KR940010567A - Digital radio - Google Patents

Digital radio Download PDF

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Publication number
KR940010567A
KR940010567A KR1019930018421A KR930018421A KR940010567A KR 940010567 A KR940010567 A KR 940010567A KR 1019930018421 A KR1019930018421 A KR 1019930018421A KR 930018421 A KR930018421 A KR 930018421A KR 940010567 A KR940010567 A KR 940010567A
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KR
South Korea
Prior art keywords
signal
digital radio
digital
sample
baseband
Prior art date
Application number
KR1019930018421A
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Korean (ko)
Inventor
마샬 크리스토퍼
자우르 에리히
Original Assignee
프레데릭 얀 스미트
필립스 일렉트로닉스 엔.브이.
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Application filed by 프레데릭 얀 스미트, 필립스 일렉트로닉스 엔.브이. filed Critical 프레데릭 얀 스미트
Publication of KR940010567A publication Critical patent/KR940010567A/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Transceivers (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Analogue/Digital Conversion (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

본 발명에서, 특히 이동 무선 또는 무선 전화용 디지탈 무선 장치는 RF(6) 및/또는 IF(10)단계에서 기본 대역 신호 및/또는 하드제한을 위해 신호 압축(12)을 제안했다. 이와 같은 구조는 종래의 디지탈 무선장치보다 덜 복잡한 고레벨의 집적화가 이루어지고, 따라서 비용 절감효과가 있다. 본 발명의 일실시예에서, 신호 압축(12)은 싸인 성형 전달특성을 갖는 진대수 증폭기 또는 압축장치(13, 14)로써 수행할 수 있다.In the present invention, digital radio devices, in particular for mobile radio or cordless telephones, have proposed signal compression 12 for baseband signals and / or hard limiting in the RF 6 and / or IF 10 steps. Such a structure results in a higher level of integration, which is less complex than conventional digital radios, and thus has cost savings. In one embodiment of the present invention, the signal compression 12 can be performed with a true logarithmic amplifier or compression device 13, 14 having a signed shaping transfer characteristic.

디지탈화된 기본 대역 신호의 연속적인 신호처리(24)에 있어서, 압축 감소된 순람표에 대한 어드레스로서 기본 대역 신호의 샘플을 사용하여 압축 감소한 디지탈 신호를 수생할 수가 있다.In the continuous signal processing 24 of the digitalized baseband signal, the compressed reduced digital signal can be aquatic using a sample of the baseband signal as an address for the compressed reduced lookup table.

Description

디지탈 무선장치Digital radio

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 디지탈 무선장치를 가진 무선통신 시스템의 계통도,1 is a schematic diagram of a wireless communication system having a digital radio apparatus according to the present invention;

제2도는 디지탈 무선장치에서 사용하기 위한 단일 압축장치의 일실시예의 그래픽,2 is a graphical representation of one embodiment of a single compression device for use in a digital radio,

제3도는 여러 상태에 의거하여 본 발명에 따른 무선 장치에서 신호 레벨에 대한 비트 에러율의 가상 결과도.3 is a hypothetical result of the bit error rate versus signal level in a wireless device according to the present invention based on various conditions.

Claims (9)

위상 또는 주파수 변조된 무선주파수 신호를 수신하는 아날로그 수신부(4)와; 상기 무선주파수 신호를 적어도 하나의 기본 대역신호로 변환하는 기본 대역 변환수단(11)과; 상기 적어도 하나의 기본대역 신호를 샘플링하는 A/D 변환수단(22,23) 및; 상기 적어도 하나의 기본대역 신호의 샘플들을 처리하는 디지탈 처리수단(24)을 포함하는 디지탈 무선장치에 있어서, 상기 디지탈 무선장치(2)가, 상기 기본대역 변환수단(11)과A/D 변환수단(22,23)간에 결합되어 입력부에서 비교적 작은신호들 보다는 비교적 큰 신호들을 압축하는 평활 비선형 장치(12)를 포함하는 것을 특징으로 하는 디지탈 무선장치.An analog receiver 4 for receiving a phase or frequency modulated radio frequency signal; Basic band converting means (11) for converting the radio frequency signal into at least one basic band signal; A / D conversion means (22, 23) for sampling said at least one baseband signal; In a digital radio apparatus comprising digital processing means 24 for processing samples of the at least one baseband signal, the digital radio apparatus 2 comprises: the baseband conversion means 11 and the A / D conversion means. And a non-linear smoothing device (12) coupled between (22, 23) to compress relatively large signals rather than relatively small signals at the input. 제1항에 있어서, 상기 평활 비선형 장치(12)가 대수 증폭기 인것을 특징으로 하는 디지탈 무선장치.4. A digital radio device according to claim 1, wherein the smooth nonlinear device is a logarithmic amplifier. 제1항에 있어서, 상기 평활 비선형 장치(12)가 싸인 성형 전달 특성을 갖는 장치(13, 14)인 것을 특징으로 하는 디지탈 무선장치.The digital radio device according to claim 1, wherein the smooth nonlinear device (12) is a device (13, 14) having a wrapped molding transmission characteristic. 제1, 2또는 제3항에 있어서, 상기 기본대역 신호가 구형신호인 것을 특징으로 하는 디지탈 무선장치.4. The digital radio apparatus as claimed in claim 1, 2 or 3, wherein the baseband signal is a spherical signal. 제1, 2, 3 또는 제4항에 있어서, 상기 아날로그 수신부(4)에서 적어도 하나의 신호 제한 장치(6, 10)를 포함하는 것을 특징으로 하는 디지탈 무선장치.5. Digital radio device according to claim 1, 2, 3 or 4, characterized in that it comprises at least one signal limiting device (6, 10) at said analog receiver (4). 제5항에 있어서, 적어도 하나의 기본 대역 신호를 필터링하는 적어도 하나의 저역 필터(20, 21)를 포함하는 것을 특징으로 하는 디지탈 무선장치.6. A digital radio device according to claim 5, comprising at least one low pass filter (20, 21) for filtering at least one base band signal. 제5항 또는 제6항에 있어서, 적어도 하나의 신호 제한 장치(6, 10)전에 적어도 하나의 대역통과 필터(5, 9)를 포함하는 것을 특징으로 하는 디지탈 무선장치.Digital radio device according to claim 5 or 6, characterized in that it comprises at least one bandpass filter (5, 9) before at least one signal limiting device (6, 10). 전항중 어느 한항에 있어서, 상기 디지탈 처리수단(24)이 상기 평활 비선형 장치(12)에 의한 압축을 감소시키기도록 적어도 하나의 기본대역 신호의 샘플을 보정하기 위해 배치되어 있는 것을 특징으로 하는 디지탈 무선장치.Digital radio according to one of the preceding claims, characterized in that the digital processing means (24) is arranged to correct a sample of at least one baseband signal to reduce the compression by the smoothing nonlinear device (12). Device. 제8항에 있어서, 상기 처리수단(24)이 감소된 압축 샘플값을 출력하는 보정 순람표에 대해 어드레스로서의 샘플을 사용하여 상기 샘플을 보정하기 위해 배치되어 있는 것을 특징으로 하는 디지탈 무선장치.9. A digital radio apparatus according to claim 8, wherein said processing means (24) is arranged to correct said sample using a sample as an address for a correction lookup table that outputs a reduced compressed sample value. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930018421A 1992-10-26 1993-09-14 Digital radio KR940010567A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP92203277 1992-10-26
EP92203277.6 1992-10-26

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KR940010567A true KR940010567A (en) 1994-05-26

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KR (1) KR940010567A (en)
AU (1) AU663234B2 (en)
TW (1) TW234229B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7233624B2 (en) 2002-06-11 2007-06-19 Interdigital Technology Corporation Method and system for all digital gain control
CN101015129A (en) * 2004-09-09 2007-08-08 皇家飞利浦电子股份有限公司 Improvements in or relating to antenna matching in video receivers
US7688245B2 (en) * 2008-07-11 2010-03-30 Infineon Technologies Ag Method for quantizing of signal values and quantizer

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FR2581492B1 (en) * 1985-05-06 1990-02-23 Inovelf Sa LOGARITHMIC CONVERTERS AND THEIR APPLICATION TO MEASUREMENT OF TRANSMITTED LIGHT
DE3733739C1 (en) * 1987-10-06 1989-04-27 Ant Nachrichtentech Arrangement for A / D conversion with A / D converter

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TW234229B (en) 1994-11-11
AU663234B2 (en) 1995-09-28
AU5030993A (en) 1994-05-12
JPH06244887A (en) 1994-09-02

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