公开(公告)号：WO2005101675A2

公开(公告)日：2005-10-27

申请号：PCT/US2005/009499

申请日：2005-03-22

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION ,  KLAHN, Gerard ,  TROIANO, Robert ,  TYRA, Fryderyk ,  AXNESS, Tinothy, A.

Inventor： KLAHN, Gerard ,  TROIANO, Robert ,  TYRA, Fryderyk ,  AXNESS, Tinothy, A.

IPC: H04B1/38

CPC classification number: H04B1/0475

Abstract: Apparatus for reducing adjacent channel interference between proximate wireless communication units. Each wireless communication unit includes a digital baseband circuit and an analog baseband circuit. The digital baseband circuit includes at least one group delay compensation equalizer and at least one finite-impulse response (FIR) filter. The analog baseband circuit includes a radio (transmitter section), a power amplifier and a narrowband filter. The narrowband filter compensates for deficiencies of the power amplifier including distortion and radio frequency (RF) power spill over. The group delay compensation filter compensates for undesired characteristics (e.g., group delay variation) exhibited by the narrowband filter.

Abstract translation: 用于减少邻近无线通信单元之间的相邻信道干扰的装置。 每个无线通信单元包括数字基带电路和模拟基带电路。 数字基带电路包括至少一个组延迟补偿均衡器和至少一个有限脉冲响应（FIR）滤波器。 模拟基带电路包括无线电（发射机部分），功率放大器和窄带滤波器。 窄带滤波器补偿功率放大器的缺陷，包括失真和射频（RF）功率溢出。 组延迟补偿滤波器补偿窄带滤波器所呈现的不期望的特性（例如，组延迟变化）。

公开(公告)号：WO2006026249A2

公开(公告)日：2006-03-09

申请号：PCT/US2005/029858

申请日：2005-08-22

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION ,  AYCIN, Erica, Ellyn ,  KLAHN, Gerard ,  HAQUE, Tanbir ,  TYRA, Fryderyk ,  HAIM, John, W.

Inventor： AYCIN, Erica, Ellyn ,  KLAHN, Gerard ,  HAQUE, Tanbir ,  TYRA, Fryderyk ,  HAIM, John, W.

IPC: H04B7/08 ,  H04M1/00

CPC classification number: H04B1/1036 ,  H04B1/0003 ,  H04B17/336 ,  H04B17/382

Abstract: A method and apparatus for processing multiple wireless communication services in a receiver. A receiver receives more than one wireless communication service simultaneously via a wireless interface. Each service is transmitted via a different carrier frequency band. The multiple received carrier signals are down-converted to an intermediate frequency (IF) band using a mixer and a local oscillator (LO). The LO and sampling frequencies are adjusted such that the converted IF band signals of the input signals are spectrally adjacent or overlapping each other to some degree. SINAD of the services is measured at each of a plurality of spectrally overlapping conditions. The LO frequencies and the sampling frequency are then adjusted based on the SINAD measurement results.

Abstract translation: 一种在接收机中处理多个无线通信服务的方法和装置。 接收机通过无线接口同时接收多于一个的无线通信服务。 每个服务通过不同的载波频带传输。 使用混频器和本地振荡器（LO）将多个接收的载波信号下变频到中频（IF）频带。 调整LO和采样频率使得输入信号的转换的IF频带信号在一定程度上彼此频谱相邻或重叠。 在多个频谱重叠条件中的每一个处测量服务的SINAD。 然后根据SINAD测量结果调整LO频率和采样频率。

公开(公告)号：WO2003077356A3

公开(公告)日：2003-09-18

申请号：PCT/US2003/006464

申请日：2003-03-04

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KAZAKEVICH, Leonid ,  KLAHN, Gerard ,  OZLUTURK, Fatih

IPC: H04B1/02

Abstract: Method and apparatus for transfer of signals from multiple antennas down to baseband over a common radio frequency (RF) chain. Antenna selection having greater flexibility and applicability to both uplink and downlink wherein priority is given to the antenna receiving a better quality signal. Measurements are taken during each time slot to determine the weighting to be given to the antenna with the better quality signal. Techniques and apparatus are provided to take measurements over a range of intervals from time slots to single symbols, for example, to select the best signal the techniques described herein may be used individual, and in some cases are combined to receive additional benefits in efficiency.

公开(公告)号：EP1488532B1

公开(公告)日：2007-04-25

申请号：EP03709422.4

申请日：2003-03-04

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KAZAKEVICH, Leonid ,  KLAHN, Gerard ,  OZLUTURK, Fatih

IPC: H04B1/02 ,  H04B7/02 ,  H04B7/185 ,  H03C7/02 ,  H04B7/08

CPC classification number: H04B7/0868 ,  H04B7/0811 ,  H04B7/0857

Abstract: Method and apparatus for transfer of signals from multiple antennas down to baseband over a common radio frequency (RF) chain. Antenna selection having greater flexibility and applicability to both uplink and downlink wherein priority is given to the antenna receiving a better quality signal. Measurements are taken during each time slot to determine the weighting to be given to the antenna with the better quality signal. Techniques and apparatus are provided to take measurements over a range of intervals from time slots to single symbols, for example, to select the best signal the techniques described herein may be used individual, and in some cases are combined to receive additional benefits in efficiency.

公开(公告)号：EP1800412A2

公开(公告)日：2007-06-27

申请号：EP05789136.8

申请日：2005-08-22

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： AYCIN, Erica, Ellyn ,  KLAHN, Gerard ,  HAQUE, Tanbir ,  TYRA, Fryderyk ,  HAIM, John, W.

IPC: H04B1/26

CPC classification number: H04B1/1036 ,  H04B1/0003 ,  H04B17/336 ,  H04B17/382

Abstract: A method and apparatus for processing multiple wireless communication services in a receiver (100). A receiver (100) receives more than one wireless communication service simultaneously via a wireless interface. Each service is transmitted via a different carrier frequency band. The multiple received carrier signals are down-converted to an intermediate frequency (IF) band using a mixer (110, 116) and a local oscillator (LO). The LO and sampling frequencies are adjusted such that the converted IF band signals of the input signals are spectrally adjacent or overlapping each other to some degree. SINAD of the services is measured at each of a plurality of spectrally overlapping conditions. The LO frequencies and the sampling frequency are then adjusted based on the SINAD measurement results.

公开(公告)号：EP1730844A2

公开(公告)日：2006-12-13

申请号：EP05731403.1

申请日：2005-03-22

Applicant: Interdigital Technology Corporation

Inventor： KLAHN, Gerard ,  TROIANO, Robert ,  TYRA, Fryderyk ,  AXNESS, Tinothy, A.

IPC: H04B1/38

CPC classification number: H04B1/0475

Abstract: Apparatus for reducing adjacent channel interference between proximate wireless communication units. Each wireless communication unit includes a digital baseband circuit and an analog baseband circuit. The digital baseband circuit includes at least one group delay compensation equalizer and at least one finite-impulse response (FIR) filter. The analog baseband circuit includes a radio (transmitter section), a power amplifier and a narrowband filter. The narrowband filter compensates for deficiencies of the power amplifier including distortion and radio frequency (RF) power spill over. The group delay compensation filter compensates for undesired characteristics (e.g., group delay variation) exhibited by the narrowband filter.

公开(公告)号：EP1488532A2

公开(公告)日：2004-12-22

申请号：EP03709422.4

申请日：2003-03-04

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KAZAKEVICH, Leonid ,  KLAHN, Gerard ,  OZLUTURK, Fatih

IPC: H04B1/02 ,  H04B7/02 ,  H04B7/185 ,  H03C7/02

CPC classification number: H04B7/0868 ,  H04B7/0811 ,  H04B7/0857

Abstract: Method and apparatus for transfer of signals from multiple antennas down to baseband over a common radio frequency (RF) chain. Antenna selection having greater flexibility and applicability to both uplink and downlink wherein priority is given to the antenna receiving a better quality signal. Measurements are taken during each time slot to determine the weighting to be given to the antenna with the better quality signal. Techniques and apparatus are provided to take measurements over a range of intervals from time slots to single symbols, for example, to select the best signal the techniques described herein may be used individual, and in some cases are combined to receive additional benefits in efficiency.