公开(公告)号：WO9702675A3

公开(公告)日：1997-04-03

申请号：PCT/US9611059

申请日：1996-06-27

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH ,  SILVERBERG AVI

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24 ,  H04J13/04

CPC classification number: H04B7/2637 ,  G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70754 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2628 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/00 ,  H04J13/004 ,  H04J13/0048 ,  H04J13/0077 ,  H04J13/10 ,  H04J13/107 ,  H04J13/12 ,  H04J13/16 ,  H04J2013/0037 ,  H04L1/0001 ,  H04L1/004 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0059 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04N1/00912 ,  H04N1/3333 ,  H04N2201/3335 ,  H04W52/04 ,  H04W52/08 ,  H04W52/143 ,  H04W52/146 ,  H04W52/24 ,  H04W52/241 ,  H04W52/245 ,  H04W52/247 ,  H04W52/26 ,  H04W52/262 ,  H04W52/322 ,  H04W52/325 ,  H04W52/343 ,  H04W52/346 ,  H04W52/36 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60 ,  Y02D10/14

Abstract: A multiple access, spread-spectrum communication system processes a plurality of information signals received by a Radio Carrier Station (RCS) over telecommunication lines for simultaneous transmission over a radio frequency (RF) channel as a code-division-multiplexed (CDM) signal to a group of Subscriber Units (SUs). The RCS receives a call request signal that corresponds to a telecommunication line information signal, and a user identification signal that identifies a user to receive the call. The RCS includes a plurality of Code Division Multiple Access (CDMA) modems, one of which provides a global pilot code signal. The modems provide message code signals synchronized to the global pilot signal. Each modem combines an information signal with a message code signal to provide a CDM processed signal. The RCS includes a system channel controller coupled to receive a remote call. An RF transmitter is connected to all of the modems to combine the CDM processed signals with the global pilot code signal to generate a CDM signal. The RF transmitter also modulates a carrier signal with the CDM signal and transmits the modulated carrier signal through an RF communication channel to the SUs. Each SU includes a CDMA modem which is also synchronized to the global pilot signal. The CDMA modem despreads the CDM signal and provides a despread information signal to the user. The system includes a closed loop power control system for maintaining a minimum system transmit power level for the RCS and the SUs, and system capacity management for maintaining a maximum number of active SUs for improved system performance.

Abstract translation: 多址，扩频通信系统通过电信线路处理由无线电载波台（RCS）接收的多个信息信号，以便通过射频（RF）信道作为码分复用（CDM）信号同时发送到 一组用户单位（SU）。 RCS接收对应于电信线信息信号的呼叫请求信号，以及标识用户接收呼叫的用户识别信号。 RCS包括多个码分多址（CDMA）调制解调器，其中之一提供全局导频码信号。 调制解调器提供与全局导频信号同步的消息代码信号。 每个调制解调器将信息信号与消息代码信号组合以提供CDM处理的信号。 RCS包括耦合以接收远程呼叫的系统信道控制器。 RF发射机连接到所有调制解调器以将CDM处理的信号与全局导频码信号组合以产生CDM信号。 RF发射机还利用CDM信号调制载波信号，并通过RF通信信道将调制载波信号发送到SU。 每个SU包括也与全局导频信号同步的CDMA调制解调器。 CDMA调制解调器解扩CDM信号，并向用户提供解扩信息信号。 该系统包括用于维持RCS和SU的最小系统发射功率级的闭环功率控制系统以及用于维持最大数量的主动SU以提高系统性能的系统容量管理。

公开(公告)号：JP2003264481A

公开(公告)日：2003-09-19

申请号：JP2003013976

申请日：2003-01-22

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH ,  KOWALSKI JOHN ,  REGIS ROBERT ,  LUDDY MICHAEL ,  MARRA ALEXANDER ,  JACQUES ALEXANDER ,  SILVERBERG AVI

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To provide a high-speed capture device by which the spread code phase of a spread spectrum communication system is rapidly synchronized with a transmission code signal provided with a transmission I code signal including a first spread code sequence and a transmission Q code signal includ ing a second spread code sequence. SOLUTION: The high-speed capture device includes: a receiving means for receiving the transmission code signal, and separating the transmission I code signal from the transmission Q code signal; a correlation means provided with an I code signal correlator and a Q code signal correlator; a local code sequence generator; and a controller which is connected to the I code signal correlator, the Q code signal correlator, and the local code sequence generator, so as to decide, achieve and keep a code sequence lock. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003249912A

公开(公告)日：2003-09-05

申请号：JP2003014009

申请日：2003-01-22

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH ,  KOWALSKI JOHN ,  REGIS ROBERT ,  LUDDY MICHAEL ,  MARRA ALEXANDER ,  JACQUES ALEXANDER ,  SILVERBERG AVI

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To provide a method for managing capacity in a spread spectrum communication system including a base station and a plurality of subscriber stations. SOLUTION: The base station includes the processes for: measuring the transmission power levels of a connection channel and a plurality of message channels; comparing the transmission power levels with a first prescribed power value to generate a power comparison result value; and setting a traffic connection value in the first prescribed value to interrupt the transmission of an allocated channel and the message channels of each of the subscriber stations when the transmission power level is consequently equal to or more than the prescribed power value. Each of the subscriber stations includes the processes for: allocating a transmission power level to measure a channel and a message channel; comparing the transmission power level with a second prescribed value; and displaying a maximum power state in the base station when one transmission power level is equal to or more than the second prescribed value. The base station further includes a process for interrupting the transmission of the allocated channel and message channel of each of the subscriber stations in response to the maximum power state. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003249875A

公开(公告)日：2003-09-05

申请号：JP2003014033

申请日：2003-01-22

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH ,  KOWALSKI JOHN ,  REGIS ROBERT ,  LUDDY MICHAEL ,  MARRA ALEXANDER ,  JACQUES ALEXANDER ,  SILVERBERG AVI

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24

Abstract: PROBLEM TO BE SOLVED: To provide a method of efficiently utilizing an ISDN radio link capacity of a spread spectrum communication system, including first and second spread spectrum transceivers. SOLUTION: The method comprises a process for delaying a digital data signal by a first spread spectrum transceiver to form a delayed digital data signal, a process for monitoring the digital data signal to detect a predetermined flag pattern, a process for transmitting the delayed digital data signal to a second spread spectrum transceiver as a spread spectrum signal, a process for interrupting transmission of the delayed digital data signal when the predetermined flag pattern exists, a process for detecting absence of the delayed digital data signal by the second spread spectrum transceiver, and a process for inserting the predetermined flag pattern into the transmitted digital data signal. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003244028A

公开(公告)日：2003-08-29

申请号：JP2003010388

申请日：2003-01-17

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH ,  SILVERBERG AVI

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24

Abstract: PROBLEM TO BE SOLVED: To provide a code sequence generating apparatus for generating a plurality of spread code sequences having inter cross correlation within a prescribed range and having a prescribed inter code phase relation. SOLUTION: The spread code sequence generating apparatus includes a plurality of stages including a first stage and a final stage, wherein each stage has: a linear feedback shift register (LFSR) for demarcating a tap for generating a tap signal, applying a prescribed tap signal group to a logic circuit where the signals are composed and a feedback spread signal for input to the first stage is produced; a memory means being a first memory means for storing a plurality of spread code seeds, connected to the LFSR, and for respectively transferring each of a prescribed set of the spread code sequences of the spread code seed to be selected in response to a load signal; and a code generating unit control means for selecting one of a plurality of the spread code seeds and producing the load signal corresponding to the spread code. The LFSR transfers the tap signal from one stage to the next, transfers the feedback spread code value to the first stage, and demarcates a master spread code sequence by each of consecutive tap signal values of the final stage. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003244023A

公开(公告)日：2003-08-29

申请号：JP2003010344

申请日：2003-01-17

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH ,  SILVERBERG AVI

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24

Abstract: PROBLEM TO BE SOLVED: To provide an adaptive matching filter (AMF) apparatus for collecting signal power of a spread spectrum data channel from a spread spectrum signal. SOLUTION: The adaptive matching filter apparatus includes; a pilot vector correlation means for producing a plurality of multi-path signal weighting values depending on a plurality of multi-path signal carrier components; a local code sequence generating means for generating a plurality of local code sequences being code phase shift outputs of a prescribed spread code sequence; a plurality of spread code correlating units for producing respective multi-path data signal components having already been subjected to despread processing having carrier phase values in a data AMF for receiving the spread spectrum signal; a plurality of weighting means for producing a plurality of scaling and matched data signal components applying scaling to the multi-path data in response to the multi-path weighting values; and the data AMF means provided with a combining means for combining the scaling and matched data signal components to produce data values. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003224492A

公开(公告)日：2003-08-08

申请号：JP2003013627

申请日：2003-01-22

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH ,  KOWALSKI JOHN ,  REGIS ROBERT ,  LUDDY MICHAEL ,  MARRA ALEXANDER ,  JACQUES ALEXANDER ,  SILVERBERG AVI

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24

Abstract: PROBLEM TO BE SOLVED: To provide a subscriber station unit for a large capacity multiple access spread spectrum communication system, which forms a plurality of concurrent user bearer channels through a prescribed radio frequency, to enable dynamic allocation of a bearer channel speed, while preventing multipath interference. SOLUTION: The subscriber station unit for the multiple access spread spectrum communication system includes a receiving means, a subscriber station unit controller, and a modem-processing means provided with a global pilot code acquiring means, a plurality of message code generators, a global pilot code tracking means, a phase-adjusting means and a plurality of message- acquiring means. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003249876A

公开(公告)日：2003-09-05

申请号：JP2003010332

申请日：2003-01-17

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH ,  SILVERBERG AVI

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To provide a code division multiple access modem for a spread spectrum communication system. SOLUTION: The system provides a modem transmitter, which includes a code generator, a spread spectrum measure composing code signals respectively, a global pilot code generator generating global pilot code signals, and a modem receiver which includes a pilot code generator, and a pilot code correlation device correlating between the code phase delay output of a pilot signal and a received CDMA signal and generating a relating pilot signal, after being inverse spread. The system responses a captured signal value and changes a code phase of the pilot signal, until the pilot signal is received. A related pilot code tracking logical circuit responses to the captured signal and adjusts phase of the relating pilot code signal, and the system provides a signal seizure circuit which makes the signal power level of the related pilot code signal after the inverse spread to be a maximum value. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003224494A

公开(公告)日：2003-08-08

申请号：JP2003010382

申请日：2003-01-17

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH ,  SILVERBERG AVI

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24

Abstract: PROBLEM TO BE SOLVED: To provide a pilot vector correlator for a spread spectrum communication system. SOLUTION: The pilot vector correlator is provided with a local pilot code sequence generating means for generating a local code sequence, in which a pilot spread code sequence is code-phase shifted, a pilot spread code correlator provided with a multiplier for correlating the local code sequence with a spread signal and generating a correlated pilot signal value, by multiplying the spread signal with the local code sequence and an accumulator for accumulating the correlated signal to generate despread multipath pilot signal components, a filter means having a built-in low-pass filter for generating a multipath signal weighting value, corresponding to the carrier signal phase value of reception multipath signal components upon receiving the despread multipath pilot signal components, a complex multiplying means for multiplying the multipath pilot signal components by a weighted value, and a combining means for generating a pilot data value by combining the phase-rotated pilot signal. COPYRIGHT: (C)2003,JPO

公开(公告)号：FI20125079A

公开(公告)日：2012-01-26

申请号：FI20125079

申请日：2012-01-26

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH ,  KOWALSKI JOHN ,  REGIS ROBERT ,  LUDDY MICHAEL ,  MARRA ALEXANDER ,  JACQUES ALEXANDER ,  SILVERBERG AVI

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24

Abstract: The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502), the initial transmit power level of which is maintained, wherein the first station generates an automatic power control signal by comparing a measured noise power level in a communication channel and an estimated system transmit power level and the second station occasionally transmits a spread spectrum signal whilst in an inactive state and receives the automatic power control signal to adjust an initial transmit power level thereof.