公开(公告)号：WO2003019837A1

公开(公告)日：2003-03-06

申请号：PCT/JP2002/008842

申请日：2002-08-30

Applicant: 株式会社エヌ・ティ・ティ・ドコモ

Inventor： 佐和橋 衛 ,  新 博行 ,  安部田 貞行 ,  前田 規行

IPC: H04J11/00

CPC classification number: H04B1/692 ,  H04B2201/70705 ,  H04J11/005 ,  H04L1/0003 ,  H04L5/0021 ,  H04L25/0216 ,  H04L25/0228 ,  H04L27/2647

Abstract: A radio transmission system for radio transmission of information between a transmission station and a reception station by using an orthogonal frequency code-division multiplexing transmission method for parallel transmission of the same information by a plurality of sub-carriers. The system includes spread ratio variable control transmission means for parallel conversion of information channel-encoded at the transmission station, according to a symbol transmitted simultaneously, and spreading the series of the parallelized symbols by the spread code series of the specified spread ratio at least in one of the frequency direction and the time direction.

Abstract translation: 一种用于通过使用用于通过多个子载波并行传输相同信息的正交频分复用传输方法在发送站和接收站之间进行无线电传输信息的无线电传输系统。 该系统包括扩频比可变控制传输装置，用于根据同时传输的符号并行转换在传输站处编码的信道，并且通过指定扩频比的扩展码序列扩展一系列并行化符号，至少在 频率方向和时间方向之一。

公开(公告)号：WO0163778A3

公开(公告)日：2002-05-30

申请号：PCT/US0105682

申请日：2001-02-23

Applicant: TANTIVY COMM INC ,  ROUPHAEL ANTOINE J ,  HOFFMANN JOHN E ,  NELSON GEORGE RODNEY JR ,  PATEL SAMIR K ,  PROCTOR JAMES A JR ,  RILEY DANIEL L

Inventor： ROUPHAEL ANTOINE J ,  HOFFMANN JOHN E ,  NELSON GEORGE RODNEY JR ,  PATEL SAMIR K ,  PROCTOR JAMES A JR ,  RILEY DANIEL L

IPC: H04B1/707 ,  H04B1/7105 ,  H04B1/712

CPC classification number: H04B1/707 ,  H04B1/7105 ,  H04B1/712 ,  H04B2201/70703 ,  H04B2201/70705 ,  H04B2201/7071

Abstract: A single, common correlation filter (CF) core is provided in a wireless system using CDMA (code division multiple access). A plurality of channels with different data rates are provided in the wireless system. The channels provided in the wireless system include the access channel, the maintenance channel, and the traffic channel in which information (e.g., pilot or data symbols or both) is transmitted at the tier 1 (which is the basic despreading rate), tier 2 and tier 3 rates. The data rate for transmitting the information is programmable by an external programmable processor, e.g., a digital signal processor (DSP). A user-unique code, such as a PN (pseudo-random noise) code, is applied to the information being transmitted in the channels of the wireless system. Theinformation is modulated and transmitted in any one of the channels at any data rate. The transmitted information is correlated at the basic despreading rate (i.e., the tier 1 rate) in the correlation filter (CF) of the wireless system by time multiplexing delayed versions of the PN code (or orthogonal code, Walsh code) to the correlation filter core. The correlated information is then demultiplexed and demodulated. The demodulated information is summed at the proper integer multiple of the tier 1 rate to achieve the tier 2 and tier 3 rates. One or more signal components are selected (in terms of the received power, signal-to-noise ratio or multipath width) in a window or time period for optimal information recovery. The selecting step can also be implemented according to a preprogrammed time alignment. Furthermore, outputs from the demodulated information can be provided and combined for temporal diversity. Spatial diversity is achieved by providing a plurality of antennas, and a plurality of receivers at a location and providing a single, common correlation filter at each of the plurality of antennas of the receivers in the wireless system.

Abstract translation: 在使用CDMA（码分多址）的无线系统中提供单个公共相关滤波器（CF）核心。 在无线系统中提供具有不同数据速率的多个信道。 在无线系统中提供的信道包括接入信道，维护信道和业务信道，其中信息（例如，导频或数据符号或两者）在层1（其是基本解扩频率），层2 和三级费率。 用于传输信息的数据速率可由外部可编程处理器（例如数字信号处理器（DSP））编程。 诸如PN（伪随机噪声）码的用户唯一码被应用于在无线系统的信道中发送的信息。 信息在任何一个通道中以任何数据速率进行调制和传输。 通过将PN码（或正交码，沃尔什码）的延迟版本时间多路复用到相关滤波器（LF），在无线系统的相关滤波器（CF）中以基本解扩频率（即，层1频率） 核心。 相关信息然后被解复用和解调。 解调后的信息以第一层速率的适当整数倍加总，以达到第二层和第三层速率。 在窗口或时间段内选择一个或多个信号分量（就接收功率，信噪比或多径宽度而言）以实现最佳信息恢复。 选择步骤也可以根据预编程的时间对准来实现。 此外，来自解调信息的输出可以被提供并组合用于时间分集。 通过在一个位置处提供多个天线和多个接收机并在无线系统中的接收机的多个天线中的每个天线处提供单个公共相关滤波器来实现空间分集。

公开(公告)号：WO02033856A1

公开(公告)日：2002-04-25

申请号：PCT/KR2001/001782

申请日：2001-10-20

IPC: H04B7/26 ,  H04W28/22 ,  H04W36/36 ,  H04W48/16 ,  H04W76/02

CPC classification number: H04B7/264 ,  H04B1/707 ,  H04B2201/70705

Abstract: Disclosed is a mobile station for determining a data rate for a packet data service in a mobile communication system including a base station, and the mobile station being provided with a voice service and a packet data service from the base station. In the mobile station, a receiver receives orthogonal code allocation information indicating the number of orthogonal codes allocated for the packet data service, a measurer measures a CIR using a received pilot channel, and a controller determines a data rate corresponding to the measured CIR, controls the determined data rate based on the number of the allocated orthogonal codes, and determines a controlled data rate.

Abstract translation: 公开了一种用于在包括基站的移动通信系统中确定分组数据业务的数据速率的移动台，并且该移动站被提供有来自基站的语音服务和分组数据服务。 在移动站中，接收机接收指示分配给分组数据业务的正交码数量的正交码分配信息，测量者使用接收到的导频信道测量CIR，并且控制器确定与测量的CIR对应的数据速率，控制 基于所分配的正交码的数量确定的数据速率，并确定受控的数据速率。

公开(公告)号：WO0165715A3

公开(公告)日：2001-12-27

申请号：PCT/GB0100846

申请日：2001-02-28

Applicant: ROKE MANOR RESEARCH ,  JOHNSON DAVID

Inventor： JOHNSON DAVID

IPC: H04B1/707 ,  H04J11/00 ,  H04J13/00

CPC classification number: H04B1/7105 ,  H04B2201/70705 ,  H04J13/0044

Abstract: In mobile telecommunications systems, such as UMTS, user communications can be transmitted in parallel within a single timeslot by spreading the different user communications amongst a plurality of orthogonal spreading codes. Each spreading code has a characteristic spreading factor. The communications transmitted in each timeslot are joint detected and de-spread into the original user communications by a joint detection algorithm. There is provided a method of post-processing the results of the joint detection algorithm when the spreading factors are unknown. The method of post-processing operates without the need to apply the joint detection algorithm more than once. Consequently, spreading codes with different spreading factors can be used in one timeslot.

Abstract translation: 在诸如UMTS的移动电信系统中，可以在单个时隙内并行发送用户通信，通过在多个正交扩频码中扩展不同的用户通信。 每个扩展码具有特征扩展因子。 在每个时隙中发送的通信通过联合检测算法被联合检测和解扩展成原始用户通信。 提供了当扩频因子未知时，对联合检测算法的结果进行后处理的方法。 后处理的方法不需要多次应用联合检测算法。 因此，可以在一个时隙中使用具有不同扩频因子的扩展码。

公开(公告)号：WO01065715A2

公开(公告)日：2001-09-07

申请号：PCT/GB2001/000846

申请日：2001-02-28

IPC: H04B1/707 ,  H04J11/00 ,  H04J13/00

CPC classification number: H04B1/7105 ,  H04B2201/70705 ,  H04J13/0044

Abstract: In mobile telecommunications systems, such as UMTS, user communications can be transmitted in parallel within a single timeslot by spreading the different user communications amongst a plurality of orthogonal spreading codes. Each spreading code has a characteristic spreading factor. The communications transmitted in each timeslot are joint detected and de-spread into the original user communications by a joint detection algorithm. There is provided a method of post-processing the results of the joint detection algorithm when the spreading factors are unknown. The method of post-processing operates without the need to apply the joint detection algorithm more than once. Consequently, spreading codes with different spreading factors can be used in one timeslot.

Abstract translation: 在诸如UMTS系统的移动电信系统中，通过在多个正交分配码之间分配不同的用户通信，可以使用单个时隙并行发送用户通信。 每个分配代码都有一个特征分配因子。 在每个时隙中传输的通信被联合检测，然后使用组合检测算法在原始用户通信中分发。 本发明涉及当分布因子未知时对共轭检测算法的结果进行后处理的方法。 后处理方法运行时不需要再一次应用共轭检测算法。 因此，可以在一个时间间隔内使用具有不同分配因子的分配代码。

公开(公告)号：WO01043330A2

公开(公告)日：2001-06-14

申请号：PCT/EP2000/011874

申请日：2000-11-28

IPC: H04B1/707 ,  H04J13/00 ,  H04L25/02 ,  H04L1/00

CPC classification number: H04L25/0262 ,  H04B2201/70705 ,  H04J13/0044

Abstract: The present invention relates to a method and a circuitry for estimating a spreading factor and/or data transmission rate in a communication system that employs variable data transmission rates. A received transmission signal is analysed in order to estimate noise variances for those spreading factors that are possible for a data frame in the signal. The estimate is based on information that is determined by assuming that the smallest possible spreading factor was used for the transmission of the signal. The estimates are then scaled by predefined constants, each of the constants depending on the respective possible spreading factor. The smallest one of the scaled estimates is determined, whereafter the most probable spreading factor of the received data frame is determined based on the smallest variance estimate.

Abstract translation: 本发明涉及一种用于估计通信系统中使用可变数据速率进行数据传输的扩展因子和/或数据传输速率的方法和电路。 为了估计关于信号中数据帧的可能扩频因子的噪声变化，分析接收到的传输信号。 该估计是基于根据以下假设确定的信息：假设用于信号传输的最小可能扩频因子。 然后，通过预定义的常数对估计进行缩放，每个常数分别取决于扩频因子。 确定缩小的估计值中的较低者，由此从最低方差估计值确定接收到的数据帧的最可能的扩频因子。

公开(公告)号：WO2001022610A1

公开(公告)日：2001-03-29

申请号：PCT/US2000/002621

申请日：2000-02-02

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION ,  REZNIK, Alexander ,  LUBECKI, Timothy, J. ,  ZEIRA, Ariela

Inventor： REZNIK, Alexander ,  LUBECKI, Timothy, J. ,  ZEIRA, Ariela

IPC: H04B1/707

CPC classification number: H04B1/7105 ,  H04B1/7093 ,  H04B1/71052 ,  H04B2201/70703 ,  H04B2201/70705

Abstract: A multiuser detector that detects and decodes synchronous or asynchronous CDMA subchannels having different spreading factors with reduced computational complexity. The multiuser detector is compatible with ZF-BLE, MMSE, decorrelating detectors and the like using Cholesky decomposition to minimize numeric operations. The system and method arranges the columns of system transmission response matrices representing the response characteristics of individual users into a total system transmission response matrix which represents a plurality of matched-filter responses for a given block of received data. The invention in conjunction with Cholesky decomposition reduces the number of required mathematic operations prior to parallel matched filtering.

Abstract translation: 一种多用户检测器，其检测并解码具有不同扩频因子的同步或异步CDMA子信道，降低了计算复杂度。 多用户检测器与使用Cholesky分解的ZF-BLE，MMSE，去相关检测器等兼容，以最小化数字运算。 系统和方法将表示各个用户的响应特性的系统传输响应矩阵的列排列成表示针对给定的接收数据块的多个匹配滤波器响应的总系统传输响应矩阵。 本发明结合Cholesky分解在并行匹配滤波之前减少了所需数学运算的数量。

公开(公告)号：EP2504930A1

公开(公告)日：2012-10-03

申请号：EP10805320.8

申请日：2010-11-22

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： WANG, Yi-Pin Eric

IPC: H04B1/707

CPC classification number: H04B1/707 ,  H04B1/7115 ,  H04B2201/70705

Abstract: In a blind spreading factor detecting receiver, the amplitude of a desired signal term is decoupled from the spreading factor hypothesis for that signal. Furthermore, the amplitude of the desired signal and the variance of an associated impairment term are estimated, and the estimates used to form a spreading factor hypothesis. Additionally, in one or more embodiments, a suboptimal detector does not rely on estimates of the amplitude of the desired signal or variance of the impairment term. Rather, the detector relics on scaled values that are partially despread using an initial spreading factor not greater than the smallest possible spreading factor used by the signal of interest, and combined using combining weights from a Rake or G-Rake processor, wherein the scaling factor is chosen to yield a unity ratio between the signal amplitude and noise variance after scaling.

Abstract translation: 在盲扩频因子检测接收机中，期望信号项的幅度与该信号的扩频因子假设分离。 此外，估计期望信号的幅度和相关减损项的方差，并将估计用于形成扩频因子假设。 另外，在一个或多个实施例中，次优检测器不依赖于期望信号的幅度或减损项的变化的估计。 相反，检测器在经缩放的值上残留缩放值，该缩放值使用不大于感兴趣信号使用的最小可能扩频因子的初始扩频因子部分解扩，并且使用来自Rake或G-Rake处理器的组合权重进行组合，其中缩放因子 被选择以在缩放之后产生信号幅度与噪声方差之间的单位比率。

公开(公告)号：EP1545026B1

公开(公告)日：2012-06-13

申请号：EP05075561.0

申请日：1996-02-23

Applicant: NTT DoCoMo, Inc.

Inventor： Okumura, Yukihiko c/o NTT DoCoMo, Inc. ,  Adachi, Fumiyuki c/o NTT DoCoMo, Inc. ,  Ohno, Koji c/o NTT DoCoMo, Inc. ,  Higashi, Akihiro c/o NTT DoCoMo, Inc.

IPC: H04B7/26

CPC classification number: H04L1/0046 ,  H04B1/707 ,  H04B7/2628 ,  H04B2201/70703 ,  H04B2201/70705 ,  H04J3/14 ,  H04J3/1682 ,  H04L1/0002 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/0013 ,  H04L1/0025 ,  H04L1/0032 ,  H04L1/0038 ,  H04L1/0039 ,  H04L1/0059 ,  H04L1/0061 ,  H04L1/0063 ,  H04L1/0071 ,  H04L1/0079 ,  H04L1/0086 ,  H04L1/08 ,  H04L7/048 ,  H04L2001/0098 ,  Y02D50/10

Abstract: A variable rate transmission method that can vary the transmission rate of data. A transmitting side supplies a transmitted data sequence to an error detecting encoder (105) and a frame memory (103). The frame memory (103) stores data of a variable length to be transmitted in one frame. The error detecting encoder (105) calculates an error detecting code (such as CRC code) for each frame of the transmitted data. A multiplexer (104) adds the calculated error detecting code ahead of the transmitted data to place it at the initial position of the frame, and sequentially outputs the data sequence frame by frame. A receiving side calculates an error detecting code of the data in each transmitted frame in the same manner as the transmitting side, and compares the calculated error detecting code with the error detecting code at the initial position of the frame. The end bit of the frame data is decided as a position at which the two error detecting codes coincide. This makes it possible to transmit variable length data without informing the receiving side of the data length in each frame. This is equivalent that the transmission rate can be varied freely. A variable rate transmission method that can vary the transmission rate of data. A transmitting side supplies a transmitted data sequence to an error detecting encoder (105) and a frame memory (103). The frame memory (103) stores data of a variable length to be transmitted in one frame. The error detecting encoder (105) calculates an error detecting code (such as CRC code) for each frame of the transmitted data. A multiplexer (104) adds the calculated error detecting code ahead of the transmitted data to place it at the initial position of the frame, and sequentially outputs the data sequence frame by frame. A receiving side calculates an error detecting code of the data in each transmitted frame in the same manner as the transmitting side, and compares the calculated error detecting code with the error detecting code at the initial position of the frame. The end bit of the frame data is decided as a position at which the two error detecting codes coincide. This makes it possible to transmit variable length data without informing the receiving side of the data length in each frame. This is equivalent that the transmission rate can be varied freely.

公开(公告)号：EP1529348B8

公开(公告)日：2007-03-21

申请号：EP03739284.2

申请日：2003-06-23

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KIM, Younglok ,  PAN, Jung-Lin ,  ZEIRA, Ariela ,  REZNIK, Alexander

IPC: H04B1/69

CPC classification number: H04J13/0044 ,  H04B1/707 ,  H04B1/71052 ,  H04B1/71055 ,  H04B2201/70703 ,  H04B2201/70705

Abstract: A plurality of communication signals is received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The associated codes have a scrambling code period. A total system response matrix has blocks. Each block has one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication. M is based on the scrambling code period. Data of the received plurality of communication signals is received using the constructed system response matrix.

Abstract translation: 接收到多个通信信号。 每个通信信号都有一个相关的代码。 至少两个通信信号具有不同的扩频因子。 相关的代码有一个扰码周期。 整个系统响应矩阵有块。 每个块具有一个长度为M的维度和一个长度为M的部分长度和每个通信的扩展因子。 M基于扰码周期。 使用构建的系统响应矩阵来接收所接收的多个通信信号的数据。