公开(公告)号：US20040247056A1

公开(公告)日：2004-12-09

申请号：US10736381

申请日：2003-12-15

Applicant: InterDigital Technology Corporation

Inventor： Alpaslan Demir ,  Leonid Kazakevich ,  Tanbir Haque

IPC: H04L027/08

CPC classification number: H03G3/3052

Abstract: A communication system including an amplifier, a receiver, an analog to digital converter (ADC) and an insertion phase variation compensation module. The amplifier receives a communication signal. If the amplifier is enabled, the amplifier amplifies the communication signal and outputs the amplified communication signal to the receiver. If the amplifier is disabled, the amplifier passes the communication signal to the receiver without amplifying it. The receiver outputs an analog complex signal to the ADC. The ADC outputs a digital complex signal to the insertion phase variation compensation module which counteracts the effects of a phase offset intermittently introduced into the communication signal when the amplifier is enabled or disabled.

Abstract translation: 一种包括放大器，接收器，模数转换器（ADC）和插入相位变化补偿模块的通信系统。 放大器接收通信信号。 如果放大器使能，放大器放大通信信号，并将放大的通信信号输出到接收器。 如果放大器被禁用，放大器将通信信号传递到接收器而不进行放大。 接收器向ADC输出模拟复合信号。 ADC将数字复合信号输出到插入相位变化补偿模块，该模块抵消当放大器使能或禁用时间断地引入通信信号的相位偏移的影响。

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：US20040264601A1

公开(公告)日：2004-12-30

申请号：US10747644

申请日：2003-12-29

Applicant: InterDigital Technology Corporation

Inventor： Alpaslan Demir ,  Leonid Kazekevich ,  Tanbir Haque

IPC: H03D003/00

CPC classification number: H03D3/009

Abstract: A digital baseband (DBB) radio frequency (RF) receiver includes a digital high pass filter compensation (HPFC) module used to suppress group delay variation distortion caused by using low cost analog high pass filters (HPFs) in the receiver. The digital HPFC module reduces a cutoff frequency, established by the HPFs for the real and imaginary signal component frequency domain responses by providing a first compensation signal having a first predetermined value (K1). The digital HPFC module adjusts the gain of the high pass response of the real and imaginary signal component frequency domains by providing a second compensation signal having a second predetermined value (K2).

Abstract translation: 数字基带（RFB）射频接收机包括数字高通滤波器补偿（HPFC）模块，用于抑制在接收机中使用低成本模拟高通滤波器（HPF）引起的群延迟变化失真。 数字HPFC模块通过提供具有第一预定值（K1）的第一补偿信号来减少由HPF为实信号分量和虚信号分量频域响应建立的截止频率。 数字HPFC模块通过提供具有第二预定值（K2）的第二补偿信号来调整实信号分量频域和虚信号分量频域的高通响应的增益。

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。