公开(公告)号：WO2005055505A3

公开(公告)日：2005-08-11

申请号：PCT/US2004037732

申请日：2004-11-10

Applicant: INTEL CORP ,  JACOBSEN ERIC ,  SADOWSKY JOHN

Inventor： JACOBSEN ERIC ,  SADOWSKY JOHN

IPC: H04L1/00 ,  H04L1/18 ,  H04L27/26

CPC classification number: H04L1/005 ,  H04L1/0041 ,  H04L1/0057 ,  H04L27/2602

Abstract: Methods, apparatus and systems are disclosed for block encoding/decoding information wireless networks having narrow decoding latency restrictions. A method includes identifying a length of information to be sent in a block code and encoding the information to be sent in the block code into one or more codewords, where the number of codewords and the amount of information encoded within each codeword is adjusted based on the identified length and to achieve a similar codeword error probability for each codeword considering available decoding time for decoding a last codeword is less than available decoding time for decoding a first codeword. In certain implementations low density parity check (LDPC) encoding may be used in combination with OFDM to provide reliable communications in a high throughput WLAN.

Abstract translation: 公开了具有窄解码延迟限制的块编码/解码信息无线网络的方法，设备和系统。 一种方法包括：识别要在分组码中发送的信息的长度，并且将要在分组码中发送的信息编码成一个或多个码字，其中，码字的数量和在每个码字内编码的信息的量基于 考虑用于解码最后一个码字的可用解码时间的每个码字，所识别的长度并且实现类似的码字错误概率小于用于解码第一码字的可用解码时间。 在某些实现中，低密度奇偶校验（LDPC）编码可以与OFDM结合使用以在高吞吐量WLAN中提供可靠的通信。

公开(公告)号：GB2381724A

公开(公告)日：2003-05-07

申请号：GB0303959

申请日：2001-09-26

Applicant: INTEL CORP

Inventor： SADOWSKY JOHN

IPC: G06F11/10 ,  G06F9/38 ,  H03M13/25 ,  H03M13/29 ,  H03M13/39 ,  H03M13/41 ,  H04L1/00

Abstract: A system and method for decoding a channel bit stream efficiently performs trellis-based operations. The system includes a butterfly coprocessor and a digital signal processor. For trellis-based encoders, the system decodes a channel bit stream by performing operations in parallel in the butterfly coprocessor, at the direction of the digital signal processor. The operations are used in implementing the MAP algorithm, the Viterbi algorithm, and other soft- or hard-output encoding algorithms. The DSP may perform memory management and algorithmic scheduling on behalf of the butterfly coprocessor. The butterfly coprocessor may perform parallel butterfly operations for increased throughput. The system maintains flexibility, for use in a number of possible decoding environments.

公开(公告)号：ES2366519T3

公开(公告)日：2011-10-21

申请号：ES09000404

申请日：2005-01-11

Applicant: INTEL CORP

Inventor： STEPHENS ADRIAN ,  SADOWSKY JOHN

IPC: H04L27/20 ,  H03M13/00 ,  H04W28/04 ,  H04W84/12

Abstract: Un procedimiento para que un dispositivo reciba transmisiones por un medio inalámbrico, comprendiendo el procedimiento: recibir una señal que incluye una unidad de datos del protocolo del procedimiento protocolar de convergencia de la capa física, PLCP (PPDU) (110, 120), por un canal de comunicación inalámbrica, incluyendo la PPDU un preámbulo con un campo L-SIG (114) de señalización de sistema legado, modulado con modulación de desplazamiento de fase binaria, BPSK; caracterizado por: determinar que un campo HT-SIG (122) de señalización de alto caudal está presente en una porción de la PPDU inmediatamente a continuación del campo L-SIG cuando la porción está modulada con modulación de desplazamiento de fase binaria cuaternaria, QBPSK.

公开(公告)号：GB2433182B

公开(公告)日：2009-06-03

申请号：GB0703502

申请日：2005-09-01

Applicant: INTEL CORP

Inventor： SADOWSKY JOHN ,  NAKAMURA IKUO ,  NICHOLSON ANA MARIA

IPC: H04B7/04

Abstract: In a communication system using closed loop multiple input multiple output (MIMO), beam forming information may be fed back from a receiver to a transmitter sequentially over a number of frames. The beam forming matrices that are fed back may be quantized.

公开(公告)号：WO2005022681A3

公开(公告)日：2005-07-21

申请号：PCT/US2004025509

申请日：2004-08-06

Applicant: INTEL CORP

Inventor： SADOWSKY JOHN ,  HO MINNIE ,  SANDHU SUMEET ,  MALTSEV ALEXANDER ,  JACOBSEN ERIC ,  SADRI ALI

IPC: H04B7/04 ,  H04L1/06 ,  H04L27/26 ,  H04W16/28 ,  H04W74/02

CPC classification number: H04W16/28 ,  H04B7/0408 ,  H04L27/2602 ,  H04W74/02

Abstract: In an orthogonal frequency division multiplexed (OFDM) system, a transmitter and/or receiver communicate separate data streams on non-orthogonal spatial channels., Each spatial channel may use the same set of OFDM subcarriers and may take advantage of the multipath characteristics of the spatial channel allowing the communication of additional data without an increase in frequency bandwidth. Space-frequency subcarrier modulation assignments may be dynamically assigned on a per subcarrier basis as well as a per spatial channel basis to help maximize the data-carrying capacity of the channel. In some embodiments, each of the spatial channels may be associated with one of a plurality of spatially diverse antennas. In other embodiments, beamforming may be performed to allow the transmission and/or reception of signals within the spatial channels.

Abstract translation: 在正交频分复用（OFDM）系统中，发射机和/或接收机在非正交空间信道上传送单独的数据流，每个空间信道可以使用相同的OFDM子载波集合，并且可以利用 空间信道允许附加数据的通信，而不增加频率带宽。 可以在每个子载波基础上以及每个空间信道基础上动态分配空频子载波调制分配，以帮助最大化信道的数据承载能力。 在一些实施例中，每个空间信道可以与多个空间多样的天线中的一个相关联。 在其他实施例中，可以执行波束成形以允许空间信道内的信号的发送和/或接收。

公开(公告)号：WO0229977A3

公开(公告)日：2002-06-13

申请号：PCT/US0130355

申请日：2001-09-26

Applicant: INTEL CORP ,  SADOWSKY JOHN

Inventor： SADOWSKY JOHN

IPC: G06F11/10 ,  G06F9/38 ,  H03M13/25 ,  H03M13/29 ,  H03M13/39 ,  H03M13/41 ,  H04L1/00

CPC classification number: H03M13/3922 ,  H03M13/2957 ,  H03M13/3905 ,  H03M13/3927 ,  H03M13/3961 ,  H03M13/41 ,  H03M13/4107 ,  H03M13/6502 ,  H03M13/6569

Abstract: A system and method for decoding a channel bit stream efficiently performs trellis-based operations. The system includes a butterfly coprocessor and a digital signal processor. For trellis-based encoders, the system decodes a channel bit stream by performing operations in parallel in the butterfly coprocessor, at the direction of the digital signal processor. The operations are used in implementing the MAP algorithm, the Viterbi algorithm, and other soft- or hard-output encoding algorithms. The DSP may perform memory management and algorithmic scheduling on behalf of the butterfly coprocessor. The butterfly coprocessor may perform parallel butterfly operations for increased throughput. The system maintains flexibility, for use in a number of possible decoding environments.

Abstract translation: 用于解码信道比特流的系统和方法有效地执行基于网格的操作。 该系统包括一个蝶形协处理器和一个数字信号处理器。 对于基于网格的编码器，系统通过在蝶形协处理器中并行执行操作，在数字信号处理器的指导下解码通道比特流。 这些操作用于实现MAP算法，维特比算法和其他软或硬输出编码算法。 DSP可以代表蝶形协处理器执行存储器管理和算法调度。 蝶形协处理器可以执行并行蝶形运算以提高吞吐量。 该系统保持灵活性，可用于多种可能的解码环境。

公开(公告)号：DE602005027336D1

公开(公告)日：2011-05-19

申请号：DE602005027336

申请日：2005-03-22

Applicant: INTEL CORP

Inventor： BASSON GAL ,  MYSZNE JORGE ,  FINKELSTEIN YUVAL ,  WAXMAN SHAI ,  KASHER ASSAF ,  SADOWSKY JOHN

IPC: H04L1/04

公开(公告)号：DK1712043T3

公开(公告)日：2009-06-29

申请号：DK05705413

申请日：2005-01-11

Applicant: INTEL CORP

Inventor： STEPHENS ADRIAN ,  SADOWSKY JOHN

IPC: H04L12/28

Abstract: Methods and systems for communicating in a wireless network may distinguish different types of packet structures by modifying the modulation technique for portions of a data unit. Receiving devices may identify the type of packet structure associated with a transmission by the modulation technique used for a portion of the data unit following a legacy signalling field.

公开(公告)号：DE112005002392B4

公开(公告)日：2016-03-10

申请号：DE112005002392

申请日：2005-09-01

Applicant: INTEL CORP

Inventor： SADOWSKY JOHN

IPC: H04B7/06 ,  H04L29/06

Abstract: Verfahren, welches umfaßt: Empfangen eines Signals Yi aus einem MIMO-Kanal, wobei das Signal Yi einem Vektor von Datensymbolen Xi enthält, der mit einer Strahlbildungsmatrix Vi in einem entfernten Sender vor Übertragung in den MIMO-Kanal Matrix-multipliziert wurden, wobei der MIMO-Kanal eine Kanalmatrix Hi aufweist; Verwenden des Signals Yi zum Bestimmen eines kombinierten Kanals H~ i, der Effekte sowohl der Strahlbildungsmatrix Vi als auch der Kanalmatrix Hi enthält; Durchführen einer Singulärwertzerlegung (SVD) des kombinierten Kanals H~ i zum Bestimmen einer Strahlbildungsmatrix V~ i, die eine Korrektur darstellt, die für die Strahlbildungsmatrix Vi benötigt wird; und Übertragen der Strahlbildungsmatrix V~ i an den entfernten Sender, um mit der Strahlbildungsmatrix Vi zum Erzeugen einer neuen Strahlbildungsmatrix Vi+1 zur Verwendung in einer nachfolgenden Datenübertragung von dem entfernten Sender kombiniert zu werden.

公开(公告)号：DK2056637T3

公开(公告)日：2011-07-04

申请号：DK09000404

申请日：2005-01-11

Applicant: INTEL CORP

Inventor： STEPHENS ADRIAN ,  SADOWSKY JOHN

IPC: H04L27/20 ,  H04L12/28