公开(公告)号：UA96189C2

公开(公告)日：2011-10-10

申请号：UAA200912013

申请日：2008-04-25

Applicant: QUALCOMM INC

Inventor： KIM BYOUNG-HOON ,  YOO TAESANG ,  ZHANG XIAOXIA

IPC: H04B7/06 ,  H04B7/04

Abstract: Описанысистемыи способы, которыеоблегчаютприменениеразнесенияс циклическойзадержкой (CDD) ипредварительногокодированиядобеспроводныхпередач. Вчастности, векторыданных, которыедолжныбытьпереданымножествуприемныхантеннприемника, могутбытьпреобразованыв областьвиртуальнойантенны. CDD можетбытьпримененок этойобластис дальнейшимпредварительнымкодированием, чтобыобеспечитьпреимуществапримененияпредварительногокодирования, хотяприменяется CDD. Относительноэтого, результирующиесигналымогутбытьпереданыбезнапрасногорассеянияэнергиипередачив пространстве, котороенедостижимоприемнымиустройствами.

公开(公告)号：AU2008213683B2

公开(公告)日：2011-02-17

申请号：AU2008213683

申请日：2008-02-06

Applicant: QUALCOMM INC

Inventor： KIM BYOUNG-HOON ,  ZHANG XIAOXIA ,  MALLADI DURGA PRASAD

Abstract: Techniques for transmitting data using a combination of explicit cyclic delay and implicit cyclic delay are described. A transmitter may perform fir=t processing for cyclic delay diversity (or explicit cyclic delay processing) based on a first set of cyclic delay values known to a receiver. The transmitter may perform precoding based on a precoding matrix either before or after the explicit cyclic delay processing. The transmitter may perform second processing for cyclic delay diversity (or implicit cyclic delay processing) based on a.second set of cyclic delay values unknown to the receiver. The transmitter may perform both explicit and implicit cyclic delay processing for data and may perform only implicit cyclic delay processing for pilot. One entity may. select the first set of cyclic delay values and inform the other entity. The transmitter may autonomously (e.g. pseudo-randomly) select the second set of cyclic delay, values without informing the receiver.

公开(公告)号：AU2008212793B2

公开(公告)日：2011-02-17

申请号：AU2008212793

申请日：2008-02-08

Applicant: QUALCOMM INC

Inventor： MALLADI DURGA PRASAD ,  KIM BYOUNG-HOON ,  DOAN DUNG N

IPC: H04W28/18

Abstract: Systems, methodologies, and devices are described that can facilitate bandwidth efficient non-coherent signaling for uplink control channel transmissions. A communication device (e.g., a mobile device, base station) can be configured to utilize or generate a set of complex orthogonal codewords to facilitate transmission of control channel information using non-coherent signaling in a bandwidth efficient manner. A complex orthogonal codeword set can comprise a first subset of codewords where such codewords have a desirable cross-correlation property and another subset(s) of codewords that can include expurgated codewords, where the expurgated codewords can include discarded codewords and/or codeword pairs that produce a worst-case cross-correlation property. The codeword set and subsets are determined based at least in part on a predefined codeword criterion. A portion of the discarded codewords can be used for other purposes, such as erasure decoding, interference-level estimation, and/or multi-mode control channel operation.

公开(公告)号：AU2007316403B2

公开(公告)日：2011-02-03

申请号：AU2007316403

申请日：2007-11-06

Applicant: QUALCOMM INC

Inventor： YOO TAESANG ,  MALLADI DURGA PRASAD ,  KIM BYOUNG-HOON

IPC: H04B7/06 ,  H04B7/04 ,  H04L1/00 ,  H04L1/06

Abstract: Techniques for supporting MIMO transmission with layer permutation are described. In one aspect, a base channel quality indicator (CQI) and a delta CQI for a multiple-input multiple-output (MIMO) transmission comprising multiple codewords are determined; and the base CQI and the delta CQI are sent as feedback information for the MIMO transmission.

公开(公告)号：ES2350848T3

公开(公告)日：2011-01-27

申请号：ES05791647

申请日：2005-08-26

Applicant: QUALCOMM INC

Inventor： KIM BYOUNG-HOON

IPC: H04L25/03 ,  H04B7/06 ,  H04L1/06

Abstract: Un aparato para un sistema de comunicación de múltiples flujos, de múltiples entradasmúltiples salidas, denominado MIMO, que comprende: un codificador (108) para codificar una pluralidad de flujos (106) de bits fuente para producir una pluralidad de flujos de bits codificados, un procesador de flujos de bits para encriptar cada uno de dichos flujos de bits codificados con un encriptador (114) configurado de diferente manera para producir una pluralidad de flujos de bits encriptados de diferente manera, y un mapeador (116) para mapear grupos de bits de dicha pluralidad de flujos de bits encriptados de diferente manera en símbolos de transmisión, en el que el procesador de flujos de bits comprende además un adaptador (110) de tasa de transmisión para adaptar la tasa de transmisión de los flujos de bits codificados.

公开(公告)号：AU2007272600B2

公开(公告)日：2010-12-09

申请号：AU2007272600

申请日：2007-07-10

Applicant: QUALCOMM INC

Inventor： KIM BYOUNG-HOON ,  MALLADI DURGA PRASAD

IPC: H04B7/26

Abstract: Facilitating frequency hopping for single carrier, frequency division multiple access (SC-FDMA) transmission is described herein. By way of example, user data transmitted within a transmission allocation unit can be frequency shifted with respect to time based slots of the allocation unit. As a result, frequency hopping can be accomplished while preserving single carrier constraints and a low peak to average power ratio (PAPR). Furthermore, various frequency shifted mechanisms are disclosed to accomplish preservation of single carrier restraints. For example, a scheduler can select between cyclic frequency shifting, transposed frequency shifting, and multiplexing of frequency selective scheduled and frequency hopped data based on an audit of scheduled data for the transmission allocation unit. As a result, the reduction in interference achieved through frequency hopping can be combined with the low PAPR for various data allocation configurations.

公开(公告)号：AU2006222959C1

公开(公告)日：2010-11-18

申请号：AU2006222959

申请日：2006-03-13

Applicant: QUALCOMM INC

Inventor： KIM BYOUNG-HOON

IPC: H04L1/00 ,  H04J99/00 ,  H04L1/20

Abstract: Systems and methods for improving the performance of a MIMO wireless communication system by reducing the amount of uplink resources that are needed to provide channel performance feedback for the adjustment of data rates on the downlink MIMO channels. In one embodiment, a method comprises encoding each of a set of data streams according to corresponding data rates, permuting the data streams on a set of MIMO channels according to a full permutation of combinations, transmitting the permuted data streams, receiving the permuted data streams, decoding and determining an SNR for each of the data streams, computing a condensed SNR metric for the set of data streams, providing the condensed metric as feedback, determining a set of individual SNR metrics for the data streams based on the condensed SNR metric, and adjusting the data rates at which the data streams are encoded based on the individual SNR metrics.

公开(公告)号：NZ561391A

公开(公告)日：2010-09-30

申请号：NZ56139106

申请日：2006-03-13

Applicant: QUALCOMM INC

Inventor： KIM BYOUNG-HOON

IPC: H04L1/00 ,  H04J99/00 ,  H04L1/20

Abstract: A method implemented in a multiple-input, multiple-output (MIMO) wireless communication system is disclosed. The method comprises transmitting each of a plurality of data streams from a first station to a second station in a permuted fashion over a plurality of MIMO channels; inversely permuting the data streams at the second station; determining a quality metric for each of the data streams at the second station; determining a condensed quality metric at the second station based on the quality metrics for each of the data streams; and transmitting the condensed quality metric from the second station to the first station. The transmitting the data streams in a permuted fashion comprises mixing the data streams on the MIMO channels in a pseudorandom pattern that comprises a full permutation of possible combinations of the data streams and the MIMO channels. Also disclosed is a method for multiple-input, multiple-output (MIMO) wireless communication. This method comprises encoding each of a plurality of data streams according to corresponding data rates; transmitting the data streams in a permuted fashion over a plurality of MIMO channels from a first station to a second station as described above; receiving a condensed quality metric; and adjusting the data rates at which the data streams are encoded based on the condensed quality metric. Further disclosed is a method for multiple-input, multiple-output (MIMO) wireless communication. The method comprises receiving a plurality of permuted data streams over a plurality of MIMO channels, inversely permuting the data streams; determining a quality metric for each of the data streams; determining a condensed quality metric based on the quality metrics for each of the data streams; and transmitting the condensed quality metric to a base station. The data streams are permuted by mixing the data streams on the MIMO channels in a pseudorandom pattern that comprises a full permutation of possible combinations of the data streams and the MIMO channels. A base station, mobile station and the multiple-input, multiple-output (MIMO) wireless communication system are also disclosed.

公开(公告)号：MX2010001793A

公开(公告)日：2010-03-15

申请号：MX2010001793

申请日：2008-08-15

Applicant: QUALCOMM INC

Inventor： SARKAR SANDIP ,  MONTOJO JUAN ,  MALLADI DURGA PRASAD ,  KIM BYOUNG-HOON

IPC: H04B7/04

Abstract: Se describen técnicas para enviar transmisiones de múltiple entrada múltiple salida (MIMO) en sistema de comunicación inalámbrica. En un diseño, un transmisor envía una primera señal de referencia mediante un primer enlace, por ejemplo, una señal de referencia de celda específica mediante el enlace descendente. El transmisor recibe la información de indicador de calidad de canal (CQI) determinada por un receptor basándose en la primera señal de referencia. El transmisor también recibe una segunda señal de referencia desde el receptor mediante un segundo enlace, por ejemplo, una señal de referencia sonora mediante el enlace ascendente. El transmisor obtiene por lo menos una matriz de canal de MIMO para el primer enlace basándose en la segunda señal de referencia. El transmisor determina por lo menos una matriz de precodificación basándose por lo menos en una matriz de canal de MIMO, por ejemplo, de acuerdo con la formación característica de haces ideal o la formación característica de pseudo-haces. El transmisor entonces envía una transmisión de datos al receptor basándose por lo menos en una matriz de precodificación y la información de CQI.

公开(公告)号：HK1132598A1

公开(公告)日：2010-02-26

申请号：HK10100107

申请日：2010-01-07

Applicant: QUALCOMM INC

Inventor： XU HAO ,  MALLADI DURGA ,  KIM BYOUNG-HOON

IPC: H04L20060101

Abstract: Systems and methodologies are described that facilitate switching between various combinations of MIMO, SIMO, SISO and OFDM, LFDM and IFDM. According to various aspects, a method for a wireless communication network is provided that includes: receiving a first set of data information, wherein the first set of information comprising a first value, determining if the first value is above a threshold and transmitting an indication to switch to using a first transmission technique if determined that the first value is above the threshold.