公开(公告)号：US06904557B2

公开(公告)日：2005-06-07

申请号：US10355324

申请日：2003-01-31

申请人： Jukka Tapaninen ,  Thomas Kenney ,  Jean-Marie Tran

发明人： Jukka Tapaninen ,  Thomas Kenney ,  Jean-Marie Tran

IPC分类号： H04L1/00 ,  H03M13/00

CPC分类号： H04L1/0059 ,  H03M13/3738 ,  H03M13/41 ,  H04L1/0046 ,  H04L1/0054 ,  H04L1/0061 ,  H04L1/0072

摘要： A method detects an absence of a transmitted frame in a wireless communications system that operates with a discontinuous transmission (DTX) protocol between a transmitter and a receiver. The method includes decoding a received signal over a frame period to determine a cumulative metric; normalizing the cumulative metric and comparing the normalized cumulative metric to a threshold for determining whether the frame was a transmitted frame or a non-transmitted frame. The determined cumulative metric may be a maximum cumulative metric or a zero state cumulative metric. The wireless communications system may be a CDMA system, the receiver may be contained within a mobile station, and the determination of whether the frame was a transmitted frame or a non-transmitted frame can be employed, as one non-limiting example, during execution of a power control algorithm.

摘要翻译： 一种方法检测在发射机和接收机之间以不连续传输（DTX）协议操作的无线通信系统中没有发送的帧。 该方法包括在帧周期上对接收到的信号进行解码以确定累积度量; 对累积度量进行归一化并将归一化累积度量与用于确定帧是发送帧还是非发送帧的阈值进行比较。 所确定的累积度量可以是最大累积度量或零状态累积度量。 无线通信系统可以是CDMA系统，接收机可以被包含在移动台内，并且在执行期间可以采用帧是发送帧还是非发送帧的确定作为一个非限制性示例 的功率控制算法。

公开(公告)号：US07430432B2

公开(公告)日：2008-09-30

申请号：US10932914

申请日：2004-09-02

申请人： Jukka Tapaninen ,  Jean-Marie Tran ,  TG Vishwanath

发明人： Jukka Tapaninen ,  Jean-Marie Tran ,  TG Vishwanath

IPC分类号： H04B7/00

CPC分类号： H04W52/243 ,  H04B17/336

摘要： Apparatus, and an associated method, for determining a carrier-to-interference ratio to be used in a closed-loop power control scheme to control power levels at which data is sent to a mobile station operable pursuant to a high-rate data communications service. A signal power level calculator calculates power levels of a pilot signal at successive power control group intervals. Calculations are made of the noise power levels, and a ratio of the values is formed. A report is generated and returned to a network part of the communication system, thereby to provide indications of the network part used to alter the power levels at which data is communicated to the mobile station.

摘要翻译： 用于确定要在闭环功率控制方案中使用的载波干扰比的装置和相关方法，以控制向根据高速率数据通信服务可操作的移动台发送数据的功率电平 。 信号功率电平计算器在连续的功率控制组间隔处计算导频信号的功率电平。 计算噪声功率电平，形成值的比值。 生成报告并返回到通信系统的网络部分，从而提供用于改变向移动台传送数据的功率电平的网络部分的指示。

公开(公告)号：US20060046660A1

公开(公告)日：2006-03-02

申请号：US10932914

申请日：2004-09-02

申请人： Jukka Tapaninen ,  Jean-Marie Tran ,  TG Vishwanath

发明人： Jukka Tapaninen ,  Jean-Marie Tran ,  TG Vishwanath

IPC分类号： H04B17/00 ,  H04B7/00

CPC分类号： H04W52/243 ,  H04B17/336

摘要： Apparatus, and an associated method, for determining a carrier-to-interference ratio to be used in a closed-loop power control scheme to control power levels at which data is sent to a mobile station operable pursuant to a high-rate data communications service. A signal power level calculator calculates power levels of a pilot signal at successive power control group intervals. Calculations are made of the noise power levels, and a ratio of the values is formed. A report is generated and returned to a network part of the communication system, thereby to provide indications of the network part used to alter the power levels at which data is communicated to the mobile station.

摘要翻译： 用于确定要在闭环功率控制方案中使用的载波干扰比的装置和相关方法，以控制向根据高速率数据通信服务可操作的移动台发送数据的功率电平 。 信号功率电平计算器在连续的功率控制组间隔处计算导频信号的功率电平。 计算噪声功率电平，形成值的比值。 生成报告并返回到通信系统的网络部分，从而提供用于改变向移动台传送数据的功率电平的网络部分的指示。

公开(公告)号：US07209483B2

公开(公告)日：2007-04-24

申请号：US10078139

申请日：2002-02-19

申请人： Jean-Marie Tran ,  Thomas Kenney

发明人： Jean-Marie Tran ,  Thomas Kenney

IPC分类号： H04L12/56 ,  H04Q7/00 ,  G06Q11/00

CPC分类号： H04L1/005 ,  H04L1/0001 ,  H04L1/16 ,  H04L1/1816 ,  H04L1/1845

摘要： Apparatus, and an associated method, for a packet radio communication system that utilizes a packet retransmission scheme. A data packet, together with a selected number of retransmissions thereof are sent to a mobile station, or other receiving station. A channel condition estimator estimates channel conditions on the communication channel and, responsive to the channel condition estimates, selection is made of the number of packet data retransmissions that are to be effectuated prior to performing decoding operations to recover the informational content of the data packet.

摘要翻译： 一种利用分组重传方案的分组无线电通信系统的装置和相关方法。 将数据分组连同其所选择的重发次数一起发送到移动台或其他接收站。 信道条件估计器估计通信信道上的信道条件，并且响应于信道条件估计，在执行解码操作以恢复数据分组的信息内容之前，选择要实现的分组数据重传的数量。

公开(公告)号：US06856646B2

公开(公告)日：2005-02-15

申请号：US10101293

申请日：2002-03-19

申请人： Nick Carbone ,  Thomas Kenney ,  Jean-Marie Tran

发明人： Nick Carbone ,  Thomas Kenney ,  Jean-Marie Tran

IPC分类号： H04B1/707 ,  H04L25/03

CPC分类号： H04B1/7117 ,  H04B1/7105 ,  H04L25/03006 ,  H04L25/03178 ,  H04L2025/03375 ,  H04L2025/03509

摘要： The present invention relates to systems and methods that facilitate compensating for intersymbol interference (e.g. due to non-nyquist filtering) in Code Division Multiple Access (CDMA) systems (e.g., IS 95 and IS2000 systems). The subject invention employs equalization filters (e.g., T-spaced equalizers) at fingers of a RAKE receiver. By effecting such equalization filtering at a downstream point in a receiving system, e.g., at the fingers of the RAKE receiver, the filters can be run so as to operate at lower rates as compared to conventional systems where filtering is effected upstream where time is not necessarily known thus requiring equalization filters to operate at significantly faster rates (e.g., 2× or 4× expected chip rate). Accordingly, as compared to conventional systems where the matching filters often are of substantial complexity (e.g., >80 taps) the present invention provides for less complex equalization filters thereby reducing overall system complexity and cost.

摘要翻译： 本发明涉及有助于在码分多址（CDMA）系统（例如，IS 95和IS2000系统）中补偿符号间干扰（例如由于非奈奎斯特滤波）的系统和方法。 本发明在RAKE接收机的手指处使用均衡滤波器（例如，T间隔均衡器）。 通过在接收系统的下游点（例如在RAKE接收机的指状物处）进行这种均衡滤波，可以运行滤波器以便以较低的速率运行，与常规系统相比，其中滤波在时间不在的上游 因此需要均衡滤波器以显着更快的速率（例如，2x或4x预期码片速率）运行。 因此，与其中匹配滤波器通常具有相当复杂性（例如，> 80个抽头）的常规系统相比，本发明提供了较不复杂的均衡滤波器，从而降低了整体系统的复杂性和成本。

公开(公告)号：US06665284B1

公开(公告)日：2003-12-16

申请号：US09629562

申请日：2000-07-31

申请人： Jean-Marie Tran ,  Thomas Kenney

发明人： Jean-Marie Tran ,  Thomas Kenney

IPC分类号： H04Q700

CPC分类号： H04W88/02 ,  H04B1/707 ,  H04B2201/70703

摘要： Apparatus, and an associated method, for a communication station, such as a mobile station operable pursuant to an IS-95/IS-2000 communication service and an HDR (High Data Rate) data communication service. The receiver part of the communication station includes first and second RF (Radio Frequency) receive portions, separately tunable to communicate pursuant to the communication services. A hard handover of communication is not required to be effectuated to receive one, or the other, of the services.

摘要翻译： 用于通信站的装置和相关方法，诸如可根据IS-95 / IS-2000通信服务和HDR（高数据速率）数据通信服务操作的移动台。 通信站的接收机部分包括第一和第二RF（射频）接收部分，可单独调节以根据通信服务进行通信。 通信的硬交接不需要被实现以接收一个或另一个服务。

公开(公告)号：US06977918B2

公开(公告)日：2005-12-20

申请号：US09896153

申请日：2001-06-29

申请人： Jean-Marie Tran ,  Thomas Kenney

发明人： Jean-Marie Tran ,  Thomas Kenney

IPC分类号： D04B1/26 ,  H04B1/707 ,  H04B1/7115 ,  H04L12/56 ,  H04W24/04 ,  H04W28/14 ,  H04J3/24

CPC分类号： H04W24/00 ,  A41B11/004 ,  A41B2400/20 ,  D04B1/26 ,  H04B1/707 ,  H04B1/7115 ,  H04B2201/70707 ,  H04W24/04 ,  H04W28/14 ,  H04W88/02

摘要： The present invention encompasses an electronic device operated in a communication system (for example 1XEV-DO, 1XEV-DV, CDMA, etc). The electronic device receiving a signal from a base station, the signal containing signaling information and data packets. The electronic device processing portion of the signal during the current frame and simultaneously storing the received signal prior to de-spreading, for further processing during the following frame. The electronic device further processing previously stored signal, during current frame.

摘要翻译： 本发明包括在通信系统（例如1XEV-DO，1XEV-DV，CDMA等）中操作的电子设备。 电子设备从基站接收信号，该信号包含信令信息和数据分组。 电子设备处理部分信号在当前帧中并同时存储接收信号在解扩前进行后续帧处理。 电子设备在当前帧期间进一步处理先前存储的信号。

公开(公告)号：US06621871B2

公开(公告)日：2003-09-16

申请号：US09822985

申请日：2001-03-30

申请人： J. A. Fergus Ross ,  Thomas J. Kenney ,  Jean-Marie Tran

发明人： J. A. Fergus Ross ,  Thomas J. Kenney ,  Jean-Marie Tran

IPC分类号： H04L512

CPC分类号： H04L1/005 ,  H04L1/0066 ,  H04L1/0068 ,  H04L1/1819

摘要： Bit probability estimates generated by a turbo decoder are employed to weight the bits of a received packet before combining the received packet with a redundant packet. Bits are individually weighted by the corresponding bit probability estimate and all bits within the received packet are weighted by a block confidence estimate generated from the cumulative bit probability estimates for the received packet. Weighted packet bits are combined within either weighted packet bits for the redundant packet or unweighted received bits for the redundant packet. The bits are combined by adding counterpart weighted (or weighted and unweighted) systematic and parity bit values within the two packets while inserting disjoint parity bit values within the combined result. Decoding performance for incremental redundancy systems utilizing turbo decoding is improved.

公开(公告)号：US06728299B2

公开(公告)日：2004-04-27

申请号：US10184445

申请日：2002-06-28

申请人： Gillyoung Jung ,  Nick Carbone ,  Jean-Marie Tran

发明人： Gillyoung Jung ,  Nick Carbone ,  Jean-Marie Tran

IPC分类号： H04B169

CPC分类号： H04W52/52 ,  H03G3/3042 ,  H04B1/707

摘要： A method, system, and computer program product for controlling amplification of an input transmit signal in a transmitter in order to operate a digital-to-analog converter such that its clipping point corresponds to a desired cumulative distribution level. The input transmit signal is coupled to a digital-to-analog converter and includes a plurality of independent spread spectrum channels. The spread spectrum channels have associated individual channel gains. The invention includes an approximating the total variance of the input transmit signal and determining an amplification gain corresponding to the desired cumulative distribution level using an amplification function dependent on the total variance of the input transmit signal.

公开(公告)号：US06463031B1

公开(公告)日：2002-10-08

申请号：US09204832

申请日：1998-12-03

申请人： Jean-Marie Tran

发明人： Jean-Marie Tran

IPC分类号： H04J322

CPC分类号： H04L1/0046 ,  H04L1/0054 ,  H04L1/08 ,  H04L25/0262

摘要： A method and apparatus, such as a radiotelephone, operates so as to (a) decode a signal received from a communications channel to extract data therefrom, the data being received at one of n rates and the signal being decoded at each of the n rates for generating n Cumulative Metrics; (b) defines a matrix M composed of n mean vectors derived from the n Cumulative Metrics; (c) orthogonalizes the n rates by inverting the matrix M and multiplying with an observable vector of Cumulative Metrics to obtain a discriminant vector; and (d) determining the correct rate from the discriminant vector as the row number having a maximum value. One or both of a fixed or an adaptive scaling can be applied to the soft data prior to Viterbi decoding, and the resulting Cumulative Metrics can be scaled again to undo the first scaling, prior to operation of the rate determination technique.

摘要翻译： 诸如无线电话的方法和装置的操作是（a）解码从通信信道接收的信号以从其中提取数据，以n个速率中的一个接收数据，并且以n个速率中的每一个速率解码该信号 用于生成n个累积指标; （b）定义由n个累积度量导出的n个平均向量组成的矩阵M; （c）通过反转矩阵M并与累积度量的可观测向量相乘以使n个速率正交化，以获得判别向量; 和（d）从判别向量确定作为具有最大值的行号的正确率。 在维特比解码之前，可以将固定或自适应缩放中的一个或两个应用于软数据，并且在速率确定技术的操作之前，可以再次缩放所得到的累积度量以撤销第一缩放。