MX9301917A - Generador de frecuencia de seudorruido de longituda una potencia de dos con ajuste rapido de compen-sacion. - Google Patents

Generador de frecuencia de seudorruido de longituda una potencia de dos con ajuste rapido de compen-sacion.

Info

Publication number
MX9301917A
MX9301917A MX9301917A MX9301917A MX9301917A MX 9301917 A MX9301917 A MX 9301917A MX 9301917 A MX9301917 A MX 9301917A MX 9301917 A MX9301917 A MX 9301917A MX 9301917 A MX9301917 A MX 9301917A
Authority
MX
Mexico
Prior art keywords
longitude
pseudo
power
frequency generator
noise frequency
Prior art date
Application number
MX9301917A
Other languages
English (en)
Inventor
Timothy I Rueth
Lindsay A Weaver Jr
Klein S Gilhousen
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of MX9301917A publication Critical patent/MX9301917A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/58—Random or pseudo-random number generators
    • G06F7/582—Pseudo-random number generators
    • G06F7/584—Pseudo-random number generators using finite field arithmetic, e.g. using a linear feedback shift register
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/84—Generating pulses having a predetermined statistical distribution of a parameter, e.g. random pulse generators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/0022—PN, e.g. Kronecker
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
    • H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
    • H04L9/0662—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/58—Indexing scheme relating to groups G06F7/58 - G06F7/588
    • G06F2207/581—Generating an LFSR sequence, e.g. an m-sequence; sequence may be generated without LFSR, e.g. using Galois Field arithmetic
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/58—Indexing scheme relating to groups G06F7/58 - G06F7/588
    • G06F2207/583—Serial finite field implementation, i.e. serial implementation of finite field arithmetic, generating one new bit or trit per step, e.g. using an LFSR or several independent LFSRs; also includes PRNGs with parallel operation between LFSR and outputs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/04—Masking or blinding
    • H04L2209/046—Masking or blinding of operations, operands or results of the operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/12—Details relating to cryptographic hardware or logic circuitry

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Manipulation Of Pulses (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

La presente invención se refiere al campo de las comunicaciones. De manera más particular, la presente invención se refiere a un nuevo y mejorado generador de ruido seudoaleatorio (RS) para generar una secuencia de código RS capaz de ser utilizada para la dispersión de secuencia directa de una señal de comunicación en un sistema de comunicaciones de espectro extendido.
MX9301917A 1992-04-03 1993-04-02 Generador de frecuencia de seudorruido de longituda una potencia de dos con ajuste rapido de compen-sacion. MX9301917A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/862,687 US5228054A (en) 1992-04-03 1992-04-03 Power-of-two length pseudo-noise sequence generator with fast offset adjustment

Publications (1)

Publication Number Publication Date
MX9301917A true MX9301917A (es) 1994-08-31

Family

ID=25339060

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9301917A MX9301917A (es) 1992-04-03 1993-04-02 Generador de frecuencia de seudorruido de longituda una potencia de dos con ajuste rapido de compen-sacion.

Country Status (8)

Country Link
US (1) US5228054A (es)
CN (1) CN1068686C (es)
AU (1) AU4045593A (es)
IL (1) IL105207A (es)
MX (1) MX9301917A (es)
SG (1) SG80542A1 (es)
WO (1) WO1993020630A1 (es)
ZA (1) ZA932097B (es)

Families Citing this family (101)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6693951B1 (en) 1990-06-25 2004-02-17 Qualcomm Incorporated System and method for generating signal waveforms in a CDMA cellular telephone system
US5469469A (en) * 1993-12-07 1995-11-21 University Of Massachusetts Lowell Research Foundation Composite spread spectrum signal including modulator demodulator
KR970002951B1 (ko) * 1994-04-13 1997-03-13 양승택 2^n길이 의사 난수 계열 발생 장치
KR970011690B1 (ko) 1994-11-22 1997-07-14 삼성전자 주식회사 파일럿트 채널을 이용한 대역확산 통신시스템의 데이타 송신기 및 수신기
US5602833A (en) * 1994-12-19 1997-02-11 Qualcomm Incorporated Method and apparatus for using Walsh shift keying in a spread spectrum communication system
US5602874A (en) * 1994-12-29 1997-02-11 Motorola, Inc. Method and apparatus for reducing quantization noise
US5691974A (en) * 1995-01-04 1997-11-25 Qualcomm Incorporated Method and apparatus for using full spectrum transmitted power in a spread spectrum communication system for tracking individual recipient phase, time and energy
MY114291A (en) * 1995-01-31 2002-09-30 Qualcomm Inc Concentrated subscriber system for wireless local loop
US5544223A (en) * 1995-01-31 1996-08-06 Qualcomm Incorporated Method and apparatus for paging a concentrated subscriber system for wireless local loop
US6292476B1 (en) * 1997-04-16 2001-09-18 Qualcomm Inc. Method and apparatus for providing variable rate data in a communications system using non-orthogonal overflow channels
US5608722A (en) * 1995-04-03 1997-03-04 Qualcomm Incorporated Multi-user communication system architecture with distributed receivers
US5757767A (en) * 1995-04-18 1998-05-26 Qualcomm Incorporated Method and apparatus for joint transmission of multiple data signals in spread spectrum communication systems
US5703902A (en) * 1995-06-16 1997-12-30 Qualcomm Incorporated Method and apparatus for determining signal strength in a variable data rate system
US7072380B2 (en) 1995-06-30 2006-07-04 Interdigital Technology Corporation Apparatus for initial power control for spread-spectrum communications
US6816473B2 (en) 1995-06-30 2004-11-09 Interdigital Technology Corporation Method for adaptive forward power control for spread-spectrum communications
US7123600B2 (en) 1995-06-30 2006-10-17 Interdigital Technology Corporation Initial power control for spread-spectrum communications
US6697350B2 (en) 1995-06-30 2004-02-24 Interdigital Technology Corporation Adaptive vector correlator for spread-spectrum communications
US6788662B2 (en) 1995-06-30 2004-09-07 Interdigital Technology Corporation Method for adaptive reverse power control for spread-spectrum communications
US7020111B2 (en) * 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
US6831905B1 (en) 1995-06-30 2004-12-14 Interdigital Technology Corporation Spread spectrum system assigning information signals to message-code signals
US7929498B2 (en) 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
US6049535A (en) 1996-06-27 2000-04-11 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
ZA965340B (en) * 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
USRE38523E1 (en) 1995-06-30 2004-06-01 Interdigital Technology Corporation Spreading code sequence acquisition system and method that allows fast acquisition in code division multiple access (CDMA) systems
US6885652B1 (en) 1995-06-30 2005-04-26 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
US6940840B2 (en) * 1995-06-30 2005-09-06 Interdigital Technology Corporation Apparatus for adaptive reverse power control for spread-spectrum communications
US6246675B1 (en) 1995-11-14 2001-06-12 Andrew Beasley CDMA cordless telephone system and method of operation thereof
US5892792A (en) * 1995-12-06 1999-04-06 Rockwell International Corporation 12-chip coded spread spectrum modulation for direct conversion radio architecture in a digital cordless telephone
US5878075A (en) * 1996-07-26 1999-03-02 Motorola, Inc. Method of and apparatus for generating a pseudorandom noise sequence
US5910956A (en) * 1996-11-05 1999-06-08 Northrop Gruman Corporation Random time interval generator
JP3651154B2 (ja) * 1996-12-27 2005-05-25 ソニー株式会社 Ｐｎ符号発生回路及び無線システムの端末装置
DE69825567T2 (de) 1997-03-04 2005-07-28 Qualcomm, Inc., San Diego Mehrbenutzernachrichtenübertragungssystemarchitektur mit verteilten sendern
US6236863B1 (en) 1997-03-31 2001-05-22 Oki Telecom, Inc. Comprehensive transmitter power control system for radio telephones
US6005888A (en) * 1997-07-08 1999-12-21 Texas Instruments Incorporated Method for providing offset mask for pseudo-noise sequence generator
US5835528A (en) * 1997-07-08 1998-11-10 Texas Instruments Incorporated Method for fast determination of puesdo-noise code generator state
US6560461B1 (en) 1997-08-04 2003-05-06 Mundi Fomukong Authorized location reporting paging system
JP3329705B2 (ja) * 1997-09-02 2002-09-30 松下電器産業株式会社 Ｐｎ符号発生装置及び移動無線通信システム
EP1029398B1 (en) 1997-10-10 2009-11-25 QUALCOMM Incorporated Multi-layered pn code spreading in a multi-user communications system
US20020051434A1 (en) * 1997-10-23 2002-05-02 Ozluturk Fatih M. Method for using rapid acquisition spreading codes for spread-spectrum communications
JP3587675B2 (ja) * 1998-02-18 2004-11-10 富士通株式会社 擬似雑音発生装置
US6563808B1 (en) * 1998-03-04 2003-05-13 Stanford Telecommunications, Inc. Apparatus for incorporating multiple data rates in an orthogonal direct sequence code division multiple access (ODS-CDMA) communications system
US5926070A (en) * 1998-03-04 1999-07-20 Texas Instruments Incorporated Efficient offset mask generator for pseudo-noise sequence generator
WO1999045670A2 (en) * 1998-03-05 1999-09-10 Koninklijke Philips Electronics N.V. Mask generating polynomials for pseudo-random noise generators
US6339645B2 (en) * 1998-03-06 2002-01-15 Telefonaktiebolaget Lm Ericsson (Publ) Pseudo-random sequence generator and associated method
US6285873B1 (en) 1998-03-09 2001-09-04 Qualcomm Incorporated Method for generating a broadcast challenge value
JP3556461B2 (ja) * 1998-03-18 2004-08-18 富士通株式会社 Ｍ系列の位相シフト係数算出方式
JPH11275052A (ja) * 1998-03-19 1999-10-08 Fujitsu Ltd 拡散符号化装置およびその方法
US6625204B1 (en) 1998-04-24 2003-09-23 Aloha Networks, Inc. Synchronization and bit detection in a single spreading sequence SAMA receiver
US6282181B1 (en) 1998-04-24 2001-08-28 Ericsson Inc Pseudorandom number sequence generation in radiocommunication systems
US6404826B1 (en) 1998-07-02 2002-06-11 Texas Instruments Incorporated Iterative signal-to-interference ratio estimation for WCDMA
US6556555B1 (en) 1998-09-22 2003-04-29 J.S. Lee Associates, Inc. Method for calculating the PN generator mask to obtain a desired shift of the PN code
WO2000019732A2 (en) * 1998-09-29 2000-04-06 Samsung Electronics Co., Ltd. Device and method for generating spreading code and spreading channel signals using spreading code in cdma communication system
US6356605B1 (en) 1998-10-07 2002-03-12 Texas Instruments Incorporated Frame synchronization in space time block coded transmit antenna diversity for WCDMA
US6643338B1 (en) * 1998-10-07 2003-11-04 Texas Instruments Incorporated Space time block coded transmit antenna diversity for WCDMA
US6345069B1 (en) 1998-10-16 2002-02-05 Texas Instruments Incorporated Simplified cell search scheme for first and second stage
AU1213200A (en) * 1998-10-21 2000-05-08 Qualcomm Incorporated Encryption support in a hybrid gsm/cdma network
US6331975B1 (en) 1998-10-28 2001-12-18 Texas Instruments Incorporated User data indicator for discontinuous transmission
KR100442661B1 (ko) * 1998-11-02 2004-10-14 삼성전자주식회사 이동통신시스템의단부호생성장치및방법
US6480503B1 (en) 1998-12-28 2002-11-12 Texas Instruments Incorporated Turbo-coupled multi-code multiplex data transmission for CDMA
US6687376B1 (en) 1998-12-29 2004-02-03 Texas Instruments Incorporated High-speed long code generation with arbitrary delay
US6636553B1 (en) * 1998-12-29 2003-10-21 Texas Instruments Incorporated Pseudorandom noise generator for WCDMA
US6173009B1 (en) 1998-12-29 2001-01-09 Texas Instruments Incorporated State calculation circuit for discrete linear state space model
US6088347A (en) * 1999-03-10 2000-07-11 Massachusetts Institute Of Technology Variable chip rate code-division multiple access
FI108182B (fi) * 1999-03-23 2001-11-30 Nokia Networks Oy Menetelmä päivittää koodigeneraattorin lineaarinen palautesiirtorekisteri
KR20000066904A (ko) * 1999-04-21 2000-11-15 윤종용 부호분할다중접속 통신시스템의 확산코드 발생장치 및 방법
US6895090B1 (en) 1999-04-30 2005-05-17 Texas Instruments Incorporated Pseudo-noise sequence with insertion having variant length and position
US6289067B1 (en) 1999-05-28 2001-09-11 Dot Wireless, Inc. Device and method for generating clock signals from a single reference frequency signal and for synchronizing data signals with a generated clock
US6452959B1 (en) 1999-05-28 2002-09-17 Dot Wireless, Inc. Method of and apparatus for generating data sequences for use in communications
US6539049B1 (en) 1999-05-28 2003-03-25 Dot Wireless, Inc. Device and method for maintaining time synchronous with a network master time
US6748006B1 (en) 1999-05-28 2004-06-08 Texas Instruments Incorporated Method and apparatus for controlling system timing with use of a master timer
US6281822B1 (en) 1999-05-28 2001-08-28 Dot Wireless, Inc. Pulse density modulator with improved pulse distribution
JP2000350262A (ja) 1999-06-07 2000-12-15 Yozan Inc 符号生成方法および符号生成回路
KR100763599B1 (ko) * 1999-07-05 2007-10-05 엠텍비젼 주식회사 임의의 오프셋을 갖는 단축된 주기의 의사잡음 코드를 생성하기 위한 의사잡음 코드 생성 장치 및 그 방법
US6640236B1 (en) * 1999-08-31 2003-10-28 Qualcomm Incorporated Method and apparatus for generating multiple bits of a pseudonoise sequence with each clock pulse by computing the bits in parallel
US6282230B1 (en) * 1999-09-23 2001-08-28 Texas Instruments Incorporated Block pseudo-noise generating circuit
US7012950B1 (en) 1999-11-15 2006-03-14 Lg Electronics Inc. Apparatus for generating pseudo-noises code and method for generating pseudo-noise codes using the same
US6246676B1 (en) * 1999-12-13 2001-06-12 Motorola, Inc. Method and apparatus for implementing PN masks for a truncated M-sequence
ATE403272T1 (de) * 1999-12-22 2008-08-15 Ericsson Telefon Ab L M Verfahren und elektrische vorrichtung für die leistungsfähige generierung von mehrfachraten- pseudozufallsfolgen
US6647054B1 (en) * 1999-12-29 2003-11-11 Koninklijke Philips Electronics N.V. Multiple mask arrangement for jumping in pseudo-noise sequences
US6594680B1 (en) 1999-12-30 2003-07-15 Texas Instruments Incorporated Psuedo-random noise sequence generating system
WO2001055837A1 (en) * 2000-01-28 2001-08-02 Morphics Technology Inc. Apparatus and method for modifying an m-sequence with arbitrary phase shift
US6959033B1 (en) 2000-08-25 2005-10-25 Texas Instruments Incorporated System and method for assigning combiner channels in spread spectrum communications
US6771691B1 (en) 2000-09-15 2004-08-03 Texas Instruments Incorporated System and method for extracting soft symbols in direct sequence spread spectrum communications
US7031374B1 (en) 2000-10-06 2006-04-18 Texas Instruments Incorporated System and method for selecting sample streams in direct sequence spread spectrum communications
US6889055B1 (en) * 2000-10-16 2005-05-03 Qualcomm Inc. Technique for reducing average power consumption in a wireless communications device
CN100435500C (zh) * 2001-03-29 2008-11-19 深圳市中兴集成电路设计有限责任公司 快速产生与基站相位同步的伪随机码序列的方法
US6987799B2 (en) * 2001-05-03 2006-01-17 Texas Instruments Incorporated System and method for demodulating associated information channels in direct sequence spread spectrum communications
US6735606B2 (en) * 2001-05-15 2004-05-11 Qualcomm Incorporated Multi-sequence fast slewing pseudorandom noise generator
US20030002566A1 (en) * 2001-06-19 2003-01-02 Mcdonough John G. System and method for shifting the phase of pseudorandom noise code in direct sequence spread spectrum communications
GB2379140B (en) * 2001-08-22 2004-11-10 Ubinetics Ltd Code generation
DE10147306A1 (de) * 2001-09-26 2003-07-03 Infineon Technologies Ag Verfahren und Vorrichtung zur Bestimmung von Initialisierungszuständen bei Pseudo-Noise-Folgen
US6963888B2 (en) * 2001-11-29 2005-11-08 Koninklijke Philips Electronics N.V. Method and apparatus for preventing noise from influencing a random number generator based on flip-flop meta-stability
US20030112971A1 (en) * 2001-12-17 2003-06-19 Motorola, Inc. Method for generating a desired state of a pseudorandom sequence and a radio using same
US6667708B2 (en) * 2001-12-28 2003-12-23 Motorola, Inc. Method and system for a programmable code generator
US7317776B2 (en) * 2002-04-18 2008-01-08 Texas Instruments Incorporated Efficient pseudo-noise sequence generation for spread spectrum applications
US20040024803A1 (en) * 2002-07-31 2004-02-05 Allen Montijo Cascaded modified PRBS counters form easily programmed and efficient large counter
US7124156B2 (en) * 2003-01-10 2006-10-17 Nec America, Inc. Apparatus and method for immediate non-sequential state transition in a PN code generator
US7995926B2 (en) * 2003-02-21 2011-08-09 Northrop Grumman Systems Corporation Scanned acquisition using pre-track data
CN100426709C (zh) * 2003-03-06 2008-10-15 华为技术有限公司 Cdma无线通讯系统接收的多个用户的码的产生方法与装置
US20070005673A1 (en) * 2005-06-30 2007-01-04 Peter Lablans The Creation and Detection of Binary and Non-Binary Pseudo-Noise Sequences Not Using LFSR Circuits
CN108335707A (zh) * 2018-02-09 2018-07-27 盛科网络（苏州）有限公司 一种带掩码的高速存储器设计方法及装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785410A (en) * 1985-06-05 1988-11-15 Clarion Co., Ltd. Maximum length shift register sequences generator
US4864525A (en) * 1986-07-11 1989-09-05 Clarion Co., Ltd. Maximum length shift register sequence generator
US4776012A (en) * 1987-04-17 1988-10-04 Unisys Corporation Method of jumping composite PN codes
JPS6436233A (en) * 1987-07-31 1989-02-07 Clarion Co Ltd Spread spectrum communication system
JPH0250512A (ja) * 1988-08-10 1990-02-20 Clarion Co Ltd 疑似ランダム雑音符号発生装置
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
NZ238651A (en) * 1990-07-20 1994-04-27 Ericsson Ge Mobile Communicat Encryption system for digital cellular communications

Also Published As

Publication number Publication date
IL105207A0 (en) 1993-09-22
SG80542A1 (en) 2001-05-22
AU4045593A (en) 1993-11-08
ZA932097B (en) 1994-01-12
WO1993020630A1 (en) 1993-10-14
CN1068686C (zh) 2001-07-18
CN1082284A (zh) 1994-02-16
IL105207A (en) 1996-10-16
US5228054A (en) 1993-07-13

Similar Documents

Publication Publication Date Title
MX9301917A (es) Generador de frecuencia de seudorruido de longituda una potencia de dos con ajuste rapido de compen-sacion.
ES2118811T3 (es) Sistema y procedimiento de comunicaciones de espectro expandido sincrono.
SE9702843L (sv) Kommunikation med hjälp av spektrumspridningsmetoder över optiska fibrer
NO20070112L (no) Kansellering av pilot- og uonskede trafikksignaler i et CDMA-system
ES2095302T3 (es) Sistema de comunicaciones de espectro de propagacion de secuencia directa (dss) con modulacion de frecuencia utilizado para conseguir propagacion de espectros.
EA199700091A1 (ru) Способ и устройство использования передаваемой мощности полного спектра в системе связи с расширенным спектром для отслеживания фазы и энергии сигнала индивидуального абонента
BR0006799A (pt) Amplificador de potência multimodo eficiente e método de amplificar um sinal modulado
CA2245196A1 (en) Device and method for generating spread spectrum signal using pseudo-orthogonal code in cdma mobile communications system
CA2102601A1 (en) Spread Spectrum Correlator
ES2153574T3 (es) Metodo para comunicar con y/o para observar y/o localizar objetos y modulo empleado para esto.
ZA955939B (en) Method and apparatus for performing search acquisition in a CDMA communications system
ID23828A (id) Metode dan apparatus untuk membangkitkan suatu rangkaian kode pengacakan yang kompleks
ATE249693T1 (de) Nichtlinearer generator zum erzeugen von verzerrungen
NO983559L (no) FremgangsmÕte for Õ generere en bµreb°lge for felles kanaler, samt radiosystem
AU7056500A (en) Apparatus and methods for receiving information using variable length accumulation searchers
FI925952A0 (fi) Järjestely vastaanotinantennin kunnon mittaamiseksi
AR013957A1 (es) Un aparato de comunicacion por radio.
ATE224117T1 (de) Nichtlinearer generator zum erzeugen von verzerrungen zweiter und dritter ordnung
NO992043L (no) FremgangsmÕte for kombinering av flere signaler, samt basestasjon
AR002431A1 (es) Disposicion de red de telecomunicacion inalambrica y un metodo para realizar telecomunicaciones inalambricas.
ES2158441T3 (es) Arilheterociclos con actividad herbicida.
ES2147574T3 (es) Disposicion de circuito para la derivacion de una señal dependiente de la direccion de la modificacion de la intensidad del campo de recepcion.
Taraprasad et al. Subcarrier multiple access fiber-optic mm-wave radio using cascaded Mach-Zehnder interferometric square-law modulators
RU94035692A (ru) Устройство для передачи и приема сигнала дополнительной информации по каналу вещания с частотной модуляцией
TW266361B (en) Communications transmitter, communication receiver, communication system, and direct sequence spread spectrum system