公开(公告)号：US20040240531A1

公开(公告)日：2004-12-02

申请号：US10629157

申请日：2003-07-28

Inventor： Peter J. Black ,  Michael A. Howard

IPC: H04B001/707

CPC classification number: H04B1/7115 ,  H04B1/7117 ,  H04B2201/7071 ,  H04L1/20 ,  H04L25/03019 ,  H04L2025/03547

Abstract: Wireless communication receiver with hybrid equalizer and RAKE receiver. The receiver compares performance of the system for RAKE only and RAKE in combination with equalizer estimates. The receiver enables or disables the equalizer accordingly.

Abstract translation: 具有混合均衡器和RAKE接收机的无线通信接收机。 接收机将RAKE系统的性能与RAKE结合使用均衡器估算。 接收器相应地启用或禁用均衡器。

公开(公告)号：US06798850B1

公开(公告)日：2004-09-28

申请号：US09512377

申请日：2000-02-25

Applicant: Anders Wedin ,  Richard Hellberg

Inventor： Anders Wedin ,  Richard Hellberg

IPC: H04L2706

CPC classification number: H04B1/0014 ,  H04B1/0003 ,  H04B1/0039 ,  H04B1/28 ,  H04B1/707 ,  H04B1/7115 ,  H04B2201/70705 ,  H04B2201/7071 ,  H04L7/0029 ,  H04W88/10

Abstract: A system, method, and receiver for receiving radio signals modulated according to different radio communication standards. Radio signals are received and downconverted to an intermediate frequency (IF) signal. An A/D-converter samples the IF signal at a sampling rate and digitizes the sampled signal into a digital signal. A channelizer filters out at least two modulated channels from the digital signal. A first ago channel is modulated according to a Time Division Multiple Access (TDMA) standard, and a second channel is modulated according to a Code Division Multiple Access (CDMA) standard. A first demodulating unit demodulates the TDMA channel, and a second demodulating unit demodulates the CDMA channel. Each of the demodulating units detects and, when needed, resamples each of the modulated channels individually, and delivers a corresponding demodulated channel. A Frequency Division Multiple Access (FDMA) channel may also be received and processed.

Abstract translation: 一种用于接收根据不同无线电通信标准调制的无线电信号的系统，方法和接收机。 无线电信号被接收并下变频到中频（IF）信号。 A / D转换器以采样率对IF信号进行采样，并将采样信号数字化为数字信号。 信道化器从数字信号中滤出至少两个调制信道。 根据时分多址（TDMA）标准来调制前一个信道，并且根据码分多址（CDMA）标准调制第二信道。 第一解调单元解调TDMA信道，第二解调单元解调CDMA信道。 每个解调单元检测并且在需要时分别重新对每个调制信道进行采样，并传送相应的解调信道。 也可以接收和处理频分多址（FDMA）信道。

公开(公告)号：US06795509B1

公开(公告)日：2004-09-21

申请号：US09444413

申请日：1999-11-22

Applicant: Katsuya Yamamoto ,  Masahiko Naito

Inventor： Katsuya Yamamoto ,  Masahiko Naito

IPC: H04B702

CPC classification number: H04B1/70735 ,  H04B1/7117 ,  H04B2201/7071

Abstract: Disclosed herein is a method of receiving a spread-spectrum signal in a radio communication terminal device having a plurality of demodulators for demodulating a received spread-spectrum signal, comprising the steps of detecting when at least one of a plurality of demodulators is temporarily unable to properly demodulate the received spread-spectrum signal, determining whether or not there is a demodulator which is not being used other than the at least one of the demodulators, and continuing a demodulating process of the at least one of the demodulators, if there is a demodulator which is not being used. Thus, according to the present invention, the time in which the demodulator is unlocked is minimized, and a stable, high-quality signal can be received.

Abstract translation: 这里公开了一种在具有用于解调接收的扩频信号的多个解调器的无线电通信终端设备中接收扩频信号的方法，包括以下步骤：检测多个解调器中的至少一个暂时不能 适当地解调所接收的扩频信号，确定是否存在除了所述解调器中的至少一个以外没有被使用的解调器，并且如果存在所述解调器，则继续解调器的解调处理 解调器没有被使用。 因此，根据本发明，解调器解锁的时间被最小化，并且可以接收稳定的高质量信号。

公开(公告)号：US06788662B2

公开(公告)日：2004-09-07

申请号：US09789830

申请日：2001-02-21

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

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

IPC: H04B7216

CPC classification number: H04W52/322 ,  G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/7093 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2637 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/16 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0059 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04N1/00912 ,  H04N1/3333 ,  H04N2201/3335 ,  H04W52/08 ,  H04W52/146 ,  H04W52/24 ,  H04W52/26 ,  H04W52/325 ,  H04W52/343 ,  H04W52/36 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60

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 method for adaptive reverse power control (APC) from a subscriber unit (SU) to a base station (BS), comprises the steps of sending from the subscriber unit, using spread-spectrum modulation, a SU-spreading code on a reverse channel. The base station despreads the SU-spreading code on the reverse channel as a despread signal, determines a first power level Pd which includes power of the despread signal plus noise and a second power level PN, which includes despread-noise power. The base station determines a first error signal e1, from the first power level Pd, the second power level PN, and a required signal-to-noise ratio SNRREQ for service type, and a second error signal e2, from a measure of total received power Prt at the base station, and an automatic gain control (AGC) set point Po. The base station forms a combined error signal from the first error signal e1, the second error signal e2, a first weight a1 and a second weight a2, and hard limits the combined error signal to form a single APC bit. The APC bit is transmitted to the subscriber unit. In response to the APC bit, the subscriber adjusts transmitter power to the base station.

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。 从用户单元（SU）到基站（BS）的自适应反向功率控制（APC）的改进方法包括以下步骤：使用扩展频谱调制从用户单元发送SU扩频码 渠道。 基站将反向信道上的SU扩频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Pd和包括解扩噪声功率的第二功率电平PN。 基站从第一功率电平Pd，第二功率电平PN和用于服务类型的所需信噪比SNRREQ和第二误差信号e2根据接收到的总数量度量确定第一误差信号e1 基站的功率Prt和自动增益控制（AGC）设定点Po。 基站形成来自第一误差信号e1，第二误差信号e2，第一权重a1和第二权重a2的组合误差信号，并且硬限制组合误差信号以形成单个APC比特。 APC位被发送到用户单元。 响应于APC位，用户调整到基站的发射机功率。

公开(公告)号：US20040165654A1

公开(公告)日：2004-08-26

申请号：US10788209

申请日：2004-02-26

Applicant: InterDigital Technology Corporation

Inventor： Gary Lomp ,  Fatih Ozluturk

IPC: H04B001/707

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 spread spectrum signal having an associated code is tracked at a receiver. A plurality of components of the spread spectrum signal are despread using the associated code. Each of the plurality of components has a different code phase than all others of the plurality of code phases. Each of the plurality of components is weighted based on a phase difference between that component and a center code phase associated with the plurality of components. A tracking error is determined based on the weighted components.

Abstract translation: 具有相关代码的扩频信号在接收机处被跟踪。 使用相关代码解扩展频谱信号的多个分量。 多个组件中的每一个具有与多个代码阶段中的所有其他组件不同的代码相位。 基于该组件与与多个组件相关联的中心代码阶段之间的相位差来对多个组件中的每一个进行加权。 基于加权分量确定跟踪误差。

公开(公告)号：US20040071198A1

公开(公告)日：2004-04-15

申请号：US10680943

申请日：2003-10-08

Applicant: InterDigital Technology Corporation

Inventor： Gary Lomp ,  Fatih Ozluturk ,  Avi Silverberg

IPC: H04B001/707

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 transmitted in a wireless format is to be detected. A power level associated with the code is determined. The determined power level is compared with a plurality of thresholds. A test statistic is increased or decreased based on which of the thresholds that the determined power level falls within. If the test statistic exceeds an acceptance threshold, the code is deemed acquired. If the test statistic is below a dismissal threshold, the code is deemed not present. If the test statistic does not exceed the acceptance threshold and the test statistic is not below the dismissal threshold, the testing for the code is repeated.

Abstract translation: 要检测以无线格式发送的代码。 确定与代码相关联的功率级别。 将确定的功率电平与多个阈值进行比较。 基于所确定的功率水平在哪个阈值内增加或减少测试统计量。 如果测试统计数据超过接受阈值，则代码被视为已获得。 如果测试统计数据低于解雇阈值，则代码被视为不存在。 如果测试统计量不超过接受阈值，并且测试统计量不低于解雇阈值，则重复对代码的测试。

公开(公告)号：US20040062300A1

公开(公告)日：2004-04-01

申请号：US10659905

申请日：2003-09-11

Inventor： John G. McDonough ,  Gibong Jeong ,  Karim Abdulla ,  Rajiv R. Nambiar ,  William S. Clark JR.

IPC: H04B001/707

CPC classification number: H04B1/7077 ,  H04B1/709 ,  H04B2201/7071

Abstract: System and method for efficient detecting of direct sequence spread spectrum signals using a searcher with batched processing. A preferred embodiment comprises a controller (such as the MCU 310) that writes sets of search parameters to a memory (such as the memory 315) to specify a group of hypotheses. A searcher (such as the searcher 305) reads the sets of search parameters from the memory and generates the groups of hypotheses from the sets of search parameters. The searcher then assigns the hypotheses to correlators and tests each of the hypotheses. Results from the testing can be written back to the memory.

Abstract translation: 使用具有批处理的搜索器来有效检测直接序列扩频信号的系统和方法。 优选实施例包括将搜索参数集合写入存储器（诸如存储器315）以指定一组假设的控制器（诸如MCU 310）。 搜索器（诸如搜索器305）从存储器读取搜索参数集合，并从搜索参数集合生成假设组。 搜索者然后将假设分配给相关器并测试每个假设。 测试结果可以写回内存。

公开(公告)号：US20040047405A1

公开(公告)日：2004-03-11

申请号：US10613853

申请日：2003-07-02

Applicant: CommASIC, Inc.

Inventor： Robert W. Boesel ,  Theodore J. Myers ,  Tien Q. Nguyen

IPC: H04B001/38

CPC classification number: H04B1/712 ,  H04B1/7117 ,  H04B2201/70701 ,  H04B2201/70707 ,  H04B2201/7071

Abstract: A method of processing data based on programmed instructions includes referencing a number of locations in memory by forming addresses and correct buffer mappings corresponding to separate buffers in the plurality of buffers, and communicating data from the referenced locations in memory to a processing unit. The processing unit concurrently receives inputs from the separate buffers in the plurality of buffers and outputs to another buffer in the plurality of buffers.

Abstract translation: 一种基于编程指令处理数据的方法包括通过形成地址和对应于多个缓冲器中的单独缓冲器的校正缓冲器映射以及将数据从存储器中的参考位置传送到处理单元来引用存储器中的位置数。 处理单元同时从多个缓冲器中的单独的缓冲器接收输入，并输出到多个缓冲器中的另一缓冲器。

公开(公告)号：US20030231701A1

公开(公告)日：2003-12-18

申请号：US10392564

申请日：2003-03-20

Applicant: Agilent Technologies, Inc.

Inventor： Nico Lugil

IPC: H04K001/00

CPC classification number: H04B1/7115 ,  H04B2201/7071

Abstract: The present invention is related to a rake receiver for searching, tracking and combining multipath signals in a spread spectrum transmission, characterised in that it further comprises a plurality of generic fingers (11) arranged to perform any of functions selected from the group consisting of searching, tracking and combining a multipath signal.

Abstract translation: 本发明涉及一种用于在扩展频谱传输中搜索，跟踪和组合多路径信号的瑞克接收机，其特征在于，它还包括多个通用手指（11），其被布置成执行从包括搜索的组中选择的任何功能 ，跟踪并组合多径信号。

公开(公告)号：US20030190925A1

公开(公告)日：2003-10-09

申请号：US10401217

申请日：2003-03-26

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk ,  Gary R. Lomp

IPC: H04B007/00

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.