公开(公告)号：WO9925079A9

公开(公告)日：1999-08-26

申请号：PCT/US9823848

申请日：1998-11-10

Applicant: QUALCOMM INC

Inventor： ZEHAVI EPHRAIM ,  SKINNER GORDON DI

IPC: H04B1/7073 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/71 ,  H04B7/185 ,  H04B7/26 ,  H04Q7/28 ,  H04B1/707 ,  H04B7/216

CPC classification number: H04B1/70751 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/71 ,  H04B7/2628 ,  H04B2201/70702

Abstract: A system and method for rapidly acquiring timing of an access transmission that uses an access probe (500) that is transmitted in stages. A first stage (560) of the access probe preamble (520) is spread with a short pseudonoise (PN) code pair. A second stage (570) of the access probe preamble (520) is spread with both the short PN code pair and a long PN code. Transmitting the access probe (500) in stages (560, 570) reduces the number of hypotheses, and hence the time, required by a receiver attempting to acquire the access probe (500).

Abstract translation: 一种系统和方法，用于快速获取使用分阶段发送的接入探针（500）的接入传输的定时。 接入探测前导码（520）的第一阶段（560）用短伪噪声（PN）码对来扩展。 接入探测前导码（520）的第二级（570）用短PN码对和长PN码扩展。 以阶段（560,570）传输接入探针（500）减少了试图获取接入探测器（500）的接收器所需的假设的数量，并且因此减少了时间。

公开(公告)号：WO9819481A3

公开(公告)日：1998-09-03

申请号：PCT/US9719677

申请日：1997-10-27

Applicant: QUALCOMM INC

Inventor： ZEHAVI EPHRAIM

IPC: H04B7/26 ,  H04L1/00 ,  H04L29/08 ,  H04W24/00 ,  H04W28/18 ,  H04W28/22 ,  H04W72/04 ,  H04W72/08 ,  H04W84/04 ,  H04Q7/22

CPC classification number: H04W28/22 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0072 ,  H04W24/00 ,  H04W28/18 ,  H04W72/0473 ,  H04W72/08 ,  H04W84/042 ,  Y02D70/00

Abstract: A method of determining an information rate for a signal to be transmitted over the air from an infrastructure element to a remote unit in a wireless communication system, the signal including an information component and a channel encoding component, the method comprising: receiving from the remote unit, at the infrastructure element, information indicative of a quality measure of a wireless channel for communications between the infrastructure element and the remote unit; and selecting, at the infrastructure element, based on the received quality measure, a channel encoding rate at which to encode the signal for transmission during a particular time period.

Abstract translation: 一种在无线通信系统中确定要从基础设施元件发送到远程单元的空中信号的信息速率的方法，所述信号包括信息分量和信道编码分量，该方法包括：从远程接收 单元，在基础设施元件处，指示用于基础设施元件和远程单元之间的通信的无线信道的质量测量的信息; 以及在所述基础设施元件处，基于所接收的质量度量，在特定时间段期间选择用于对所述信号进行编码的信道编码速率进行传输。

公开(公告)号：WO9622661A2

公开(公告)日：1996-07-25

申请号：PCT/US9600141

申请日：1996-01-03

Applicant: QUALCOMM INC

Inventor： ZEHAVI EPHRAIM ,  CARTER STEPHEN S ,  GILHOUSEN KLEIN S

IPC: H04B1/04 ,  H04B1/7075 ,  H04B1/7085 ,  H04B1/7087 ,  H04B1/7117 ,  H04B7/216 ,  H04Q7/00

CPC classification number: H04B1/7085 ,  H04B1/70753 ,  H04B1/7087 ,  H04B1/7117 ,  H04B7/216

Abstract: Method and apparatus for tracking the frequency and phase of signals in spread spectrum communication systems that makes more efficient use of available carrier frequency and phase information by utilizing a substantial portion or all of the energy occupying the frequency spectrum of a received carrier signal, including energy from communication signals intended for other system users. Multiple spread spectrum communication signals (182) are input in parallel to data receivers (126 A'-N') where they are despread using preselected despreading codes at an adjustable phase angle and decoded over multiple orthogonal codes active within the communication system. Multiple decoded signals are then combined (188) to form a single phase detection signal which is used by at least one tracking loop (184) to track frequency and phase of the carrier signal for the received communication signals. The tracking loop (184) generates a timing signal which is used to adjust the phase angle (186) used during despreading. In further embodiments, the communication signals are despread using appropriate PN codes and separated into in-phase (I) and quadrature channels (Q) (214) where data symbols are processed by fast Hadamard transformers (218, 220) to generate corresponding data bits. The data is formed into pairwise products between the channels (224), and summed over multiple or all active subscriber orthogonal codes (226). This sum indicates a degree to which the estimated phase differs from the actual phase of received communication signals and is used to adjust the phase of application for the PN codes (230).

Abstract translation: 用于跟踪扩频通信系统中的信号的频率和相位的方法和装置，其通过利用占据所接收的载波信号的频谱（包括能量）的大部分或全部能量来更有效地利用可用的载波频率和相位信息 来自其他系统用户的通信信号。 多个扩频通信信号（182）并行地输入到数据接收器（126A'-N'），在数据接收器（126A'-N'）处，它们以可调节相位角的预选去扩展码进行解扩，并在通信系统内有效的多个正交码进行解码。 然后组合多个解码信号（188）以形成单相检测信号，该相位检测信号由至少一个跟踪环路（184）用于跟踪所接收的通信信号的载波信号的频率和相位。 跟踪环路（184）产生定时信号，该定时信号用于调整在解扩过程中使用的相位角（186）。 在另外的实施例中，使用合适的PN码对通信信号进行解扩，并将其分离成同相（I）和正交信道（Q）（214），其中数据符号被快速哈达马德变换器（218,220）处理以产生相应的数据位 。 数据被形成在信道（224）之间的成对产物中，并且在多个或所有活动用户正交码（226）上相加。 该和指示估计相位与接收的通信信号的实际相位不同的程度，并且用于调整PN码的应用阶段（230）。

公开(公告)号：WO9854866A3

公开(公告)日：1999-02-25

申请号：PCT/US9810914

申请日：1998-05-29

Applicant: QUALCOMM INC

Inventor： ZEHAVI EPHRAIM

IPC: H03M13/09 ,  H03M13/15 ,  H03M13/23 ,  H03M13/29 ,  H03M13/41 ,  H04L1/00 ,  H04L1/18 ,  H04W28/04 ,  H04W84/06

CPC classification number: H04L1/1874 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0064 ,  H04L1/0065 ,  H04L1/0066 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/08 ,  H04L1/1816 ,  H04L1/1829 ,  H04L1/1835 ,  H04L2001/0093 ,  H04W84/06

Abstract: In a communication system which conforms to the IS-99 standard, a concatenated code is used to provide for error free file transfer over the air. The concatenated code comprises Reed-Solomon coding (22), CRC block coding (32), and convolutional coding (36). At the transmitter, the file is partitioned into data frames and Reed-Solomon encoding (22) is performed on the data frames. CRC block encoding is then performed on the Reed-Solomon encoded data. The CRC encoded data is convolutionally encoded (36). The CRC block encoding (32) and convolutional encoding are performed in accordance with the IS-99 standard. The additional Reed-Solomon encoding step provides improved error correction capability while maintaining compatibility with the IS-99 standard. At the receiver, Reed-Solomon decoding (104) is performed if the number of erasures in a code word is less than or equal to (n-k) or the symbol errors in a code word is less than or equal to (n-k)/2. Otherwise, a request for retransmission is sent.

Abstract translation: 在符合IS-99标准的通信系统中，使用连接代码来提供空中无错误的文件传输。 级联代码包括里德 - 所罗门编码（22），CRC块编码（32）和卷积编码（36）。 在发射机上，文件被分割成数据帧，并对数据帧执行里德 - 所罗门编码（22）。 然后对Reed-Solomon编码数据执行CRC块编码。 CRC编码数据进行卷积编码（36）。 根据IS-99标准执行CRC块编码（32）和卷积编码。 附加的Reed-Solomon编码步骤提供改进的纠错能力，同时保持与IS-99标准的兼容性。 在接收机中，如果码字中的擦除次数小于或等于（nk）或码字中的码元错误小于或等于（nk）/ 2，则执行里德 - 所罗门解码（104） 。 否则，发送重传请求。

公开(公告)号：WO9515038A3

公开(公告)日：1995-06-15

申请号：PCT/US9413595

申请日：1994-11-22

Applicant: QUALCOMM INC

Inventor： WHEATLEY CHARLES E III ,  PADOVANI ROBERTO ,  ZEHAVI EPHRAIM

IPC: H04J13/04 ,  H03M13/23 ,  H04B20060101 ,  H04B7/005 ,  H04B7/216 ,  H04B7/24 ,  H04L1/00 ,  H04L1/08

CPC classification number: H04L1/0059 ,  H03M13/23 ,  H04L1/0015 ,  H04L1/0019 ,  H04L1/0025 ,  H04L1/0027 ,  H04L1/0041 ,  H04L1/0046 ,  H04L1/0054 ,  H04L1/0068 ,  H04L1/0069 ,  H04L1/0071 ,  H04L1/08 ,  H04W52/20 ,  H04W52/267

Abstract: The process of the present invention enables a communication link to have a higher data rate input signal while maintaining a constant data rate output signal. The method first convolutionally encodes the input data signal to produce a plurality of convolutionally encoded signals. Each of the convolutionally encoded signals are comprised of a plurality of data symbols. Each data symbol is repeated a predetermined number of times to produce a code repetition data sequence at a predetermined and fixed rate. The data sequence is then punctured such that symbols in predetermined locations of the data sequence are deleted thus generating a data sequence at a predetermined and fixed rate which is lower than that of the original data sequence. The encoded signals with the repeated data symbols are multiplexed to produce a data sequence.

Abstract translation: 本发明的功率控制过程使得移动无线电话机能够在所需的功率输出上持续更新基站。 基站以特定的速率向移动台发送帧。 如果移动台正确地接收并解码帧，则在下一帧中设置要发送到基站的功率控制位。 基于接收到的功率控制比特的错误率，基站确定是否增加或减少发送功率。

公开(公告)号：WO9858496A3

公开(公告)日：1999-05-20

申请号：PCT/US9812481

申请日：1998-06-16

Applicant: QUALCOMM INC

Inventor： VIJAYAN RAJIV ,  ODENWALDER JOSEPH P ,  WOLF JACK K ,  ZEHAVI EPHRAIM ,  LEE CHONG U

IPC: H04N21/2315 ,  H03M13/15 ,  H03M13/25 ,  H03M13/27 ,  H03M13/29 ,  H03M13/31 ,  H03M13/45 ,  H04J11/00 ,  H04L1/00 ,  H04L27/26 ,  H04N20060101 ,  H04N21/2383 ,  H04N21/438 ,  H04L27/38

CPC classification number: H03M13/2707 ,  H03M13/27 ,  H03M13/2936 ,  H03M13/31 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0065 ,  H04L1/0071 ,  H04L27/2626 ,  H04L27/2649 ,  H04N21/2383 ,  H04N21/4382

Abstract: In an orthogonal frequency division multiplexing (OFDM) system (10) which uses an outer Reed-Solomon encoder and interleaver (24) and an inner convolutional encoder (26), after the inner convolutional encoding the data bits are interleaved by an inner interleaver (28), and then grouped into symbols, each symbol having "m" bits. After grouping, the symbols are mapped to a complex plane using quadrature amplitude modulation (QAM). Thus, bits, not symbols, are interleaved by the inner interleaver (28). A receiver (12) performs a soft decision regarding the value of each bit in each complex QAM symbol received.

Abstract translation: 在使用外部Reed-Solomon编码器和交织器（24）和内部卷积编码器（26）的正交频分复用（OFDM）系统（10）中，在内部卷积编码之后，数据比特由内部交织器 28），然后分组成符号，每个符号具有“m”位。 分组后，使用正交幅度调制（QAM）将符号映射到复平面。 因此，位（而不是符号）被内部交织器（28）交织。 接收机（12）对接收到的每个复QAM符号中的每个比特的值执行软判决。

公开(公告)号：WO9905801A2

公开(公告)日：1999-02-04

申请号：PCT/US9815474

申请日：1998-07-21

Applicant: QUALCOMM INC

Inventor： ZEHAVI EPHRAIM

IPC: H04J13/04 ,  H04B7/26

CPC classification number: H04B7/2628

Abstract: In a time gated frequency division duplexing (FDD) data communication system, the base station (4) transmits two data frames on the forward link to the first remote station (6a, 6b) and receives two data frames on the reverse link from the second remote station (6a, 6b) at the first time frame. At the second time frame, the base station (4) transmits two data frames to the second remote station and receives two data frames from the first remote station. Data transmission and reception alternate over consecutive time frames. On the forward link, each data frame is covered with a unique Walsh code. The data is also spread with the short PNI and PNQ codes in accordance with the IS-95A standard. The data can be scrambled by the long PN code. The base station (4) delays the long PN code and short PN codes and properly loads the Walsh codes so that the processed data can be properly demodulated and descrambled by the destination remote station (6a, 6b).

Abstract translation: 在时分门控频分双工（FDD）数据通信系统中，基站（4）在前向链路上向第一远程站（6a，6b）发送两个数据帧，并在反向链路上从第二 远程站（6a，6b）在第一时间帧。 在第二时间帧，基站（4）向第二远程站发送两个数据帧，并从第一远程站接收两个数据帧。 数据传输和接收在连续的时间帧内交替进行。 在前向链路上，每个数据帧都覆盖有唯一的沃尔什码。 根据IS-95A标准，数据还可以用短PNI和PNQ码传播。 数据可以通过长PN码进行加扰。 基站（4）延迟长PN码和短PN码，并适当加载沃尔什码，以便处理后的数据可被目的地远程站（6a，6b）正确地解调和解扰。

公开(公告)号：CA2308631C

公开(公告)日：2010-10-05

申请号：CA2308631

申请日：1998-11-10

Applicant: QUALCOMM INC

Inventor： ZEHAVI EPHRAIM ,  SKINNER GORDON

IPC: H04B1/7073 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/71 ,  H04B7/185 ,  H04B7/216 ,  H04B7/26 ,  H04Q7/28

Abstract: A system and method for rapidly acquiring timing of an access transmission that uses an access probe (500) that is transmitted in stages. A first stage (560) of the access probe preamble (520) is spread with a short pseudonoise (PN) code pair. A second stage (570) of the access probe preamble (520) is spread with both the short PN code pair and a long PN code. Transmitting the access probe (500) in stages (560, 570) reduces the number of hypotheses, and hence the time, required by a receiver attempting to acquire the access probe (500).

公开(公告)号：ES2333654T3

公开(公告)日：2010-02-25

申请号：ES04024318

申请日：1996-01-17

Applicant: QUALCOMM INC

Inventor： PADOVANI ROBERTO ,  TIEDEMANN EDWARD G JR ,  ODENWALDER JOSEPH P ,  ZEHAVI EPHRAIM ,  WHEATLEY CHARLES E III

IPC: H04J3/16 ,  H03M13/23 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7115 ,  H04B7/005 ,  H04B7/26 ,  H04J3/00 ,  H04J3/22 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/18 ,  H04L1/00 ,  H04L1/08 ,  H04L5/02 ,  H04W52/26

Abstract: Un procedimiento para el formateo de una pluralidad de bits de datos en una trama de datos, comprendiendo el procedimiento: la selección de una tasa de transmisión de datos entre dos conjuntos alternativos de tasas de transmisión de datos; la selección de un formato de trama de datos entre una pluralidad de formatos de trama de datos, predeterminados y estructurados de forma específica de acuerdo con la tasa de transmisión de datos seleccionada; en el que dicha pluralidad de formatos de trama predeterminados y estructurados de forma específica tienen una duración temporal predeterminada, unos tipos de datos diferentes y unas tasas de transmisión de trama diferentes; la generación de un conjunto de bits de modo de trama correspondiente al formato de trama de datos seleccionado; el formateo de la pluralidad de bits de datos y del conjunto de bits de modo de trama de acuerdo con el formato de trama de datos seleccionado para producir dicha trama de datos; en el que dicho formateo incluye la codificación de la pluralidad de bits de datos y del conjunto generado de bits de modo de trama.

公开(公告)号：CA2213998C

公开(公告)日：2009-05-12

申请号：CA2213998

申请日：1996-02-28

Applicant: QUALCOMM INC

Inventor： MILLER DAVID S ,  LAROCCA JUDITH ,  ZEHAVI EPHRAIM

IPC: H04B7/216 ,  H04J3/16 ,  H04J11/00 ,  H04J13/00 ,  H04J13/16 ,  H04L1/00 ,  H04L7/02 ,  H04L9/22

Abstract: The present invention discloses a variable rate transmission system wherein a packet of variable rate data is modulated in accordance with a traffic channel sequence supplied by a traffic PN generator (63) if t he capacity of said traffic channel is greater than or equal to said data rate of the packet. If the capacity of said traffic channel is less tha n said data rate, the packet of variable rate data is modulated in accordance with the traffic channel sequence supplied by the traffic PN generator (63) and in accordance with at least one overflow channel sequence supplied by an overflow channel generator (65). The present inventi on further discloses a receiving system for receiving variable rate data where a received packet of variable rate data is demodulated in accordance with a traffic channel sequence supplied by a traffic PN generator (104) if the capacity of said traffic channel is greater than o r equal to a data rate of said packet. If the capacity of said traffic channel is less than said data rate of the packet of variable rate data, the received packet is demodulated in accordance with a traffic channel sequence supplied by a traffic PN generator (104) and in accordance with at least one overflow channel sequence supplied by an overflow channel generator (120).