公开(公告)号：US20040125785A1

公开(公告)日：2004-07-01

申请号：US10629434

申请日：2003-07-29

Applicant: InterDigital Technology Corporation

Inventor： Robert A. DiFazio ,  John W. Haim

IPC: H04B007/216

CPC classification number: H04B7/264 ,  H04B7/2618 ,  H04L1/0039 ,  H04L1/1671 ,  H04W52/44

Abstract: A method for performing transport format combination indicator (TFCI) processing in a wireless communications system begins by collecting received samples for a timeslot. Processing of the received samples for the timeslot that does not require a transport format combination (TFC) code list or a TFC code list valid indicator is performed. Next, a TFCI value for the timeslot is received and is processed at the timeslot rate, producing the TFC code list and the TFC code list valid indicator. Then processing in the timeslot that requires the TFC code list or the TFC code list valid indicator is performed.

Abstract translation: 在无线通信系统中执行传输格式组合指示（TFCI）处理的方法是通过收集时隙的接收样本开始的。 执行不需要传输格式组合（TFC）代码列表或TFC代码列表有效指示符的时隙的接收样本的处理。 接下来，接收时隙的TFCI值，并以时隙速率进行处理，产生TFC代码列表和TFC代码表有效指示符。 然后执行需要TFC代码列表或TFC代码列表有效指示符的时隙中的处理。

公开(公告)号：US20040196782A1

公开(公告)日：2004-10-07

申请号：US10618227

申请日：2003-07-11

Applicant: InterDigital Technology Corporation

Inventor： Jung-Lin Pan ,  John W. Haim ,  Ariela Zeira

IPC: H04J011/00

CPC classification number: H04L25/0232 ,  H04B2001/6912 ,  H04L27/103 ,  H04L27/2647

Abstract: A low cost method and system for efficiently implementing channel estimation in a wireless communication system using any desired length of a fast Fourier transform (FFT) independent of burst type or signal structure. The hardware complexity required to perform the channel estimation to process a plurality of different burst types is reduced. Simple tail zero-padding is used when the length of FFT is extended to a desired length for more efficient computation.

Abstract translation: 一种用于在无线通信系统中有效实现信道估计的低成本方法和系统，其使用独立于突发类型或信号结构的快速傅里叶变换（FFT）的任何期望长度。 减少执行信道估计以处理多个不同突发类型所需的硬件复杂度。 当FFT的长度扩展到期望的长度以便更有效的计算时，使用简单的尾部零填充。

公开(公告)号：US20040242172A1

公开(公告)日：2004-12-02

申请号：US10799951

申请日：2004-03-12

Applicant: InterDigital Technology Corporation

Inventor： John W. Haim ,  Fryderyk Tyra ,  Louis J. Guccione ,  Timothy A. Axness ,  Donald M. Grieco

IPC: H03G003/20

CPC classification number: H04W52/52 ,  H03G3/001 ,  H03G3/3052 ,  H03G3/3078

Abstract: An automatic gain control (AGC) method according to the present invention applies an initial gain by a digital AGC circuit in a timeslot is determined using a final calculated gain from the same timeslot in the previous frame together with an offset factor. An erase function is activated for a given data sample block when the number of saturated data samples that are detected within the block exceeds a threshold value. The power measurement made by the AGC circuit and used to update the gain is adjusted based on the number of measured data samples that are saturated. These elements provide a gain limiting function and allows limiting of the dynamic range for further signal processing

Abstract translation: 根据本发明的自动增益控制（AGC）方法，利用来自前一帧中的相同时隙的最终计算的增益以及偏移因子来确定时隙中的数字AGC电路的初始增益。 当在该块内检测到的饱和数据样本的数量超过阈值时，对于给定的数据采样块，擦除功能被激活。 由AGC电路进行的用于更新增益的功率测量基于饱和的测量数据样本的数量进行调整。 这些元件提供增益限制功能，并允许限制用于进一步信号处理的动态范围

公开(公告)号：US20030223398A1

公开(公告)日：2003-12-04

申请号：US10396992

申请日：2003-03-25

Applicant: InterDigital Technology Corporation

Inventor： John W. Haim ,  Hyun-Seok Oh ,  Younglok Kim ,  Ariela Zeira ,  Robert A. DiFazio

IPC: H04B007/216

CPC classification number: H04B1/70735 ,  H04B1/7105

Abstract: The present invention is a receiver which includes a blind code detection device for determining the identity of a plurality of channels over which information is to be transmitted when the identity of all channels is not known by the receiver. The blind code detection device generates a candidate channel list filled with the identify of selected channels out of the plurality of channels. A multi-user detection device, responsive to the blind code detection device, processes those channels in the candidate code list.

Abstract translation: 本发明是一种接收机，其包括盲码检测装置，用于当接收机不知道所有信道的身份时，确定要发送信息的多个信道的身份。 盲代码检测装置生成填充有多个信道中所选择的信道的标识的候选信道列表。 响应于盲代码检测设备的多用户检测设备处理候选代码列表中的那些信道。

公开(公告)号：US20020102944A1

公开(公告)日：2002-08-01

申请号：US10077449

申请日：2002-02-15

Applicant: InterDigital Technology Corporation

Inventor： John W. Haim

IPC: H04B001/00

CPC classification number: H04W52/146 ,  H04W52/08 ,  H04W52/10 ,  H04W52/12 ,  H04W52/24 ,  H04W52/241 ,  H04W52/242 ,  H04W52/265 ,  H04W52/267 ,  H04W52/362

Abstract: A system and a method of controlling transmitter power in a wireless communication system in which user data is processed as a multirate signal having a rate N(t) and in which the user data signal having rate N(t) is converted into a transmission data signal having a faster rate M(t) for transmission. The transmission power is adjusted on a relatively slow basis based on quality of data received by a receiver of the transmitted data. The transmitter power is determined as a function of N(t)/M(t) such that a change in the data rate in the multiple channels or the rate of the transmission data signal is compensated in advance of a quality of data based adjustment associated with such data rate change. Preferably, the user data signal having rate N(t) is converted into the transmission data signal having the faster rate M(t) by repeating selected data bits whereby the energy per bit to noise spectrum density ratio is increased in the transmission data signal.

Abstract translation: 一种在无线通信系统中控制发射机功率的系统和方法，其中用户数据被处理为具有速率N（t）的多速率信号，并且其中具有速率N（t）的用户数据信号被转换为传输数据 信号具有用于传输的较快速率M（t）。 基于发送数据的接收器接收的数据的质量，相对较慢地发送发送功率。 发射机功率被确定为N（t）/ M（t）的函数，使得在多个信道中的数据速率的变化或传输数据信号的速率在与基于数据的调整相关联的质量之前被补偿 随着数据速率的变化。 优选地，具有速率N（t）的用户数据信号通过重复所选择的数据位而被转换成具有更快速率M（t）的传输数据信号，由此在传输数据信号中每比特噪声频谱密度比的能量增加。

公开(公告)号：US20040248602A1

公开(公告)日：2004-12-09

申请号：US10772644

申请日：2004-02-05

Applicant: InterDigital Technology Corporation

Inventor： Alpaslan Demir ,  Donald M. Grieco ,  John W. Haim ,  Andrew F. Bednarz ,  Philip J. Pietraski ,  Louis J. Guccione ,  Prabhakar R. Chitrapu

IPC: H04B015/00

CPC classification number: H04B1/7083 ,  H04B1/70735 ,  H04B1/70755 ,  H04B1/709 ,  H04B2201/70701 ,  H04W48/16 ,  H04W56/00

Abstract: A method and system for performing initial cell search is disclosed. Step 1 processing is preformed to detect a peak primary synchronization code (PSC) location (i.e. chip offset or chip location). Step 2 processing is performed to obtain the toffset and code group. Step 3 processing is performed to identify the midamble of a base station with which the WTRU performing the initial cell search may synchronize with.

Abstract translation: 公开了一种用于执行初始小区搜索的方法和系统。 执行步骤1处理以检测峰值主同步码（PSC）位置（即码片偏移或码片位置）。 执行步骤2处理以获得折射和代码组。 执行步骤3处理以识别执行初始小区搜索的WTRU可与其同步的基站的中间码。

公开(公告)号：US20020027960A1

公开(公告)日：2002-03-07

申请号：US09904020

申请日：2001-07-12

Applicant: InterDigital Technology Corporation

Inventor： John W. Haim

IPC: H04K001/02 ,  H04L025/03 ,  H04L025/49

CPC classification number: H04W52/146 ,  H04W52/08 ,  H04W52/10 ,  H04W52/12 ,  H04W52/24 ,  H04W52/241 ,  H04W52/242 ,  H04W52/265 ,  H04W52/267 ,  H04W52/362

Abstract: A system and a method of controlling transmitter power in a wireless communication system in which user data is processed as a multirate signal having a rate N(t) and in which the user data signal having rate N(t) is converted into a transmission data signal having a faster rate M(t) for transmission. The transmission power is adjusted on a relatively slow basis based on quality of data received by a receiver of the transmitted data. The transmitter power is determined as a function of N(t)/M(t) such that a change in the data rate in the multiple channels or the rate of the transmission data signal is compensated in advance of a quality of data based adjustment associated with such data rate change. Preferably, the user data signal having rate N(t) is converted into the transmission data signal having the faster rate M(t) by repeating selected data bits whereby the energy per bit to noise spectrum density ratio is increased in the transmission data signal.

Abstract translation: 一种在无线通信系统中控制发射机功率的系统和方法，其中用户数据被处理为具有速率N（t）的多速率信号，并且其中具有速率N（t）的用户数据信号被转换为传输数据 信号具有用于传输的较快速率M（t）。 基于发送数据的接收器接收的数据的质量，相对较慢地发送发送功率。 发射机功率被确定为N（t）/ M（t）的函数，使得在多个信道中的数据速率的变化或传输数据信号的速率在与基于数据的调整相关联的质量之前被补偿 随着数据速率的变化。 优选地，具有速率N（t）的用户数据信号通过重复所选择的数据位而被转换成具有更快速率M（t）的传输数据信号，由此在传输数据信号中每比特噪声频谱密度比的能量增加。

公开(公告)号：US20020027959A1

公开(公告)日：2002-03-07

申请号：US09904001

申请日：2001-07-12

Applicant: InterDigital Technology Corporation

Inventor： John W. Haim

IPC: H04K001/02 ,  H04L025/03 ,  H04L025/49

CPC classification number: H04W52/146 ,  H04W52/08 ,  H04W52/10 ,  H04W52/12 ,  H04W52/24 ,  H04W52/241 ,  H04W52/242 ,  H04W52/265 ,  H04W52/267 ,  H04W52/362

Abstract: A system and a method of controlling transmitter power in a wireless communication system in which user data is processed as a multirate signal having a rate N(t) and in which the user data signal having rate N(t) is converted into a transmission data signal having a faster rate M(t) for transmission. The transmission power is adjusted on a relatively slow basis based on quality of data received by a receiver of the transmitted data. The transmitter power is determined as a function of N(t)/M(t) such that a change in the data rate in the multiple channels or the rate of the transmission data signal is compensated in advance of a quality of data based adjustment associated with such data rate change. Preferably, the user data signal having rate N(t) is converted into the transmission data signal having the faster rate M(t) by repeating selected data bits whereby the energy per bit to noise spectrum density ratio is increased in the transmission data signal.

公开(公告)号：US20010026540A1

公开(公告)日：2001-10-04

申请号：US09880977

申请日：2001-06-14

Applicant: InterDigital Technology Corporation, a Delaware Corporation

Inventor： John W. Haim

IPC: H04Q007/00

CPC classification number: H04W52/60 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B7/2628 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04W52/36 ,  H04W52/362 ,  H04W52/367 ,  H04W52/50

Abstract: A system and method reduces the time required by a base station to acquire a fixed subscriber unit in a CDMA communication system by virtually locating of the subscriber units. A base station acquires subscriber units by searching only those code phases concomitant with the largest propagation delay possible in the cell, as if all subscriber units were located at the periphery of the cell. A subscriber unit which has never been acquired by the base station varies the delay between the PN code phase of its received and transmitted signals over the range of possible delays in a cell and slowly ramps-up its transmission power until it is acquired by the base station. Upon initial acquisition by the base station, the subscriber unit ceases ramping-up its transmission power, ceases varying the delay and internally stores the final value of the delay in memory.

Abstract translation: 系统和方法通过虚拟地定位用户单元来减少基站在CDMA通信系统中获取固定用户单元所需的时间。 基站仅通过仅在那些小区中搜索可能的最大传播延迟的那些码相位来搜索那些码相位，好像所有的用户单元都位于小区的外围。 基站从未被采集的用户单元在单元中的可能延迟的范围内改变其接收和发送的信号的PN码相位之间的延迟，并缓慢地增大其发送功率，直到由基站 站。 在基站首次采集时，用户单元停止其发送功率的上升，停止改变延迟，并在内存中将延迟的最终值存储在存储器中。

公开(公告)号：US20040174854A1

公开(公告)日：2004-09-09

申请号：US10725808

申请日：2003-12-02

Applicant: InterDigital Technology Corporation

Inventor： Stephan Shane Supplee ,  Chayil S. Timmerman ,  Ryan Samuel Buchert ,  Peter Edward Becker ,  Tonino Nasuti ,  Robert A. DiFazio ,  John W. Haim

IPC: H04B007/216

CPC classification number: H04B1/71052 ,  H04B2201/70707

Abstract: Multi-user detection (MUD) performance is optimized to eliminate redundant use of power during processing. An overbuilt A-matrix, i.e., a system response matrix, is provided. The overbuilt A-matrix uses all possible codes, e.g., all codes identified in a candidate code list (CCL) provided by blind code detection (BCD). The overbuilt A-matrix is passed to the MUD which extracts only those rows or columns required for codes that have actually been received, thus eliminating the need to recompute whitening matched filter (WMF) outputs that do not correspond to the actually received code.

Abstract translation: 优化多用户检测（MUD）性能，以消除处理过程中冗余电源的使用。 提供了一种过度建立的A矩阵，即系统响应矩阵。 过量的A矩阵使用所有可能的代码，例如由盲代码检测（BCD）提供的候选代码表（CCL）中标识的所有代码。 过量的A矩阵被传递给仅提取实际已经接收的代码所需的行或列的MUD，从而不需要重新计算与实际接收的代码不对应的白化匹配滤波器（WMF）输出。