公开(公告)号：US08144797B2

公开(公告)日：2012-03-27

申请号：US12249739

申请日：2008-10-10

Applicant: Syed Aon Mujtaba ,  Xiaowen Wang

Inventor： Syed Aon Mujtaba ,  Xiaowen Wang

IPC: H04B7/02

CPC classification number: H04B7/0417 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/068 ,  H04B7/0689 ,  H04L1/0016

Abstract: A Channel Quality Indicator table for wireless multiple input multiple output (MIMO) networks is disclosed. In one embodiment, a method of generating a table for channel quality indicator (CQI) for an open loop MIMO transmission includes calculating performance of a link between a transmitter and a user end unit for each MIMO transmission mode over a range of average signal-to-noise ratio, and selecting the MIMO transmission mode that maximizes performance for each subset of the range of average signal-to-noise ratio. The method further includes storing the selected MIMO transmission mode and the corresponding subset of the range of average signal-to-noise ratio in a CQI table, the CQI table being stored in an user end unit and a base transceiver station of the open loop MIMO network.

Abstract translation: 公开了一种用于无线多输入多输出（MIMO）网络的信道质量指标表。 在一个实施例中，生成用于开环MIMO传输的信道质量指示符（CQI）的表的方法包括：在平均信号到平均信号的范围内，针对每个MIMO传输模式来计算发射机和用户端单元之间的链路的性能 并且选择使平均信噪比范围的每个子集的性能最大化的MIMO传输模式。 该方法还包括将所选择的MIMO传输模式和平均信噪比范围的相应子集存储在CQI表中，该CQI表被存储在开环MIMO的用户端单元和基站中 网络。

公开(公告)号：US07558328B2

公开(公告)日：2009-07-07

申请号：US11223757

申请日：2005-09-09

Applicant: Syed Aon Mujtaba

Inventor： Syed Aon Mujtaba

IPC: H04L27/28 ,  H04B7/02

CPC classification number: H04B7/0669 ,  H04B7/0684 ,  H04B7/10 ,  H04L5/023 ,  H04L27/2602 ,  H04W48/08 ,  H04W48/16 ,  H04W84/12

Abstract: Methods and apparatus are provided for increasing data throughput in a multiple antenna communication system using additional subcarriers. The multiple antenna communication system includes at least one legacy system employing an N1 point fast Fourier transform (FFT) within a bandwidth, BW1. Data is transmitted using an N2 point inverse FFT within the bandwidth, BW1, wherein N2 is greater than N1; and subcarriers associated with the N2 point inverse FFT are employed to transmit the data. Data can also be transmitted using an N2 point inverse FFT within a bandwidth, BW2, wherein N2 is greater than N1 and the bandwidth, BW2, is greater than the bandwidth, BW1; and subcarriers associated with the N2 point inverse FFT are employed to transmit the data, wherein the employed subcarriers includes one or more additional subcarriers at outer edges of the bandwidth, BW1, relative to the legacy system and one or more additional subcarriers near DC relative to the legacy system.

Abstract translation: 提供了用于增加使用附加子载波的多天线通信系统中的数据吞吐量的方法和装置。 多天线通信系统包括在带宽BW1内采用N1点快速傅里叶变换（FFT）的至少一个遗留系统。 数据使用带宽BW1内的N2点逆FFT传输，其中N2大于N1; 并且采用与N2点逆FFT相关联的子载波来发送数据。 数据也可以使用带宽BW2内的N2点逆FFT传输，其中N2大于N1，带宽BW2大于带宽BW1; 并且采用与N2点逆FFT相关联的子载波来发送数据，其中所采用的子载波相对于传统系统在带宽的外边缘BW1处包括一个或多个附加子载波，以及相对于相对于传统系统的DC附近的一个或多个附加子载波 遗留系统。

公开(公告)号：US07526705B2

公开(公告)日：2009-04-28

申请号：US11121191

申请日：2005-05-03

Applicant: Jan Boer ,  Wilhelmus Diepstraten ,  Joachim S. Hammerschmidt ,  Syed Aon Mujtaba

Inventor： Jan Boer ,  Wilhelmus Diepstraten ,  Joachim S. Hammerschmidt ,  Syed Aon Mujtaba

IPC: H04L1/18 ,  H03M13/00

CPC classification number: H04L1/1829

Abstract: A method for processing a received encoded data unit comprises: decoding the received encoded data unit; determining whether the encoded data unit has been correctly received; prior to completing the determination of whether the encoded data unit has been correctly received, initiating the transmission of an acknowledgment message; and modifying the transmission of the acknowledgment message if it is determined that the data unit has not been correctly received. In another embodiment, a station for a communications network comprises: a decoder adapted to decode a received encoded data unit; a check processor adapted to determine whether the encoded data unit has been correctly received; and a transmitter adapted to initiate the transmission of an acknowledgment message prior to the check processor completing the determination whether the encoded data unit has been correctly received. The transmitter is adapted to modify the transmission of the acknowledgment message if the check processor determines that the data unit has not been correctly received.

Abstract translation: 一种用于处理接收的编码数据单元的方法包括：对所接收的编码数据单元进行解码; 确定编码数据单元是否已被正确接收; 在完成编码数据单元是否已被正确接收的确定之前，发起确认消息的发送; 以及如果确定所述数据单元未被正确接收，则修改所述确认消息的传输。 在另一个实施例中，用于通信网络的站包括：适于对接收的编码数据单元进行解码的解码器; 校验处理器，用于确定编码数据单元是否已被正确接收; 以及发射机，其适于在所述检查处理器完成所述编码数据单元是否已被正确接收到的确定之前发起确认消息的传输。 如果检查处理器确定数据单元未被正确接收，则发射机适于修改确认消息的传输。

公开(公告)号：US07477633B2

公开(公告)日：2009-01-13

申请号：US11223775

申请日：2005-09-09

Applicant: Syed Aon Mujtaba

Inventor： Syed Aon Mujtaba

IPC: H04M3/20

CPC classification number: H04B7/0669 ,  H04B7/0684 ,  H04B7/10 ,  H04L5/023 ,  H04L27/2602 ,  H04W48/08 ,  H04W48/16 ,  H04W84/12

Abstract: Methods and apparatus are provided for varying the number of pilot tones in a multiple antenna communication system. Data is transmitted in a multiple antenna communication system by selecting a number of pilot tones to be employed to transmit the data; and transmitting an indication of the selected number of pilot tones in a preamble of a packet containing the data. Data is received in a multiple antenna communication system by receiving a preamble having an indication of a number of pilot tones embedded in the data; and processing the received data based on the indicated number of pilot tones. The indication of the selected number of pilot tones can be transmitted, for example, in a SIGNAL field of an exemplary IEEE 802.11 preamble. The number of pilot tones can be selected, for example, based on one or more of (i) a delay spread of a channel; (ii) the SNR at the receiver; or (iii) a number of antennas at a receiver.

Abstract translation: 提供了用于改变多天线通信系统中的导频音的数量的方法和装置。 数据在多天线通信系统中通过选择要用于发送数据的导频音调的数量来发送; 以及在包含数据的分组的前导码中发送所选择的导频音调数的指示。 数据在多天线通信系统中通过接收具有嵌入数据中的导频音的数量的指示的前导码而被接收; 以及基于所指示的导频音的数量来处理接收到的数据。 可以例如在示例性IEEE 802.11前导码的信号字段中发送所选择的导频音的数量的指示。 可以例如基于（i）信道的延迟扩展中的一个或多个来选择导频音的数量; （ii）接收机的SNR; 或（iii）在接收机处的多个天线。

公开(公告)号：US20080232239A1

公开(公告)日：2008-09-25

申请号：US11572450

申请日：2005-09-09

Applicant: Syed Aon Mujtaba ,  Xiaowen Wang

Inventor： Syed Aon Mujtaba ,  Xiaowen Wang

IPC: H04J11/00

CPC classification number: H04B7/0669 ,  H04B7/0684 ,  H04B7/10 ,  H04L5/023 ,  H04L27/2602 ,  H04W48/08 ,  H04W48/16 ,  H04W84/12

Abstract: Methods and apparatus are provided for communicating pseudo-orthogonal pilot tones in a multiple antenna communication system. Data is transmitted in a multiple antenna communication system having N transmit antennas by generating a number of pilot tones for each of the N transmit antennas, wherein the pilot tones for each of the N transmit antennas are pseudo-orthogonal with each other; and transmitting the data on each of the N transmit antennas. The pilot tones are generally embedded in the data. Data is received in a multiple antenna communication system having N transmit antennas by receiving the data on each of the N transmit antennas, wherein the data includes a number of pilot tones for each of the N transmit antennas, wherein the pilot tones for each of the N transmit antennas are pseudo-orthogonal with each other. The pilot tones can be orthogonal in the frequency domain, time domain, spatial domain, or all of them.

Abstract translation: 提供了用于在多天线通信系统中传送伪正交导频音调的方法和装置。 通过为N个发送天线中的每一个生成多个导频音，在具有N个发送天线的多天线通信系统中发送数据，其中N个发射天线中的每一个的导频音调彼此伪正交; 并且在N个发射天线中的每一个上发送数据。 导频音通常嵌入在数据中。 在具有N个发射天线的多天线通信系统中，通过接收N个发射天线中的每一个上的数据来接收数据，其中数据包括用于N个发射天线中的每一个的导频音调，其中， N个发射天线彼此伪正交。 导频音可以在频域，时域，空域或全部正交。

公开(公告)号：US07020071B2

公开(公告)日：2006-03-28

申请号：US09200523

申请日：1998-11-25

Applicant: Syed Aon Mujtaba

Inventor： Syed Aon Mujtaba

IPC: H04J11/00 ,  H04J15/00 ,  H04Q7/00

CPC classification number: H04L5/023 ,  H04L5/143

Abstract: Methods and apparatus for wireless communication in systems such as omni-beam and narrow-beam fixed wireless loop (FWL) systems. In a first technique in accordance with the invention, referred to as code division duplex (CDD) time-slotted CDMA, uplink and downlink portions of the system are separated using code division duplexing, while the users within a given cell are also separated using codes, e.g., using time-slotted CDMA. In a second technique in accordance with the invention, referred to as time division duplex (TDD) time-slotted CDMA, uplink and downlink portions of the system are separated using time division duplexing, e.g., time slots, while the users in a given cell are separated using codes, e.g., time-slotted CDMA. Both the CDD and TDD techniques may make use of an electronically-steered beam which is designed to provide simultaneous coverage within a given cell for two or more users separated by codes. In a third technique in accordance with the invention, referred to as orthogonal frequency division multiplexing (OFDM), uplink and downlink portions of the system are separated in frequency, while the users are, e.g., also separated in frequency.

Abstract translation: 全方位和窄波束固定无线环路（FWL）系统中无线通信的方法和装置。 在根据本发明的第一技术中，被称为码分双工（CDD）时隙的CDMA，系统的上行链路和下行链路部分使用码分双工分离，而给定小区内的用户也使用代码分离 ，例如使用时隙CDMA。 在根据本发明的第二种技术中，称为时分双工（TDD）时隙CDMA，系统的上行链路和下行链路部分使用时分双工（例如，时隙）分离，而给定小区中的用户 使用代码分离，例如时隙CDMA。 CDD和TDD技术都可以利用电子控制的光束，其被设计为在由代码分隔的两个或多个用户的同一个小区内提供同时的覆盖。 在根据本发明的被称为正交频分复用（OFDM）的第三技术中，系统的上行链路和下行链路部分在频率上分离，而用户例如也在频率上分离。

公开(公告)号：US06721376B2

公开(公告)日：2004-04-13

申请号：US10213225

申请日：2002-08-06

Applicant: Thaddeus John Gabara ,  Syed Aon Mujtaba

Inventor： Thaddeus John Gabara ,  Syed Aon Mujtaba

IPC: H09B110

CPC classification number: H04L25/4904 ,  H04L5/02 ,  H04L25/4906

Abstract: Two or more digital signals are encoded using two or more respective line codes. The line codes are chosen in conjunction with the data rates of the digital signals such that the encoded signals are substantially orthogonal to each other in the frequency domain. As such, the two or more encoded signals may be combined and transmitted via a single physical medium with little or no interference. A transmitter for encoding and transmitting the digital signals contains line coders for encoding the digital signals and a combiner for combining the encoded signals for transmission via a single physical medium. A receiver for receiving and decoding the combined encoded signal contains filters for extracting the individual encoded signals and line decoders for decoding the individual encoded signals to generate the original digital data signals.

Abstract translation: 使用两个或多个相应的行代码对两个或多个数字信号进行编码。 结合数字信号的数据速率选择线路代码，使得编码信号在频域中基本上彼此正交。 这样，两个或多个编码信号可以通过具有很少或没有干扰的单个物理介质进行组合和发送。 用于编码和发送数字信号的发射机包含用于对数字信号进行编码的编码器和用于组合经编码的信号以进行经由单个物理介质传输的组合器。 用于接收和解码组合编码信号的接收器包含用于提取各编码信号和线解码器的滤波器，用于解码各编码信号以产生原始数字数据信号。