公开(公告)号：US5878098A

公开(公告)日：1999-03-02

申请号：US672155

申请日：1996-06-27

Applicant: Michael M. Wang ,  Fuyun Ling ,  Terry M. Schaffner

Inventor： Michael M. Wang ,  Fuyun Ling ,  Terry M. Schaffner

IPC: H04B1/74 ,  H03M13/23 ,  H03M13/41 ,  H04B17/00 ,  H04J13/00 ,  H04L1/00 ,  H04L27/00

CPC classification number: H04L1/0054 ,  H03M13/3961 ,  H03M13/41 ,  H04L1/0046 ,  H04B2201/70705

Abstract: A method of determining a rate associated with a received signal including the steps of detecting the received signal (40); decoding the received signal at a first rate, determining a first path metric associated with the first rate, decoding the received signal at a second rate, and determining a second path metric associated with the second rate (44); calculating a plurality of discriminant functions based on the first and second path metrics (46); comparing at least one of the plurality of discriminant functions to a first predetermined value (48); and selecting one of the first and second rates as a determined rate based on the comparison.

Abstract translation: 一种确定与接收信号相关联的速率的方法，包括检测接收信号的步骤; 以第一速率对接收到的信号进行解码，确定与第一速率相关联的第一路径度量，以第二速率解码接收到的信号，以及确定与第二速率相关联的第二路径度量（44）。 基于所述第一和第二路径量度（46）计算多个判别函数; 将所述多个判别函数中的至少一个与第一预定值（48）进行比较; 并且基于所述比较来选择所述第一和第二速率中的一个作为确定的速率。

公开(公告)号：US5774496A

公开(公告)日：1998-06-30

申请号：US658030

申请日：1996-06-04

Applicant: Brian K. Butler ,  Roberto Padovani ,  Ephraim Zehavi

Inventor： Brian K. Butler ,  Roberto Padovani ,  Ephraim Zehavi

IPC: H04B1/707 ,  H04L1/00 ,  H04L1/08 ,  H04L25/02 ,  H04B17/00

CPC classification number: H04L1/0057 ,  H04L1/0046 ,  H04L1/0054 ,  H04L1/08 ,  H04L1/208 ,  H04L25/0262 ,  H04B2201/70705

Abstract: A system for determining the rate at which data has been encoded in the receiver of a variable-rate communications system. The data is received in frames having a fixed number of symbols. Multiple copies of symbols fill the frame when data is encoded at less than the full rate. At an encoding rate of one fourth the full rate, for example, each symbol in the frame is repeated four times. The incoming symbols are provided to multiple paths for decoding. Each path decodes the symbols at one of the possible rates. Error metrics, which describe the quality of the decoded symbols, are extracted and provided to a processor. The error metrics may include Cyclic Redundancy Check (CRC) results, Yamamoto Quality Metrics, and Symbol Error Rates. The processor analyzes the error metrics and determines the most probable rate at which the incoming symbols were encoded.

公开(公告)号：US5627845A

公开(公告)日：1997-05-06

申请号：US271668

申请日：1994-07-07

Applicant: Nobuo Asano ,  Osamu Kato

Inventor： Nobuo Asano ,  Osamu Kato

IPC: H03M13/41 ,  H03M13/23 ,  H04J3/22 ,  H04L1/00 ,  H04L1/08 ,  H04L25/02 ,  H04L29/08 ,  G06F11/10

CPC classification number: H04L1/0046 ,  H04J3/22 ,  H04L1/0054 ,  H04L1/08 ,  H04L25/0262 ,  H04B2201/70705

Abstract: In variable bit rate communications in which the information rate changes at B/2.sup.n (where n is 0 or a positive integer) in each frame when the maximum information rate is B, at the transmitter side, information data is convolution coded in order to carry out an error correction of the information data, and when n.gtoreq.1, coded data is repeatedly transmitted by (2.sup.n -1) times. At the receiver side, the information rate is detected from the transmission data that has been received, and when carrying out Viterbi decoding, an information rate is estimated by utilizing the repetition characteristics of the data, so that the coded data is Viterbi decoded for only the estimated bit rate, to thereby restrict an increase in the power consumption of mobile terminal units that are driven by batteries.

Abstract translation: 在最大信息速率为B时，在每帧中B / 2n（其中n为0或正整数）的信息速率变化的可变比特率通信中，在发送方，信息数据被卷积编码以便携带 输出信息数据的纠错，当n> / = 1时，通过（2n-1）次重复发送编码数据。 在接收侧，从接收到的发送数据中检测出信息速率，当进行维特比解码时，利用数据的重复特性来估计信息速率，使编码数据仅被维特比解码 估计的比特率，从而限制由电池驱动的移动终端单元的功耗的增加。

公开(公告)号：WO2014153735A1

公开(公告)日：2014-10-02

申请号：PCT/CN2013/073264

申请日：2013-03-27

Applicant: 华为技术有限公司

Inventor： 吕永霞 ,  汲桐 ,  张雯

IPC: H04B1/69 ,  H04L27/26

CPC classification number: H04B1/709 ,  H04B1/69 ,  H04B2201/70703 ,  H04B2201/70705 ,  H04J13/0003 ,  H04L25/03006 ,  H04W4/70 ,  H04W24/02 ,  H04W88/08

Abstract: 本发明实施例提供了一种无线通信方法、用户设备、基站及系统，涉及无线通信领域，所述方法包括：获取频域扩频因子、符号级扩频因子和传输时间间隔级扩频因子；根据获取到的扩频因子对第一待发送信息分别进行频域扩频、符号级扩频和传输时间间隔级扩频并发送；或者，根据获取到的扩频因子对基站发送的第二扩频后的信息进行解扩频。本发明通过获取频域扩频因子、符号级扩频因子以及传输时间间隔级扩频因子，并根据获取到的扩频因子发送或接收信息，解决了现有技术中在频域或时域上进行筒单的重复发送时发送效率低，延时较长，且同频段带宽中各用户设备之间的干扰比较严重的问题，达到了提高系统容量和资源利用率的目的。

公开(公告)号：WO2012092070A1

公开(公告)日：2012-07-05

申请号：PCT/US2011/066528

申请日：2011-12-21

Applicant: MICROCHIP TECHNOLOGY INCORPORATED ,  NÉMETH, József, G. ,  KOVÁCS, Péter, Szilveszter

Inventor： NÉMETH, József, G. ,  KOVÁCS, Péter, Szilveszter

IPC: H04B1/707

CPC classification number: H04B1/707 ,  H04B1/00 ,  H04B7/216 ,  H04B2201/70705

Abstract: In a system and method for wireless communication with a transmitter and a receiver, the transmitter is operable to wirelessly transmit digital information to the receiver with a plurality of data transmission rates using a modulation format, wherein the digital information is transmitted using a transmission frame including a header part and a payload part, and the header part comprises a preamble, wherein the modulation format is the same for all data transmission rates and wherein the data transmission rate is at least encoded into the preamble of the frame, and wherein the receiver is configured to determine the data transmission rate when receiving the preamble.

Abstract translation: 在用于与发射机和接收机进行无线通信的系统和方法中，发射机可操作以使用调制格式以多个数据传输速率向接收机无线传输数字信息，其中数字信息使用包括 标题部分和有效载荷部分，并且标题部分包括前导码，其中调制格式对于所有数据传输速率是相同的，并且其中数据传输速率至少编码到帧的前导码中，并且其中接收机是 被配置为在接收前导码时确定数据传输速率。

公开(公告)号：WO2010117328A1

公开(公告)日：2010-10-14

申请号：PCT/SE2010/050384

申请日：2010-04-09

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) ,  RINGSTRÖM, Markus ,  MOQVIST, Pär ,  WANG, Yi-Pin Eric

Inventor： RINGSTRÖM, Markus ,  MOQVIST, Pär ,  WANG, Yi-Pin Eric

IPC: H04B1/10 ,  H04B1/707

CPC classification number: H04B1/7103 ,  H04B2201/70705 ,  H04B2201/70707 ,  H04W24/00

Abstract: The transport format (TF) (302) of a signal (108) may be blindly detected from a reduced set of TF hypotheses (606). In an example embodiment, a method (800) for the blind detection of a TF (302) of a signal (108) includes filtering (802) a set of transport format hypotheses to identify a reduced set of TF hypotheses (606)using one or more filtering schemes (610a, 610b, 610c). From the reduced set of TF hypotheses (606), a TF (302) that is associated with an interfering signal (204) is detected. The TF (302) includes a modulation (304) and a spreading factor (306) for the interfering signal (204). It may also include a number of channelization codes (308). In an example implementation, when an interfering signal (204) is to be canceled,symbols carried by the signal are detected using the detected TF (302). Example filtering schemes (610a, 610b, 610c) include filtering based on system design/operation, filtering based on known configuration information, filtering based on an expected level of interference contribution, and so forth.

Abstract translation: 信号（108）的传输格式（TF）（302）可以从减少的一组TF假设盲目地检测（606）。 在示例实施例中，用于盲检测信号（108）的TF（302）的方法（800）包括过滤（802）一组传输格式假设，以使用一个 或更多的滤波方案（610a，610b，610c）。 从减少的TF假设集合（606）中，检测与干扰信号（204）相关联的TF（302）。 TF（302）包括用于干扰信号（204）的调制（304）和扩频因子（306）。 它还可以包括多个信道化码（308）。 在示例实现中，当要消除干扰信号（204）时，使用检测到的TF（302）检测由信号携带的符号。 示例性滤波方案（610a，610b，610c）包括基于系统设计/操作的滤波，基于已知配置信息的滤波，基于预期干扰贡献水平的滤波等。

公开(公告)号：WO2007070002A3

公开(公告)日：2007-08-09

申请号：PCT/SE2006050573

申请日：2006-12-12

Applicant: ERICSSON TELEFON AB L M

Inventor： OLSON HENRIK ,  FORSBERG BJOERN ,  MESKO GEORG ,  NORDHAMN ERIK

IPC: H04B7/26 ,  H04B1/707

CPC classification number: H04B1/7103 ,  H04B1/7117 ,  H04B1/712 ,  H04B2201/70705

Abstract: A flexible and resource-efficient despreading-on-demand (DoD) technique is described where only channels that actually contain data to be despread are despread, and only a single despreading operation need be performed using the actual spreading factor associated with that data. In one example, the data portion of the received signal is buffered for a frame so that an associated transport format, including the actual spreading factor, can be determined before the data is despread. The data is buffered in a memory at a first rate and then subsequently read out at a second rate that is considerably faster than the first rate. The fast data read-out allows despreading at a high rate so that the despread data symbols from the buffered frame are available for further processing shortly after the last sample belonging to the frame has been received.

Abstract translation: 描述了一种灵活的资源高效的按需解扩（DoD）技术，其中只有实际包含要解扩的数据的信道被解扩，并且仅需要使用与该数据相关联的实际扩频因子执行单个解扩操作。 在一个例子中，接收信号的数据部分被缓存一个帧，使得在解扩数据之前可以确定包括实际扩频因子的相关传输格式。 数据以第一速率缓冲在存储器中，然后以比第一速率快得多的第二速率读出。 快速数据读出允许以高速率解扩，使得来自缓冲帧的解扩数据符号可用于在接收到属于该帧的最后一个样本之后不久进行进一步处理。

公开(公告)号：WO2006109438A1

公开(公告)日：2006-10-19

申请号：PCT/JP2006/305514

申请日：2006-03-20

Applicant: 株式会社 エヌ・ティ・ティ・ドコモ ,  安部田 貞行 ,  丹野 元博 ,  三木 信彦 ,  佐和橋 衛

Inventor： 安部田 貞行 ,  丹野 元博 ,  三木 信彦 ,  佐和橋 衛

IPC: H04Q7/38 ,  H04B1/707

CPC classification number: H04B1/707 ,  H04B2201/70705 ,  H04W48/12

Abstract: 　基地局に、上位レイヤの制御信号を送信する制御チャネルの伝送速度を決定する伝送速度決定手段と、決定された伝送速度にしたがって、上位レイヤの制御信号を送信する制御チャネルに所定の帯域を割り当て、送信する送信手段とを備えることにより達成される。

Abstract translation: 基站设置有传输速度决定装置，用于确定发送上级层的控制信号的控制信道的传输速度; 以及发送装置，用于将规定的频带分配给发送与所决定的发送速度对应的上位层的控制信号的控制信道。

公开(公告)号：WO0221729A3

公开(公告)日：2002-06-13

申请号：PCT/US0127626

申请日：2001-09-05

Applicant: QUALCOMM INC

Inventor： AGRAWAL AVNEESH ,  TERASAWA DAISUKE

IPC: H04J13/20 ,  H04B1/7117 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04Q7/38 ,  H04B1/707

CPC classification number: H04J13/0044 ,  H04B7/2628 ,  H04B2201/70705 ,  H04B2201/709709

Abstract: Techniques for recovering data transmitted on a physical channel in which channelization code is not known at the time of the data recovery. A modulated signal is received and processed to provide received samples (612). A hypothesized channelization code (e.g., an OVSF code in the W-CDMA system) is selected (616) and used to process the received samples to generate partially processed symbols (618). The hypothesized channelization code is a "base" code that can be used to generate all possible channelization codes that may have been used for the physical channel. Intermediate results representative of the partially processed symbols are stored (622) and, upon determination of the actual channelization code (624), further processed (626) in accordance with the actual and hypothesized channelization codes to provide the final results. The additional processing includes partitioning the intermediate results into sets, scaling each intermediate result in a particular set with a scaling factor (+1 or 1) determined by the actual and hypothesized channelization codes, and combining the scaled results in each set to obtain a final result. In the STTD mode in the W-CDMA system, the final results from multiple actual OVSF code intervals can be selectively combine to obtain a recovered symbol (628).

Abstract translation: 用于恢复在数据恢复时信道化代码未知的物理信道上传输的数据的技术。 接收并处理调制信号以提供接收采样（612）。 假定的信道化码（例如，W-CDMA系统中的OVSF码）被选择（616）并用于处理所接收的采样以生成部分处理的码元（618）。 假设的信道化码是一个“基本”码，可用于生成所有可能用于物理信道的可能的信道化码。 代表部分处理的符号的中间结果被存储（622），并且在确定实际信道化代码（624）时，根据实际的和假设的信道化代码进一步处理（626）以提供最终结果。 附加处理包括将中间结果划分成集合，用由实际和假定信道化码确定的缩放因子（+1或1）将每个中间结果缩放到特定集合中，并组合每个集合中的缩放结果以获得最终 结果。 在W-CDMA系统中的STTD模式中，来自多个实际OVSF码间隔的最终结果可以被选择性地组合以获得恢复符号（628）。

公开(公告)号：WO0193436A3

公开(公告)日：2002-03-28

申请号：PCT/SE0101174

申请日：2001-05-23

Applicant: ERICSSON TELEFON AB L M

Inventor： KARLSSON JONAS ,  ESMAILZADEH RIAZ

IPC: H04B1/7103 ,  H04B1/7107 ,  H04B1/16 ,  H04B1/10 ,  H04B7/216

CPC classification number: H04B1/7103 ,  H04B1/7107 ,  H04B2201/70705 ,  H04B2201/70707

Abstract: Method and apparatus for minimizing the processing delay incurred by an IC receiver (32) over conventional receivers (20) in a CDMA cellular system are disclosed. The method and apparatus involve operating the conventional receiver (20) and the IC receiver (32) in parallel to each other. Data from the conventional receiver (20) are then used to supplement data from the IC receiver (32) in order to minimize the delays incurred by the IC receiver (32).

Abstract translation: 公开了一种用于最小化CDMA接收机（32）在CDMA蜂窝系统中的常规接收机（20）所引起的处理延迟的方法和装置。 所述方法和装置包括相互并行地操作常规接收器（20）和IC接收器（32）。 然后使用来自常规接收器（20）的数据来补充来自IC接收器（32）的数据，以便最小化由IC接收器（32）引起的延迟。