(公告)日：2010-02-18
申请号：US12522940
申请日：2008-01-16
申请人： Seyed-Alireza Seyedi-Esfahani , Dagnachew Birru
发明人： Seyed-Alireza Seyedi-Esfahani , Dagnachew Birru
IPC分类号： H04J3/24
CPC分类号： H04L1/0089 , H04L1/0041 , H04L1/0061 , H04L1/007 , H04L1/0075 , H04L2001/0098
摘要： A system and method for efficient transmission of different types of source data in the same packet, hence, enabling efficient transmission of multimedia and data content with unequal error protection are provided. The present disclosure defines a packet structure where the packet consists of a number of segments or payloads. The packet includes a field indicative of a number of payloads included in the packet; and at least one data field for each payload in the packet, the at least one data field defining at least one characteristic of the payload. The at least one data field includes a length of the payload, modulation and coding scheme, existence of a frame check sum (FCS), and existence of a midamble. The at least one data field may further include a continuation element indicative of whether two consecutive payloads are portions of a same data frame.
摘要翻译：提供了用于在相同分组中有效地传输不同类型的源数据的系统和方法，因此，提供了具有不等错误保护的多媒体和数据内容的有效传输。本公开定义了分组结构，其中分组由多个分段或有效载荷组成。分组包括指示分组中包括的有效载荷数量的字段; 以及用于分组中的每个有效载荷的至少一个数据字段，所述至少一个数据字段定义所述有效载荷的至少一个特性。所述至少一个数据字段包括有效负载的长度，调制和编码方案，帧校验和（FCS）的存在以及中间码的存在。所述至少一个数据字段还可以包括指示两个连续有效负载是相同数据帧的部分的继续元素。

10. 发明授权

US09577863B2 System and method for improved frequency/phase error tracking in high-speed high-frequency communication 有权
标题翻译：在高速高频通信中改进频率/相位误差跟踪的系统和方法
公开(公告)号：US09577863B2
公开(公告)日：2017-02-21
申请号：US12522932
申请日：2008-01-15
申请人： Dagnachew Birru , Seyed-Alireza Seyedi-Esfahani
发明人： Dagnachew Birru , Seyed-Alireza Seyedi-Esfahani
IPC分类号： H04B1/38 , H04N7/167 , H04L27/26 , H04B1/62 , H04L5/00
CPC分类号： H04L27/2657 , H04B1/62 , H04L5/0007 , H04L5/0048 , H04L27/2607 , H04L27/2692
摘要： A single carrier modulation scheme suitable for use in high frequency communication systems is provided that achieves improved residual frequency error and phase noise estimation. At a transmitter, cyclically orthogonal constant amplitude pilot signals are inserted at the beginning (or end) of a plurality of SCBT blocks of a block coded data stream. At a receiver, a phase rotation of the received data stream is determined to remove a residual frequency error or to estimate the phase noise.
摘要翻译：提供了适用于高频通信系统的单载波调制方案，其实现了改进的残余频率误差和相位噪声估计。在发射机处，在块编码数据流的多个SCBT块的开始（或结束）处插入循环正交的恒定幅度导频信号。在接收机处，确定接收数据流的相位旋转以消除残余频率误差或估计相位噪声。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式