公开(公告)号：US06693955B1

公开(公告)日：2004-02-17

申请号：US09645568

申请日：2000-08-25

Applicant: Kazuhiro Arimitsu

Inventor： Kazuhiro Arimitsu

IPC: H04B7216

CPC classification number: H04B1/708 ,  H04B1/70757 ,  H04B1/709 ,  H04B2201/70703

Abstract: A portable terminal has a level detect or which compares profile data generated by a profile generator with a threshold value, and determines a sampling rate for a correlating process performed by a correlator based on the result of the comparison. The sampling rate is determined in order to increase the sampling rate at profile points in excess of the threshold value, of the profile data. Therefore, profile data is generated highly accurately at a higher sampling clock rate at points which require a higher accuracy, and profile data is generated at a lower sampling clock rate at points which do not require such a higher accuracy.

Abstract translation: 便携式终端具有电平检测或者将由简档生成器生成的简档数据与阈值进行比较，并且基于比较结果确定由相关器执行的相关处理的采样率。 确定采样率，以便在轮廓数据的轮廓点上增加超过阈值的采样率。 因此，在需要更高精度的点处，在更高的采样时钟速率下高精度地生成轮廓数据，并且在不需要更高精度的点处以更低的采样时钟速率生成轮廓数据。

公开(公告)号：US06683907B2

公开(公告)日：2004-01-27

申请号：US10136997

申请日：2002-04-30

Applicant: Fuyun Ling

Inventor： Fuyun Ling

IPC: H04B1707

CPC classification number: H04B1/7115 ,  H04B2201/70703 ,  H04L25/0214

Abstract: Apparatus for a transmitter and a receiver which enhance the performance of a system coherent demodulation by utilizing non-pilot sub-channels to enhance the accuracy of estimates of amplitude and phase noise inherent in the transmission channel is described. This enhancement is accomplished by utilizing the corrected received data on a fundamental channel to enhance a pilot channel estimate, which is subsequently utilized by a dot product module in demodulating a supplementary data channel.

Abstract translation: 描述了用于通过利用非导频子信道来提高传输信道固有的幅度和相位噪声的估计精度来增强系统相干解调性能的发射机和接收机的装置。 该增强通过利用基本信道上的校正的接收数据来增强导频信道估计来实现，该导频信道估计随后由点积模块在解调辅助数据信道中使用。

公开(公告)号：US06678260B2

公开(公告)日：2004-01-13

申请号：US09997621

申请日：2001-11-29

Applicant: James A. Proctor, Jr.

Inventor： James A. Proctor, Jr.

IPC: H04B7216

CPC classification number: H04B7/2628 ,  H04B1/7075 ,  H04B1/70754 ,  H04B2001/70706 ,  H04B2201/70703 ,  H04B2201/70709 ,  H04B2201/70715 ,  H04J13/0022 ,  H04J13/004 ,  H04J13/16 ,  H04J13/18 ,  H04L1/0007 ,  H04L1/165 ,  H04L1/1809 ,  H04L7/06 ,  H04L25/14 ,  H04L27/2601 ,  H04Q11/0428 ,  H04Q2213/13098 ,  H04Q2213/13202 ,  H04Q2213/13204 ,  H04Q2213/13209 ,  H04Q2213/13216 ,  H04Q2213/1327 ,  H04Q2213/13298 ,  H04Q2213/13332 ,  H04Q2213/1336 ,  H04Q2213/13389 ,  H04W24/00 ,  H04W28/20 ,  H04W28/22 ,  H04W56/00 ,  H04W56/0045 ,  H04W56/0075 ,  H04W72/0413 ,  H04W72/044 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/0466 ,  H04W74/00 ,  H04W74/04 ,  H04W76/28 ,  H04W84/14

Abstract: A service option overlay for a CDMA wireless communication in which multiple allocatable subchannels are defined on a reverse link by assigning different code phases of a given long pseudonoise (PN) code to each subchannel. The instantaneous bandwidth needs of each on-line subscriber unit are then met by dynamically allocating none, one, or multiple subchannels on an as needed basis for each network layer connection. The system efficiently provides a relatively large number of virtual physical connections between the subscriber units and the base stations on the reverse link for extended idle periods such as when computers connected to the subscriber units are powered on, but not presently actively sending or receiving data. These maintenance subchannels permit the base station and the subscriber units to remain in phase and time synchronism in an idle mode and also request additional channels. This in turn allows fast acquisition of additional subchannels as needed by allocating new code phase subchannels. Preferably, the code phases of the new channels are assigned according to a predetermined code phase relationship with respect to the code phase of the corresponding maintenance subchannel.

公开(公告)号：US06674788B2

公开(公告)日：2004-01-06

申请号：US10083846

申请日：2002-02-27

Applicant: Gary Lomp ,  Fatih Ozluturk ,  John Kowalski

Inventor： Gary Lomp ,  Fatih Ozluturk ,  John Kowalski

IPC: H04B169

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 method and apparatus for communication data signal blocking for a base radio control station (RCS) which wirelessly communicates with subscriber units (SUs) via a spread spectrum communication system is disclosed. A transmitter sends signals as a baseband combined signal over global and assigned channels to SUs. The SUs are set to initial power levels and the power levels are adjusted in advance of receiving signals on assigned channels. The power levels are combined to define an RCS transmitter power level, which is preferably a root mean square value of the baseband combined signal. The transmission power levels are adjusted in response to corresponding power control signals received from the SUs. Transmission of a new communication data signal on an assigned channel is blocked if a predetermined RCS transmitter power level limit is reached before commencing transmission of that signal.

Abstract translation: 公开了一种用于通过扩频通信系统与用户单元（SU）无线通信的基站无线电控制站（RCS）的通信数据信号阻塞的方法和装置。 发射机通过全局和分配的信道将信号作为基带组合信号发送到SU。 SU设置为初始功率电平，并且在分配的信道上接收信号之前调整功率电平。 功率电平被组合以定义RCS发射机功率电平，其优选地是基带组合信号的均方根值。 响应于从SU接收到的相应功率控制信号来调整发射功率电平。 如果在开始发送该信号之前达到预定的RCS发射机功率电平限制，则在所分配的信道上传输新的通信数据信号被阻止。

公开(公告)号：US20030219065A1

公开(公告)日：2003-11-27

申请号：US10154108

申请日：2002-05-22

Applicant: InterDigital Technology Corporation

Inventor： Ariela Zeira

IPC: H04B001/69

CPC classification number: H04J13/0044 ,  H04B1/707 ,  H04B1/7105 ,  H04B2201/70703

Abstract: One aspect of the invention simultaneously estimates data transmitted in a spread spectrum communication system using different spreading factors. A plurality of communication signals are received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The transmitted data is estimated as estimated symbols using codes of a uniform spreading factor. For data transmitted with a spreading factor other than the uniform spreading factor, the estimated symbols of that data is converted to symbols of the code of that data. Another aspect of the invention receives a spread spectrum communication signal having data spread using a plurality of spreading factors. The data of the communication is estimated as estimated symbols using codes of a uniform spreading factor. The estimated symbols are parsed into parcels, where the estimated symbols correspond to data transmitted with a same spreading factor. For parcels not of the uniform spreading factor, the estimated symbols are converted into symbols of the same spreading factor of that parcel.

Abstract translation: 本发明的一个方面同时估计在扩展频谱通信系统中使用不同扩展因子传输的数据。 接收多个通信信号。 每个通信信号具有相关代码。 至少两个通信信号具有不同的扩展因子。 使用均匀扩展因子的代码将发送的数据估计为估计符号。 对于以均匀扩展因子以外的扩频因子发送的数据，将该数据的估计符号转换为该数据的码的符号。 本发明的另一方面接收使用多个扩频因子具有数据扩展的扩展频谱通信信号。 使用均匀扩展因子的代码将通信的数据估计为估计符号。 估计的符号被解析成宗地，其中估计的符号对应于以相同扩展因子传输的数据。 对于不是均匀扩展因子的包裹，将估计符号转换为该包裹相同扩展因子的符号。

公开(公告)号：US20030210757A1

公开(公告)日：2003-11-13

申请号：US10441592

申请日：2003-05-19

Inventor： Tao Chen ,  Yu-Chuan Lin

IPC: H04L007/00

CPC classification number: H04B1/707 ,  H04B2201/70703 ,  H04L2027/0055 ,  H04L2027/0093

Abstract: The present invention is a novel and improved method and system for performing the pilot frequency tracking operation for coherent demodulation in a system employing a gated pilot signal. In particular, the present invention describes a method and apparatus in which two frequency tracking loops operate in parallel. The first frequency tracking loop performs its tracking operation based on the hypothesis that the received pilot is continuous throughout the frame's duration. The second frequency tracking loop performs the tracking operation based on the hypothesis that the received pilot is discontinuous and is only present for a portion of the frame's duration.

公开(公告)号：US20030152043A1

公开(公告)日：2003-08-14

申请号：US10274806

申请日：2002-10-21

Applicant: IPWIRELESS, INC.

Inventor： Steven Nicholas Geers

IPC: H04Q007/00

CPC classification number: H04L1/0056 ,  H04B7/2618 ,  H04B2201/70703 ,  H04L1/0041 ,  H04L1/0052 ,  H04L1/0071

Abstract: A method and arrangement for processing of CCTrCH data in a UMTS system, by: receiving CCTrCH data across a plurality of radio frames and timeslots (310); storing the received CCTrCH data (320); and upon receipt of complete data for a CCTrCH, processing the stored CCTrCH data through channel processing asynchronously to the received timeslot structure (360). Preferably, the received CCTrCH data is stored in a single RAM memory in link-list form, whereby each timeslot of received CCTrCH data can be independently accessed in the memory. This method of buffering the different parts of the received CCTrCH data, so that they can be recombined before the TrCH decoding and de-multiplexing, is both memory efficient and spreads out the processing load over time.

Abstract translation: 一种通过以下方式处理UMTS系统中的CCTrCH数据的方法和装置：通过跨越多个无线电帧和时隙（310）接收CCTrCH数据; 存储所接收的CCTrCH数据（320）; 并且在接收到CCTrCH的完整数据时，通过与所接收的时隙结构异步的信道处理来处理所存储的CCTrCH数据（360）。 优选地，接收的CCTrCH数据以链路列表形式存储在单个RAM存储器中，由此可以在存储器中独立地访问所接收的CCTrCH数据的每个时隙。 这种缓存接收到的CCTrCH数据的不同部分的方法，使得它们可以在TrCH解码和解复用之前被重新组合，既是存储器有效的并且随时间扩展处理负载。

公开(公告)号：US06574204B1

公开(公告)日：2003-06-03

申请号：US09273765

申请日：1999-03-22

Applicant: Young Jo Lee

Inventor： Young Jo Lee

IPC: H04B7216

CPC classification number: H04B1/71072 ,  H04B2201/70703

Abstract: A method of canceling interference components included in received signals of a base station in a mobile communication system, despreads user data in the order of user data grouped for the unit of transmission rate and sequentially cancels user data which are the same as despread user data by allowing the base station to know transmission rate and user codes of user data transmitted from respective terminals, in case that the respective terminals transmit various user data which require various transmission rates in the mobile communication system of CDMA type. The method includes the steps of correlating user data in parallel using high transmission rate of data and user codes of respective terminals by receiving the user data transmitted from the respective terminals in the base station, the transmission rate of data and user codes of the respective terminals being in advance known by the base station, comparing the correlated resultant values with one another to decode one correlation value having one maximum value, and spreading the one correlation value having the maximum value using the user codes and subtracting user data obtained during spreading step from input user data.

Abstract translation: 一种消除移动通信系统中的基站的接收信号中包含的干扰成分的方法，按照传输速率单位分组的用户数据顺序对用户数据进行解扩，并依次取消与解扩用户数据相同的用户数据， 允许基站在CDMA类型的移动通信系统中各个终端发送需要各种传输速率的各种用户数据的情况下，知道从各个终端发送的用户数据的传输速率和用户代码。 该方法包括以下步骤：通过接收从基站中的各个终端发送的用户数据，相应终端的数据传输速率和用户代码，使用数据的高传输速率和各个终端的用户代码来并行地将用户数据相关联 由基站预先知道，将相关的结果值彼此进行比较，以解码具有一个最大值的一个相关值，并且使用用户代码扩展具有最大值的一个相关值，并且从扩展步骤中获得的用户数据减去 输入用户数据。

公开(公告)号：US20030053519A1

公开(公告)日：2003-03-20

申请号：US10263898

申请日：2002-10-02

Inventor： Klein S. Gilhousen ,  Irwin M. Jacobs ,  Roberto Padovani ,  Lindsay A. Weaver JR. ,  Charles E. Wheatley III ,  Andrew J. Viterbi

IPC: H04B001/707

CPC classification number: H04L1/0002 ,  H04B1/707 ,  H04B1/70757 ,  H04B1/7115 ,  H04B7/2618 ,  H04B7/2628 ,  H04B7/2637 ,  H04B2201/70701 ,  H04B2201/70703 ,  H04J3/02 ,  H04J3/1688 ,  H04J3/22 ,  H04J13/0022 ,  H04J13/0048 ,  H04J13/12 ,  H04L1/0071 ,  H04L1/0072 ,  H04L1/06 ,  H04L1/08 ,  H04L5/02 ,  H04L5/12 ,  H04L23/02 ,  H04W52/08 ,  H04W52/10 ,  H04W52/26

Abstract: A system and method for communicating information signals using spread spectrum communication techniques. PN sequences are constructed that provide orthogonality between the users so that mutual interference will be reduced, allowing higher capacity and better link performance. With orthogonal PN codes, the cross-correlation is zero over a predetermined time interval, resulting in no interference between the orthogonal codes, provided only that the code time frames are time aligned with each other. In an exemplary embodiment, signals are communicated between a cell-site and mobile units using direct sequence spread spectrum communication signals. In the cell-to-mobile link, pilot, sync, paging and voice channels are defined. Information communicated on the cell-to-mobile link channels are, in general, encoded, interleaved, bi-phase shift key (BPSK) modulated with orthogonal covering of each BPSK symbol along with quadrature phase shift key (QPSK) spreading of the covered symbols. In the mobile-to-cell link, access and voice channels are defined. Information communicated on the mobile-to-cell link channels are, in general, encoded, interleaved, orthogonal signaling along with QPSK spreading.

Abstract translation: 一种使用扩频通信技术传送信息信号的系统和方法。 构造PN序列，以提供用户之间的正交性，从而减少相互干扰，从而允许更高的容量和更好的链路性能。 对于正交PN码，在相关的时间间隔内，互相关为0，导致正交码之间没有干扰，只要码时间帧彼此时间对准。 在示例性实施例中，使用直接序列扩频通信信号在小区站点和移动单元之间传送信号。 在小区到移动链路中，定义了导频，同步，寻呼和语音信道。 在小区到移动链路信道上传送的信息通常是用每个BPSK符号的正交覆盖调制的编码，交织，双相移键（BPSK）以及覆盖符号的正交相移键（QPSK）扩展 。 在移动小区链路中，定义了接入和语音信道。 一般来说，在移动小区链路信道上传送的信息一起编码，交织，正交信令以及QPSK扩频。

公开(公告)号：US20030039301A1

公开(公告)日：2003-02-27

申请号：US09882190

申请日：2001-06-15

Inventor： Wayne H. Bradley

IPC: H04K001/00

CPC classification number: H04B1/707 ,  H04B2201/70703 ,  H04J13/00

Abstract: A code division multiple access (CDMA) receiver detects, de-scrambles, and de-spreads multiple channels that utilize different binary codes. The processing that is common to all channels can be performed once thus saving gate count and power consumption.

Abstract translation: 码分多址（CDMA）接收机检测，去交织和解扩多个使用不同二进制码的信道。 可以执行所有通道共同处理一次，从而节省门数和功耗。