KR950022509A - Complex Frequency Conversion and Decimation Method - Google Patents

Complex Frequency Conversion and Decimation Method Download PDF

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Publication number
KR950022509A
KR950022509A KR1019930029401A KR930029401A KR950022509A KR 950022509 A KR950022509 A KR 950022509A KR 1019930029401 A KR1019930029401 A KR 1019930029401A KR 930029401 A KR930029401 A KR 930029401A KR 950022509 A KR950022509 A KR 950022509A
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KR
South Korea
Prior art keywords
frequency conversion
frequency
complex frequency
signal
decimation
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Application number
KR1019930029401A
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Korean (ko)
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KR960009545B1 (en
Inventor
하경민
안동식
함영권
이혁재
Original Assignee
양승택
재단법인 한국전자통신연구소
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Priority to KR93029401A priority Critical patent/KR960009545B1/en
Publication of KR950022509A publication Critical patent/KR950022509A/en
Application granted granted Critical
Publication of KR960009545B1 publication Critical patent/KR960009545B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • H04B1/0021—Decimation, i.e. data rate reduction techniques

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

본 발명은 신호의 주파수가 표본화(Sampling)주파수의 1/4일때의 복조 주파수 변환, 저역 통과 여파기 및 4:1데시메이션의 연속적인 적용에서 승산이 없이 가산과 감산만으로 복소 주파수 변환, 저역 통과 여파기 계산 및 데시메이션 방법에 관한 것으로, 안테나(11), 수신기(12), A/D변환기(13), 퍼스널 컴퓨터(14)를 구비하는 전파신호 검출장치에 적용되는 복소 주파수 변환 및 데시메이션 방법에 있어서, 신호의 주파수가 표본화 주파수의 1/4일때의 복소 주파수 변환하는 제1단계; 4차원 MA(Moving average) 여파기를 사용하여 여파하는 제2단계; 여파된 신호를 4:1로 데시메이션하는 제3단계;를 포함하는 것을 특징으로 한다.The present invention provides a complex frequency conversion, low pass filter with only addition and subtraction without multiplication in the continuous application of demodulation frequency conversion, low pass filter, and 4: 1 decimation when the frequency of the signal is 1/4 of the sampling frequency. The present invention relates to a calculation and decimation method, comprising: a complex frequency conversion and decimation method applied to a radio wave signal detection device including an antenna (11), a receiver (12), an A / D converter (13), and a personal computer (14). A first step of performing a complex frequency conversion when the frequency of the signal is 1/4 of the sampling frequency; A second step of filtering using a four-dimensional moving average (MA) filter; And a third step of decimating the filtered signal to 4: 1.

Description

복소 주파수 변환 및 데시메이션(Decimation) 방법Complex Frequency Conversion and Decimation Methods

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

제3도는 본 발명에 따른 방법에 대한 처리 흐름도.3 is a process flow diagram for a method according to the invention.

Claims (1)

안테나(11), 수신기(12), A/D 변환기(13), 퍼스널 컴퓨터(14)를 구비하는 전파 신호 검출장치에 적용되는 복소 주파수 변환 및 데시메이션 방법에 있어서, 신호의 주파수가 표본화 주파수의 1/4일 때의 복소 주파수 변환하는 제1단계; 4차원 MA(Moving average) 여파기를 사용하여 여파하는 제2단계; 여파된 신호를 4 : 1로 데시메이션하는 제3단계를 포함하는 것을 특징으로 하는 복소 주파수 변환 및 데시메이션(Decimation) 방법.In a complex frequency conversion and decimation method applied to a radio wave signal detection device having an antenna 11, a receiver 12, an A / D converter 13, and a personal computer 14, the frequency of the signal is determined by the sampling frequency. A first step of performing complex frequency conversion when 1/4; A second step of filtering using a four-dimensional moving average (MA) filter; And a third step of decimating the filtered signal to 4: 1. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR93029401A 1993-12-23 1993-12-23 Method for decimating signal KR960009545B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR93029401A KR960009545B1 (en) 1993-12-23 1993-12-23 Method for decimating signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR93029401A KR960009545B1 (en) 1993-12-23 1993-12-23 Method for decimating signal

Publications (2)

Publication Number Publication Date
KR950022509A true KR950022509A (en) 1995-07-28
KR960009545B1 KR960009545B1 (en) 1996-07-20

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Application Number Title Priority Date Filing Date
KR93029401A KR960009545B1 (en) 1993-12-23 1993-12-23 Method for decimating signal

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1052800B1 (en) * 1999-05-11 2006-09-20 Koninklijke Philips Electronics N.V. Transmission system and receiver with decimation device

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KR960009545B1 (en) 1996-07-20

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