公开(公告)号：US20110194571A1

公开(公告)日：2011-08-11

申请号：US13088958

申请日：2011-04-18

Applicant: Fatih M. Ozluturk ,  Gary R. Lomp ,  John Kowalski

Inventor： Fatih M. Ozluturk ,  Gary R. Lomp ,  John Kowalski

IPC: H04J13/00

CPC classification number: H04B7/2637 ,  G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70754 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2628 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/00 ,  H04J13/004 ,  H04J13/0048 ,  H04J13/0077 ,  H04J13/10 ,  H04J13/107 ,  H04J13/12 ,  H04J13/16 ,  H04J2013/0037 ,  H04L1/0001 ,  H04L1/004 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0059 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04N1/00912 ,  H04N1/3333 ,  H04N2201/3335 ,  H04W52/04 ,  H04W52/08 ,  H04W52/143 ,  H04W52/146 ,  H04W52/24 ,  H04W52/241 ,  H04W52/245 ,  H04W52/247 ,  H04W52/26 ,  H04W52/262 ,  H04W52/322 ,  H04W52/325 ,  H04W52/343 ,  H04W52/346 ,  H04W52/36 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60 ,  Y02D10/14

Abstract: A code-division-multiple-access (CDMA) system employing spread-spectrum modulation. The CDMA system has a base station (BS), and a plurality of subscriber units. The signals transmitted between the base station and subscriber unit use spread-spectrum modulation. The improvement apparatus for adaptive forward power control (APC) from a base station (BS) to a subscriber unit (SU), includes sending from the base station, using spread-spectrum modulation, a BS-spreading code on a forward channel. The subscriber unit despreads the BS-spreading code on the forward channel as a despread signal, determines a first power level P.sub.d which includes power of the despread signal plus noise and a second power level P.sub.N, which includes despread-noise power. The subscriber unit determines a first error signal e.sub.1, from the first power level P.sub.d, the second power level P.sub.N, and a required signal-to-noise ratio SNR.sub.REQ for service type, and a second error signal e.sub.2, from a measure of total received power P.sub.r and an automatic gain control (AGC) set point P.sub.o. The subscriber unit forms a combined error signal from the first error signal e.sub.1, the second error signal e.sub.2, a first weight a.sub.1 and a second weight a.sub.2, and hard limits the combined error signal to form a single APC bit. The APC bit is transmitted to the base station. In response to the APC bit, the base station adjusts transmitter power to the subscriber unit.

Abstract translation: 采用扩频调制的码分多址（CDMA）系统。 CDMA系统具有基站（BS）和多个用户单元。 在基站和用户单元之间传输的信号使用扩频调制。 用于从基站（BS）到用户单元（SU）的自适应前向功率控制（APC）的改进装置包括使用扩频调制在前向信道上从基站发送BS扩展码。 用户单元将前向信道上的BS扩展码解扩展为解扩信号，确定包括解扩信号加噪声功率的第一功率电平P.sub.d和包括第二功率电平P 去噪功率。 订户单元从第一功率电平P.sub.d，第二功率电平P和N确定第一误差信号e 1，以及所需的信噪比SNR.sub.REQ，用于 服务类型和第二错误信号e 2，从总接收功率P.subr的测量和自动增益控制（AGC）设定点P.sub.o。 订户单元形成来自第一误差信号e 1，第二误差信号e 2，第一权重a 1和第二权重a 2的组合误差信号，以及硬限制 组合的误差信号形成单个APC位。 APC位被传送到基站。 响应于APC位，基站调整发射机功率给用户单元。

公开(公告)号：US20110158202A1

公开(公告)日：2011-06-30

申请号：US13041745

申请日：2011-03-07

Applicant: Fatih Ozukturk ,  Alexander Jacques ,  Gary Lomp ,  John Kowalski

Inventor： Fatih Ozukturk ,  Alexander Jacques ,  Gary Lomp ,  John Kowalski

IPC: H04B7/216

CPC classification number: H04B7/2637 ,  G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70754 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2628 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/00 ,  H04J13/004 ,  H04J13/0048 ,  H04J13/0077 ,  H04J13/10 ,  H04J13/107 ,  H04J13/12 ,  H04J13/16 ,  H04J2013/0037 ,  H04L1/0001 ,  H04L1/004 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0059 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04N1/00912 ,  H04N1/3333 ,  H04N2201/3335 ,  H04W52/04 ,  H04W52/08 ,  H04W52/143 ,  H04W52/146 ,  H04W52/24 ,  H04W52/241 ,  H04W52/245 ,  H04W52/247 ,  H04W52/26 ,  H04W52/262 ,  H04W52/322 ,  H04W52/325 ,  H04W52/343 ,  H04W52/346 ,  H04W52/36 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60 ,  Y02D10/14

Abstract: A subscriber unit for use in a multiple access spread-spectrum communication system includes a spread spectrum radio interface, responsive to a rate function signal from a base station, and first and second despreaders. The base station assigns the rate function spread-spectrum message channels and the first despreader recovers and modifies an information signal one of the spread spectrum message channels. The information channel mode is then modified for processing by the second despreader, with the second despreader supporting a different information signal rate. The subscriber unit has a capability of communicating with a dynamically changing a transmission rate of an information signal which includes multiple spread spectrum message channels. The system includes a closed loop power control system for maintaining a minimum system transmit power level for a radio carrier station and the subscriber units, and system capacity management for maintaining a maximum number of active subscriber units for improved system performance.

Abstract translation: 用于多址扩频通信系统的用户单元包括响应于来自基站的速率函数信号的扩频无线电接口以及第一和第二解扩器。 基站分配速率函数扩频消息信道，第一解扩器恢复扩频信息信道之一的信息信号。 然后，信息信道模式被修改用于由第二解扩器进行处理，第二解扩器支持不同的信息信号速率。 用户单元具有与动态地改变包括多个扩频消息信道的信息信号的传输速率进行通信的能力。 该系统包括用于维持无线电载波台和用户单元的最小系统发射功率电平的闭环功率控制系统和用于维持最大数量的活动用户单元以提高系统性能的系统容量管理。

公开(公告)号：US07953140B2

公开(公告)日：2011-05-31

申请号：US11857139

申请日：2007-09-18

Applicant: Severine Catreux ,  Ian Riphagen

Inventor： Severine Catreux ,  Ian Riphagen

IPC: H04B1/00

CPC classification number: H04B1/712 ,  H04B2201/70701 ,  H04B2201/7071

Abstract: A method to process DP bits from multiple fingers within a WCDMA rake receiver is provided. DPCH pilot symbols are received, quantized and channel compensated. Then processing operations for individual fingers for the channel compensated quantized despread DPCH pilot symbols are chosen based on the DPCH slot format. The DPCH pilot symbols are processed based on the DPCH slot format in order to produce processed DPCH pilot symbols in a common format. These processed symbols may then be combined. Other embodiments may further allow for the computation of an SNR estimate based on the combined DPCH pilot symbols.

Abstract translation: 提供了一种在WCDMA耙式接收机内处理来自多个手指的DP位的方法。 DPCH导频符号被接收，量化和信道补偿。 然后，基于DPCH时隙格式来选择用于信道补偿的量化的解扩DPCH导频符号的各个手指的处理操作。 基于DPCH时隙格式处理DPCH导频符号，以便以公共格式产生经处理的DPCH导频符号。 然后可以组合这些处理后的符号。 其他实施例还可以允许基于组合的DPCH导频符号来计算SNR估计。

公开(公告)号：US07873328B2

公开(公告)日：2011-01-18

申请号：US12116262

申请日：2008-05-07

Applicant: Fatih M. Ozluturk ,  Gary R. Lomp

Inventor： Fatih M. Ozluturk ,  Gary R. Lomp

IPC: H04B7/216 ,  H04B7/00 ,  H04B1/00

CPC classification number: H04W52/36 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B7/2628 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/7071 ,  H04W52/367 ,  H04W52/50 ,  H04W52/60

Abstract: A base station for controlling transmission power during the establishment of a communication channel utilizes the reception of a short code during initial power ramp-up. The short code is a sequence for detection by the base station which has a much shorter period than a conventional access code. The ramp-up starts from a power level that is lower than the required power level for detection by the base station. The power of the short code is quickly increased until the signal is detected by the base station. Once the base station detects the short code, it transmits an indication that the short code has been detected.

Abstract translation: 在建立通信信道期间用于控制发送功率的基站在初始功率提升期间利用短码的接收。 短代码是用于基站检测的序列，其具有比常规访问码短得多的周期。 斜坡上升从低于基站检测所需功率电平的功率电平开始。 短码的功率快速增加，直到基站检测到信号。 一旦基站检测到短码，它就会发送一个指示已经检测到短码。

公开(公告)号：US07848217B2

公开(公告)日：2010-12-07

申请号：US11378663

申请日：2006-03-17

Applicant: Christian Stahlberg ,  Per-Ludvig Normark

Inventor： Christian Stahlberg ,  Per-Ludvig Normark

IPC: H04J11/00

CPC classification number: H04L65/607 ,  H04B1/707 ,  H04B1/7077 ,  H04B1/7095 ,  H04B2201/7071 ,  H04B2201/70715

Abstract: A software correlator comprising: a partitioning module adapted to divide a number of the received data samples into a first number of data blocks; a first correlation module adapted to correlate each of the data blocks with a respective local code replica segment to produce a first number of intermediate accumulation results; an aggregation module adapted to combine a number of consecutive results of the intermediate accumulation results into a target number of aggregated accumulation results, the target number expresses a number of discrete carrier values in a carrier vector that represents a Doppler shift of the at least one spread spectrum source signal relative to a downconverting frequency for this signal; and a second correlation module adapted to correlate the aggregated accumulation results with the carrier vector to produce the decoded signal, which is compensated for the Doppler shift relative to the downconverting frequency.

Abstract translation: 一种软件相关器，包括：划分模块，适于将多个所接收的数据样本分成第一数量的数据块; 第一相关模块，适于将每个数据块与相应的本地代码副本段相关联，以产生第一数量的中间累积结果; 聚合模块，其适于将所述中间累积结果的多个连续结果组合成目标数量的聚合累积结果，所述目标数量表示载波矢量中的多个离散载波值，所述载波矢量表示所述至少一个扩频 频谱源信号相对于该信号的下变频频率; 以及第二相关模块，其适于将所述聚合累积结果与所述载波矢量相关联，以产生所述解码信号，所述解码信号相对于所述下变频器被补偿多普勒频移。

公开(公告)号：US20100227624A1

公开(公告)日：2010-09-09

申请号：US12701456

申请日：2010-02-05

Applicant: Andrea De Pasquale ,  Francisco Javier Dominguez Romero ,  Beatriz Garriga

Inventor： Andrea De Pasquale ,  Francisco Javier Dominguez Romero ,  Beatriz Garriga

IPC: H04W72/08

CPC classification number: H04B1/7107 ,  H04B2201/7071

Abstract: A method of managing baseband resources in a mobile communications network, wherein at least one interference cancellation technique in uplink is available, the method comprising the steps of: when baseband resources are demanded by a mobile user, determining whether there are free baseband resources or not, and: if there are not free baseband resources, determining whether there is at least one interference cancellation process cancelling the interference caused by at least one mobile user or not, and: if there is at least one interference cancellation process cancelling the interference caused by at least one mobile user, one mobile user is removed from said interference cancellation process.

Abstract translation: 一种在移动通信网络中管理基带资源的方法，其中上行链路中的至少一个干扰消除技术是可用的，所述方法包括以下步骤：当移动用户要求基带资源时，确定是否存在空闲的基带资源 以及：如果不存在空闲的基带资源，则确定是否存在至少一个干扰消除处理，以消除由至少一个移动用户造成的干扰，以及：如果存在至少一个干扰消除处理消除由 至少一个移动用户，一个移动用户被从所述干扰消除处理中去除。

公开(公告)号：US07756085B2

公开(公告)日：2010-07-13

申请号：US10160874

申请日：2002-05-31

Applicant: Daisuke Terasawa ,  Deepu John ,  Hao Liu ,  Qiuzhen (Joe) Zou ,  Sivarama Krishnan Venkatesan

Inventor： Daisuke Terasawa ,  Deepu John ,  Hao Liu ,  Qiuzhen (Joe) Zou ,  Sivarama Krishnan Venkatesan

IPC: H04B7/216

CPC classification number: H04B1/70735 ,  H04B2201/70707 ,  H04B2201/7071

Abstract: Techniques for efficient searching in asynchronous systems, such as W-CDMA, as well as multi-mode searching, are disclosed. In one aspect, step one and step three search are performed in a single search engine. In another aspect, a search engine is configurable to search the offsets of a slot in step one search, producing sequential hypothesis energies, and peak detecting and sorting those energies. In yet another aspect, the peak detector and sorter are configurable to perform step one searching or step three/multimode searching. Various other aspects of the invention are also presented. These aspects have the benefit of circuit area and search-time efficiency which translate into reduced costs, increased standby time, increased acquisition speed, higher quality signal transmission, increased data throughput, decreased power, and improved overall system capacity.

Abstract translation: 公开了用于在诸如W-CDMA的异步系统中进行有效搜索的技术以及多模式搜索。 在一个方面，在单个搜索引擎中执行步骤1和步骤3搜索。 在另一方面，搜索引擎可配置为在步骤一搜索中搜索时隙的偏移量，产生顺序假设能量，以及峰值检测和排序这些能量。 在另一方面，峰值检测器和分类器可配置为执行步骤一搜索或步骤三/多模式搜索。 还提出了本发明的各种其它方面。 这些方面具有电路面积和搜索时间效率的优点，从而降低了成本，增加了待机时间，提高了采集速度，提高了信号传输质量，提高了数据吞吐量，降低了功耗，提高了整体系统容量。

公开(公告)号：US07680176B2

公开(公告)日：2010-03-16

申请号：US11412543

申请日：2006-04-27

Applicant: Bengt Lindoff ,  Bo Bernhardsson ,  Jonas Ohlsson

Inventor： Bengt Lindoff ,  Bo Bernhardsson ,  Jonas Ohlsson

IPC: H04B1/69

CPC classification number: H04B1/712 ,  H04B2201/7071 ,  H04B2201/709727

Abstract: According to a method and apparatus taught herein, a Rake receiver circuit selectively operates with or without colored interference compensation, in dependence on current operating conditions. For example, in one embodiment the Rake receiver circuit comprises one or more processing circuits that are configured to generate Rake combining weights in a first mode of operation as first combining weights calculated from channel estimates corresponding to a set of Rake signal fingers. In a second mode, the processing circuit(s) generate the Rake combining weights as compensated combining weights obtained by compensating the first combining weights with second combining weights calculated from colored interference estimates corresponding to a set of Rake probing fingers.

Abstract translation: 根据本文教导的方法和装置，Rake接收器电路根据当前的操作条件选择性地在有或没有有色干涉补偿的情况下操作。 例如，在一个实施例中，Rake接收机电路包括一个或多个处理电路，其被配置为以第一操作模式生成Rake组合权重作为从对应于一组Rake信号指的信道估计计算的第一组合权重。 在第二模式中，处理电路产生Rake组合权重作为通过用对应于一组耙探测手指的有色干涉估计计算的第二组合权重来补偿第一组合权重而获得的补偿组合权重。

公开(公告)号：US07675887B2

公开(公告)日：2010-03-09

申请号：US11391176

申请日：2006-03-29

Applicant: Koya Hoshina

Inventor： Koya Hoshina

IPC: H04B7/216

CPC classification number: H04W88/08 ,  H04B1/707 ,  H04B2201/70705 ,  H04B2201/7071

Abstract: On the basis of a spreading factor obtained by despreading a control channel of received data by a control channel despreading unit, a spreading factor determination unit determines a transmission rate of the received data. User data subjected to despreading processing at a user data despreading unit is demodulated by a demodulator and temporarily stored in a demodulated data memory. The user data read from the demodulated data memory is decoded by a decoder, whereas the result of decoding by the decoder is supplied to a delay measurement unit, where a delay time relative to the above processing, of the user data is detected. A channel resource management unit manages the number of available resources at all times or in a constant cycle on the basis of transmission rates of respective radio channels detected by the spreading factor determination unit and delay processing times of the respective radio channels detected by the delay measurement unit.

Abstract translation: 扩展因子确定单元基于通过控制信道解扩单元解扩接收数据的控制信道而获得的扩频因子，确定接收数据的传输速率。 用户数据解扩单元进行解扩处理的用户数据由解调器解调，并临时存储在解调数据存储器中。 从解调数据存储器读取的用户数据由解码器解码，而由解码器解码的结果被提供给延迟测量单元，其中检测到用户数据相对于上述处理的延迟时间。 信道资源管理单元根据由扩展因子确定单元检测到的各个无线电信道的传输速率和由延迟测量检测到的各个无线电信道的延迟处理时间，在所有时间或恒定周期内管理可用资源的数量 单元。

公开(公告)号：US20100008405A1

公开(公告)日：2010-01-14

申请号：US12373984

申请日：2007-07-24

Applicant: Cyril Valadon

Inventor： Cyril Valadon

IPC: H04B1/00

CPC classification number: H04L25/0224 ,  H04B1/7115 ,  H04B2201/7071 ,  H04L25/03114

Abstract: A method of ameliorating channel effects present in a signal received through a channel, wherein the signal conveys at least first and second information streams and the method comprises the steps of determining from the first stream activation of the second stream and processing the signal to ameliorate channel effects, when the second stream is present, in a first manner comprising filtering the signal through filter means to ameliorate channel dispersion and then processing the signal through Rake receiver means or, when the second stream is absent, in a second manner comprising processing the signal through the Rake receiver means without prior amelioration of channel dispersion by the filter means.

Abstract translation: 一种改善存在于通过信道接收的信号中的信道效应的方法，其中所述信号至少传送第一和第二信息流，并且所述方法包括以下步骤：从所述第一流确定所述第二流的激活并处理所述信号以改善信道 当第二流存在时，包括通过滤波器装置对信号进行滤波以改善信道色散，然后通过Rake接收机装置处理该信号，或者当第二个流不存在时，以第二种方式处理该信号 通过耙式接收机装置，无需通过滤波器装置预先改善信道色散。