公开(公告)号：US20040264560A1

公开(公告)日：2004-12-30

申请号：US10757633

申请日：2004-01-14

Applicant: InterDigital Technology Corporation

Inventor： Alpaslan Demir ,  Leonid Kazekevich ,  Tanbir Haque

IPC: H04L001/00

CPC classification number: H04L27/0014 ,  H04L2027/0016 ,  H04L2027/0024

Abstract: A digital baseband (DBB) radio frequency (RF) receiver used for receiving and processing a wireless communication signal. The DBB RF receiver includes a demodulator, an analog to digital converter (ADC) and a digital cross-talk compensation module. The demodulator outputs analog real and imaginary signal components on real and imaginary signal paths, respectively, in response to receiving the communication signal. The ADC receives the analog real and imaginary signal components and outputs respective digital real and imaginary signal components. The digital cross-talk compensation module receives the digital real and imaginary signal components, estimates the cross-talk interference caused by each of the signal components, and outputs digital real and imaginary cross-talk compensated signal components.

公开(公告)号：US20040252782A1

公开(公告)日：2004-12-16

申请号：US10739844

申请日：2003-12-18

Applicant: InterDigital Technology Corporation

Inventor： Alpaslan Demir ,  Leonid Kazakevich ,  Tanbir Haque

IPC: H04K001/02

CPC classification number: H04B1/30 ,  H03C3/406 ,  H04L2027/0016 ,  H04L2027/0018

Abstract: A method and system for determining at least one DC offset compensation value used to suppress carrier leakage occurring on real and imaginary signal paths in an analog radio transmitter when a significant temperature change in the transmitter is detected. At least one DC offset signal having a level that corresponds to the at least one DC offset compensation value is provided to a digital DC offset compensation module which adjusts the DC level of at least one of the real and imaginary signal paths.

Abstract translation: 一种用于在检测到发射机中的明显的温度变化时，确定至少一个DC偏移补偿值用于抑制在模拟无线电发射机的实信号路径和虚信号路径上发生的载波泄漏的方法和系统。 具有对应于至少一个DC偏移补偿值的电平的至少一个DC偏移信号被提供给数字DC偏移补偿模块，其调整实信号路径和虚信号路径中的至少一个的DC电平。

公开(公告)号：US20040125788A1

公开(公告)日：2004-07-01

申请号：US10660842

申请日：2003-09-12

Applicant: InterDigital Technology Corporation

Inventor： Philip J. Pietraski ,  Alpaslan Demir ,  Donald M. Grieco

IPC: H04J003/06

CPC classification number: H04B1/70735 ,  H04B1/70755 ,  H04B1/7083 ,  H04B1/709 ,  H04B1/7103 ,  H04B2201/70707

Abstract: The invention provides embodiments to facilitate cell search. In one embodiment, received samples are split into a plurality of sample sets for processing. Each of the sets is processed and an accumulated result is divided by an estimated noise value. In another embodiment, a code correlator correlates the received signal with a primary synchronization code and an auxiliary code correlator having a same length as the code correlator correlates the received signal with a code having a low cross correlation with the primary synchronization code. In another embodiment, a division of an accumulated result with a noise estimate is performed using indexes of the most significant bits.

Abstract translation: 本发明提供了便于小区搜索的实施例。 在一个实施例中，将接收到的样本分成多个样本集进行处理。 处理每个集合，并将累积结果除以估计的噪声值。 在另一个实施例中，码相关器将接收的信号与主同步码相关，并且与码相关器具有相同长度的辅助码相关器将接收的信号与与主同步码具有低互相关的代码相关。 在另一个实施例中，使用最高有效位的索引来执行累积结果与噪声估计的分割。

公开(公告)号：US20040252785A1

公开(公告)日：2004-12-16

申请号：US10749025

申请日：2003-12-30

Applicant: InterDigital Technology Corporation

Inventor： Alpaslan Demir ,  Leonid Kazakevich ,  Geetha Lakshmi Narayan

IPC: H04K001/02

CPC classification number: H04W52/52 ,  H03F1/3247 ,  H03F1/3294 ,  H04W52/08 ,  H04W52/226

Abstract: A method and system for adjusting the amplitude and phase characteristics of wireless communication signals generated by an analog radio transmitter, based on transmit power control (TPC) signals received by a base station (BS) and known characteristics of a power amplifier (PA) included in the transmitter. A digital pre-distortion compensation module, having real and imaginary signal paths, receives and processes real and imaginary signal components used to generate the wireless communication signal. The phase and amplitude characteristics of the wireless communication signal are controlled in response to the TPC signals, such that impaired amplitude and phase characteristics of the PA are corrected.

Abstract translation: 一种用于基于由基站（BS）接收的发射功率控制（TPC）信号和包括功率放大器（PA）的已知特性来调整由模拟无线电发射机产生的无线通信信号的幅度和相位特性的方法和系统 在发射机。 具有实信号路径和虚信号的数字预失真补偿模块接收并处理用于产生无线通信信号的实信号和虚信号分量。 响应于TPC信号来控制无线通信信号的相位和振幅特性，从而校正PA的幅度和相位特性受损。

公开(公告)号：US20040248516A1

公开(公告)日：2004-12-09

申请号：US10736294

申请日：2003-12-15

Applicant: InterDigital Technology Corporation

Inventor： Alpaslan Demir ,  Leonid Kazakevich ,  Kenneth P. Kearney

IPC: H04B015/00

CPC classification number: H04B1/0475 ,  H03F1/3241 ,  H03F1/3294 ,  H03F1/34 ,  H03F3/24 ,  H03F2200/462 ,  H03F2200/465 ,  H03F2200/468 ,  H04B2001/0425 ,  H04B2001/0433

Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component tolerances of an analog radio, a wireless communication transmitter employs a control process to implement numerous digital signal processing (DSP) techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. By monitoring a plurality of parameters associated with the analog radio, such as temperature, bias current or the like, enhanced phase and amplitude compensation, as well as many other radio frequency (RF) parameters may be implemented.

Abstract translation: 为了补偿由模拟无线电的低成本模拟无线电组件公差的劣化引起的性能下降，无线通信发射机采用控制过程来实现许多数字信号处理（DSP）技术来补偿这种模拟组件的缺陷，使得 现代规格可能放松。 通过监视与诸如温度，偏置电流等的模拟无线电相关联的多个参数，可以实现增强的相位和幅度补偿以及许多其它射频（RF）参数。

公开(公告)号：US20040162104A1

公开(公告)日：2004-08-19

申请号：US10713613

申请日：2003-11-14

Applicant: InterDigital Technology Corporation

Inventor： Fatih Ozluturk ,  Leonid Kazakevich ,  Kenneth P. Kearney ,  Geetha Lakshmi Narayan ,  Alpaslan Demir ,  Tanbir Haque

IPC: H04B001/40 ,  H04B017/00 ,  H04B001/06 ,  H04B007/00

CPC classification number: H03G3/001 ,  H03D3/008 ,  H03D3/009 ,  H03G3/3068 ,  H03G3/3089 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307 ,  H03G2201/508 ,  H04B1/30 ,  H04L2027/0016 ,  H04L2027/0024

Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component tolerances of an analog radio, a future system architecture (FSA) wireless communication transceiver employs numerous digital signal processing (DSP) techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. Automatic gain control (AGC) functions are provided in the digital domain, so as to provide enhanced phase and amplitude compensation, as well as many other radio frequency (RF) parameters.

Abstract translation: 为了补偿由模拟无线电的低成本模拟无线电组件公差引起的性能下降，未来的系统架构（FSA）无线通信收发器采用多种数字信号处理（DSP）技术来补偿这种模拟组件的缺陷， 现代规格可能放宽。 在数字域中提供自动增益控制（AGC）功能，以提供增强的相位和幅度补偿以及许多其他射频（RF）参数。

公开(公告)号：US20020146041A1

公开(公告)日：2002-10-10

申请号：US10120735

申请日：2002-04-11

Applicant: InterDigital Technology Corporation

Inventor： Alpaslan Demir ,  Donald M. Grieco

IPC: H04J003/06

CPC classification number: H04W56/00 ,  H04B1/7083 ,  H04J3/0608 ,  H04J11/0069 ,  H04W48/16

Abstract: The present invention is a user equipment (UE) comprising a system for establishing a communication link. The system includes a first, second and third module and a controller. The first module first processes a communication signal and generates an index value associated with a primary synchronization code within the communication signal. The second module second processes the communication signal in response to the index value and a peak sample extracted from the first module and retrieves a code group number, slot offset and secondary synchronization code. The third module third processes the communication signal and retrieves a primary scrambling code in response to the code group number and the slot offset. The controller, which is coupled to the first, second and third modules, controls the adjustment of a search frequency of the UE to retrieve the primary scrambling code in the communication signal.

Abstract translation: 本发明是一种包括用于建立通信链路的系统的用户设备（UE）。 该系统包括第一，第二和第三模块和控制器。 第一模块首先处理通信信号并产生与通信信号内的主同步码相关联的索引值。 第二模块第二处理响应于索引值的通信信号和从第一模块提取的峰值样本，并且检索代码组编号，时隙偏移和辅助同步代码。 第三模块第三处理通信信号并响应于码组号和时隙偏移检索主扰码。 耦合到第一，第二和第三模块的控制器控制UE的搜索频率的调整以检索通信信号中的主扰码。