公开(公告)号：DE60316957T2

公开(公告)日：2008-07-24

申请号：DE60316957

申请日：2003-04-11

Applicant: INTERDIGITAL TECH CORP

Inventor： KAEWELL JOHN DAVID ,  BERGHIUS TIMOTHY ,  MEYER JAN ,  BOHNHOFF PETER ,  REZNIK ALEXANDER ,  HEPLER EDWARD L ,  KOCH MICHAEL ,  HACKETT WILLIAM C ,  BASS DAVID S ,  FERRANTE STEVEN

IPC: H04B1/709 ,  H04B1/10 ,  H04B1/707 ,  H04B7/04 ,  H04B7/08 ,  H04B7/216 ,  H04B7/26 ,  H04L27/06 ,  H04Q7/30

公开(公告)号：NO961310D0

公开(公告)日：1996-03-29

申请号：NO961310

申请日：1996-03-29

Applicant: INTERDIGITAL TECH CORP

Inventor： COOLEY DAVID M ,  DIGIOVANNI JOSEPH J ,  KAEWELL JOHN DAVID ,  LEMMO MARK A ,  VESSAL DAVID ,  KURTZ SCOTT D ,  REGENSBURG MICHAEL W ,  JOHNS ERIC

IPC: H04B1/16 ,  H04J3/00 ,  H04B7/24 ,  H04B7/26 ,  H04J3/06 ,  H04L5/26 ,  H04Q1/00 ,  H04W4/18 ,  H04W48/08 ,  H04W52/02 ,  H04W56/00 ,  H04W72/02 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04 ,  H04W84/14 ,  H04W88/00 ,  H04W88/02 ,  H04W88/08 ,  H04W99/00 ,  H04Q

Abstract: The present invention provides a method of minimizing synchronization delay in a radiotelephone system between a modular subscriber cluster communicating with a common base station, the modular subscriber cluster receiving repetitive time slots from the base station and having a plurality of frequency-agile modems, the method comprising the steps of: synchronizing a selected one of the modems to a selected time slot of the received time slots; generating a frame sync signal from said selected modem; and distributing said frame sync signal to remaining ones of the plurality of modems.

公开(公告)号：DE60316957D1

公开(公告)日：2007-11-29

申请号：DE60316957

申请日：2003-04-11

Applicant: INTERDIGITAL TECH CORP

Inventor： KAEWELL JOHN DAVID ,  BERGHIUS TIMOTHY ,  MEYER JAN ,  BOHNHOFF PETER ,  REZNIK ALEXANDER ,  HEPLER EDWARD L ,  KOCH MICHAEL ,  HACKETT WILLIAM C ,  BASS DAVID S ,  FERRANTE STEVEN

IPC: H04B1/709 ,  H04B1/10 ,  H04B1/707 ,  H04B7/04 ,  H04B7/08 ,  H04B7/216 ,  H04B7/26 ,  H04L27/06 ,  H04Q7/30

公开(公告)号：NO315889B1

公开(公告)日：2003-11-03

申请号：NO961310

申请日：1996-03-29

Applicant: INTERDIGITAL TECH CORP

Inventor： COOLEY DAVID M ,  DIGIOVANNI JOSEPH J ,  KAEWELL JOHN DAVID ,  LEMMO MARK A ,  VESSAL DAVID ,  KURTZ SCHOTT DAVID ,  REGENSBURG MICHAEL W ,  JOHNS ERIC

IPC: H04B1/16 ,  H04B7/24 ,  H04J3/00 ,  H04B7/26 ,  H04J3/06 ,  H04L5/26 ,  H04Q1/00 ,  H04W4/18 ,  H04W48/08 ,  H04W52/02 ,  H04W56/00 ,  H04W72/02 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04 ,  H04W84/14 ,  H04W88/00 ,  H04W88/02 ,  H04W88/08 ,  H04W99/00 ,  H04Q7/20

Abstract: The present invention provides a method of minimizing synchronization delay in a radiotelephone system between a modular subscriber cluster communicating with a common base station, the modular subscriber cluster receiving repetitive time slots from the base station and having a plurality of frequency-agile modems, the method comprising the steps of: synchronizing a selected one of the modems to a selected time slot of the received time slots; generating a frame sync signal from said selected modem; and distributing said frame sync signal to remaining ones of the plurality of modems.

公开(公告)号：DE3940690C2

公开(公告)日：2001-02-08

申请号：DE3940690

申请日：1989-12-08

Applicant: INTERDIGITAL TECH CORP

Inventor： KAEWELL JOHN DAVID ,  SCHREIER NICHOLAS C ,  ROLLER JAMES J

IPC: H04B7/24 ,  H04B7/08 ,  H04B7/26 ,  H04Q7/00 ,  H04Q7/20 ,  H04B7/04

Abstract: A spatial diversity system for digital mobile telephone networks which comprises at least two antennas, one antenna being part of a primary (or master) unit and the other being part of a diversity (or slave) unit, each unit having processing means to detect the "quality" of digital audio signals received by their respective antennas, the "quality" comprising link quality, AGC level and parity errors; the primary unit being capable of comparing the "quality" of the audio signals received by each antenna, selecting the higher "quality" signal and transmitting the higher "quality" signal to the telephone network.

公开(公告)号：GB2240690B

公开(公告)日：1994-06-29

申请号：GB9002383

申请日：1990-02-02

Applicant: INT MOBILE MACHINES ,  INTERDIGITAL COMMUNICATIONS CO ,  INTERDIGITAL TECH CORP

Inventor： KAEWELL JOHN DAVID ,  KURTZ SCOTT DAVID

IPC: H04B7/26 ,  H04J3/06 ,  H04M1/725 ,  H04W88/08 ,  H04Q7/02

公开(公告)号：SE506088C2

公开(公告)日：1997-11-10

申请号：SE8904132

申请日：1989-12-07

Applicant: INTERDIGITAL TECH CORP

Inventor： KAEWELL JOHN DAVID ,  ROLLER JAMES JOSEPH ,  SCHREIER NICHOLAS CARL

IPC: H04B7/08 ,  H04B7/24 ,  H04B7/26 ,  H04Q7/00 ,  H04Q7/20

Abstract: A spatial diversity system for digital mobile telephone networks which comprises at least two antennas, one antenna being part of a primary (or master) unit and the other being part of a diversity (or slave) unit, each unit having processing means to detect the "quality" of digital audio signals received by their respective antennas, the "quality" comprising link quality, AGC level and parity errors; the primary unit being capable of comparing the "quality" of the audio signals received by each antenna, selecting the higher "quality" signal and transmitting the higher "quality" signal to the telephone network.

公开(公告)号：NO961310L

公开(公告)日：1996-05-30

申请号：NO961310

申请日：1996-03-29

Applicant: INTERDIGITAL TECH CORP

Inventor： COOLEY DAVID M ,  DIGIOVANNI JOSEPH J ,  KAEWELL JOHN DAVID ,  LEMMO MARK A ,  VESSAL DAVID ,  KURTZ SCOTT D ,  REGENSBURG MICHAEL W ,  JOHNS ERIC

IPC: H04B1/16 ,  H04B7/24 ,  H04J3/00 ,  H04B7/26 ,  H04J3/06 ,  H04L5/26 ,  H04Q1/00 ,  H04W4/18 ,  H04W48/08 ,  H04W52/02 ,  H04W56/00 ,  H04W72/02 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04 ,  H04W84/14 ,  H04W88/00 ,  H04W88/02 ,  H04W88/08 ,  H04W99/00 ,  H04Q7/20

Abstract: The present invention provides a method of minimizing synchronization delay in a radiotelephone system between a modular subscriber cluster communicating with a common base station, the modular subscriber cluster receiving repetitive time slots from the base station and having a plurality of frequency-agile modems, the method comprising the steps of: synchronizing a selected one of the modems to a selected time slot of the received time slots; generating a frame sync signal from said selected modem; and distributing said frame sync signal to remaining ones of the plurality of modems.

公开(公告)号：NO20034451L

公开(公告)日：1996-05-30

申请号：NO20034451

申请日：2003-10-03

Applicant: INTERDIGITAL TECH CORP

Inventor： COOLEY DAVID M ,  DIGIOVANNI JOSEPH J ,  KAEWELL JOHN DAVID ,  LEMMO MARK A ,  VESSAL DAVID ,  KURTZ SCHOTT DAVID ,  REGENSBURG MICHAEL W ,  JOHNS ERIC

IPC: H04B1/16 ,  H04J3/00 ,  H04B7/24 ,  H04B7/26 ,  H04J3/06 ,  H04L5/26 ,  H04Q1/00 ,  H04W4/18 ,  H04W48/08 ,  H04W52/02 ,  H04W56/00 ,  H04W72/02 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04 ,  H04W84/14 ,  H04W88/00 ,  H04W88/02 ,  H04W88/08 ,  H04W99/00 ,  H04Q

Abstract: The present invention provides a method of minimizing synchronization delay in a radiotelephone system between a modular subscriber cluster communicating with a common base station, the modular subscriber cluster receiving repetitive time slots from the base station and having a plurality of frequency-agile modems, the method comprising the steps of: synchronizing a selected one of the modems to a selected time slot of the received time slots; generating a frame sync signal from said selected modem; and distributing said frame sync signal to remaining ones of the plurality of modems.

公开(公告)号：DE60325027D1

公开(公告)日：2009-01-15

申请号：DE60325027

申请日：2003-02-26

Applicant: INTERDIGITAL TECH CORP

Inventor： MEYER JAN ,  BOHNHOFF PETER ,  KAEWELL JOHN DAVID ,  REZNIK ALEXANDER

IPC: H04B1/7073 ,  H04L7/00 ,  H04W74/08

Abstract: Apparatus and method for correlating a received communication of a known sequence over a wireless channel. Processing at the required higher sampling rate is achieved through the use of a finite impulse response (FIR) filter (24) having a small number of taps for interpolating samples. This reduces hardware requirement by as much as one-half that of conventional techniques based on over-sampling the received signal, while obtaining amplitude degradation which is no worse than experienced when employing conventional techniques.