KR880700532A - Signal Processing Device and Method - Google Patents

Signal Processing Device and Method

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Publication number
KR880700532A
KR880700532A KR870700384A KR870700384A KR880700532A KR 880700532 A KR880700532 A KR 880700532A KR 870700384 A KR870700384 A KR 870700384A KR 870700384 A KR870700384 A KR 870700384A KR 880700532 A KR880700532 A KR 880700532A
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South Korea
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signal
digital
sampled
wideband
narrowband
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KR870700384A
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Korean (ko)
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빈센트 로버트
챨스 재스퍼 스티븐
앤더슨 롱리 레스터
헬렌 램버트 캐더린
죠셉 터니 윌리암
제임스 릴리 로스
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빈셑트 죠셉로너
모토로라 인코포레이티드
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Publication of KR880700532A publication Critical patent/KR880700532A/en

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    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00Demodulation of amplitude-modulated oscillations
    • H03D1/22Homodyne or synchrodyne circuits
    • H03D1/24Homodyne or synchrodyne circuits for demodulation of signals wherein one sideband or the carrier has been wholly or partially suppressed
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00Demodulation of amplitude-modulated oscillations
    • H03D1/22Homodyne or synchrodyne circuits
    • H03D1/2245Homodyne or synchrodyne circuits using two quadrature channels
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041Functional aspects of demodulators
    • H03D2200/005Analog to digital conversion
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041Functional aspects of demodulators
    • H03D2200/0052Digital to analog conversion
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/006Demodulation of angle-, frequency- or phase- modulated oscillations by sampling the oscillations and further processing the samples, e.g. by computing techniques

Abstract

내용 없음No content

Description

신호 처리 장치 및 방법Signal Processing Device and Method

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

제 1도는 본 발명의 디지탈 수신기의 기능을 도시하는 블럭선도.1 is a block diagram showing the functions of the digital receiver of the present invention.

Claims (12)

희망 협대역 아나로그 신호를 포함한 광대역 아나로그 신호를 실제로 디지탈 처리한 장치로서,A device that actually digitally processes a wideband analog signal including a desired narrowband analog signal, (a) 결합 수단 및 필터 수단을 포함하여 희망 협대역 아나로그 신호를 포함한 광대역 아나로그 신호를 수신하여 필터링 하는 수단,(a) means for receiving and filtering a wideband analog signal comprising a desired narrowband analog signal, including combining means and filter means, (b) 상기 필터 수단에 결합되어 상기 광대역 아나로그 그 신호를 주기적으로 샘플링하여 이 신호를 샘플된 광대역 디지탈 신호로 변환시키는 디지트 화수단.(b) digitizing means coupled to the filter means for periodically sampling the wideband analog signal and converting the signal into a sampled wideband digital signal. (c) 상기 디지트화 수단에 결합되어 샘플된 광대역 디지탈 신호에서 희망 샘플된 협대역 디지탈 신호를 선택하는 디지탈 수단 및.(c) digital means coupled to said digitizing means to select a desired sampled narrowband digital signal from a sampled wideband digital signal; (d) 상기 샘플된 협대역 디지탈 신호를 복조하는 디지탈 처리수단을 구비하는 것을 특징으로 하는 장치.(d) digital processing means for demodulating the sampled narrowband digital signal. 제 1항에 있어서, 상기 디지탈 수단은 디지탈 발진기 수단, 디지탈 배율기/혼합기 수단 및 디지탈 협대역 필터 수단을 포함하는 것을 특징으로 하는 장치.2. The apparatus of claim 1, wherein the digital means comprises digital oscillator means, digital multiplier / mixer means and digital narrowband filter means. 희망 협대역 아나로그 신호를 포함하는 광대역 아나로그 신호를 실제 디지탈식으로 처리하는 방법으로서,A method of digitally processing a wideband analog signal including a desired narrowband analog signal, (a) 희망 협대역 아나로그 신호를 포함한 광대역 아나로그 신호를 수신 및 필터링하는 단계.(a) receiving and filtering a wideband analog signal including the desired narrowband analog signal. (b) 상기 광대역 아나로그 신호를 주기적으로 샘플링하여 이 신호를 샘플된 광대역 디지탈 신호를 변환시키는 단계.(b) periodically sampling the wideband analog signal to convert the sampled wideband digital signal. (c) 샘플된 광대역 디지탈 신호에서 희망 샘플된 협대역 디지탈 신호를 선택하는 단계 및,(c) selecting a desired sampled narrowband digital signal from the sampled wideband digital signal; (d) 상기 샘플된 협대역 디지탈 신호를 복조하는 단계를 구비하는 것을 특징으로 하는 방법.(d) demodulating the sampled narrowband digital signal. 제 3항에 있어서, 상기 선택 단계는 또한 디지탈 국부 발진기 신호를 발생하고, 샘플된 급신호를 발생하기 위해 디지탈 국부 발진기 신호를 샘플된 광대역 디지탈 신호로 배율하고, 샘플된 협대역 디지탈 신호를 발생하기 위해 샘플된 급 신호를 디지탈 협대역 필터링하는 단계를 구비하는 것을 특징으로 하는 방법.4. The method of claim 3, wherein the selecting step also generates a digital local oscillator signal, multiplies the digital local oscillator signal by a sampled wideband digital signal to generate a sampled rapid signal, and generates a sampled narrowband digital signal. And digital narrowband filtering the sampled class signal. 희망 협대역 신호를 포함하는 광대역 무선 주파수(RF)신호를 디지탈 처리하는 디지탈 장치로서,A digital device for digitally processing a wideband radio frequency (RF) signal including a desired narrowband signal, (a) 안테나 수단을 포함하여, 상기 광대역(RF) 신호를 포함한(RF) 신호를 수신하는 수단.(a) means for receiving an RF signal, including antenna means, comprising antenna means. (b) 상기 안테나 수단에 결합되어 상기 광대역(RF) 신호를 필터링하는 필터 수단.(b) filter means coupled to said antenna means for filtering said wideband (RF) signal. (c) 상기 필터 수단에 결합되어, 상기 광대역 RF 신호를 주기적으로 샘플링하여 이 신호를 샘플된 광대역 디지탈 신호를 변환시키는 디지트화 수단.(c) digitizing means coupled to the filter means for periodically sampling the wideband RF signal to convert the sampled wideband digital signal. (d) 상기 디지트화 수단에 결합되어, 샘플된 광대역 디지탈 신호에서 희망 샘플된 협대역 디지탈 신호를 선택하는 디지탈 수단 및.(d) digital means coupled to the digitizing means to select a desired sampled narrowband digital signal from the sampled wideband digital signal; (e) 상기 샘플된 협대역 디지탈 신호를 복조하는 디지탈 처리 수단을 구비하는 것을 특징으로 하는 장치.(e) digital processing means for demodulating the sampled narrowband digital signal. 제 5항에 있어서, 상기 디지탈 수단은 디지탈 직각 발진기, 디지탈 직각 배율기/혼합기 및 디지탈 직각 협대역 지역 통과 필터를 포함하는 것을 특징으로 하는 장치,6. The apparatus of claim 5, wherein the digital means comprises a digital quadrature oscillator, a digital quadrature multiplier / mixer, and a digital quadrature narrowband region pass filter, 희망 협대역 신호를 포함한 광대역 무선 주파수(RF)신호를 실제로 디지탈 처리하는 방법으로서,A method of actually digitally processing a wideband radio frequency (RF) signal including a desired narrowband signal, (a) 상기 광대역 RF 신호를 포함한 (RF) 신호를 수신하는 단계.(a) receiving an (RF) signal comprising the wideband RF signal. (b) 상기 광대역 RF 신호를 필터링하는 단계.(b) filtering the wideband RF signal. (c) 상기 여파된 광대역(RF)신호를 주기적으로 샘플링하여 이 신호를 샘플된 신호를 샘플된 광대역 디지탈 신호로 변환하는 단계.(c) periodically sampling the filtered wideband (RF) signal and converting the sampled signal into a sampled wideband digital signal. (d) 샘플된 광대역 디지탈 신호에서 희망 샘플된 협대역 디지탈 신호를 선택하는 단계 및,(d) selecting a desired sampled narrowband digital signal from the sampled wideband digital signal, and (e) 상기 샘플된 협대역 디지탈 신호를 디지탈식으로 복조하는 단계를 구비하는 것을 특징으로 하는 방법.(e) digitally demodulating the sampled narrowband digital signal. 제 7항에 있어서, 상기 선택 단계는 또한 디지탈 국부 발진기 신호를 발생하고, 샘플된 급신호를 발생하기 위해 디지탈 국부 발진기 신호를 샘플된 광대역 신호를 배율하고, 샘플된 협대역 디지탈 신호를 발생하도록 샘플된 급신호를 디지탈 협대역 필터링하는 단계를 포함하는 것을 특징으로 하는 방법.8. The method of claim 7, wherein the selecting step further generates a digital local oscillator signal, multiplies the digital local oscillator signal by a sampled wideband signal to generate a sampled rapid signal, and generates a sampled narrowband digital signal. And digital narrowband filtering the advanced signal. 수신된 각 피변조신호를 디지탈식으로 복조하는 방법으로서.A digital demodulation method for each received modulated signal. (a) 제로 주파수에서 거의 중심된 신호의 디지트화된 직각 샘플을 입력하고, 상기 샘플은 합성 신호 벡터를 표시함.(a) Input a digitized quadrature sample of a signal approximately centered at zero frequency, the sample representing a composite signal vector. (b) 소정의 범위내에서 상기 샘플을 희망 크기로 스케일링하고,(b) scaling the sample to a desired size within a predetermined range, (c) 스케일된 합성 신호 벡터가 존재하는 최근 접아크 탄젠트를 계산하고, 상기최근접 아크 탄젠트는 조악 위상 범위값을 구비함.(c) Compute the recent fold arc tangent in which the scaled composite signal vector is present, wherein the nearest arc tangent has a coarse phase range value. (d) -π/4에서 +π/4 범위내에 존재하도록 스케일된 합성 신호 벡터를 회전식으로 스케일링하고,(d) rotationally scale the composite signal vector scaled to be within the range -π / 4 to + π / 4, (e) 회전식으로 스케일된 신호 벡터의 위상 탄젠트와 동일한 제 2값을 계산하고,(e) calculating a second value equal to the phase tangent of the rotationally scaled signal vector, (f) 상기 제 2의 값의 아크 탄젠트를 유출하여 상기 제 3 값은 미세 위상각 값을 구비함.(f) outflowing the arc tangent of the second value such that the third value has a fine phase angle value. (g) 입력 신호 베터의 위상각과 동일한 합성 위상각 샘플을 발생하도록 미세 위상각 및 조악 위상각 값을 합산하고,(g) summing the fine phase angle and coarse phase angle values to produce a composite phase angle sample equal to the phase angle of the input signal bettor, (h) 일련의 복조된 메세지 샘플을 발생하도록 일련의 위상각 샘플을 필터링하고,(h) filter the series of phase angle samples to produce a series of demodulated message samples, (i) 상기 복조된 메세지 샘플을 출력 레지스터에 출력하는 단계를 구비하는 것을 특징으로 하는 방법.(i) outputting the demodulated message sample to an output register. 개선된 선형성을 갖는 디지탈 복조기 장치로서,A digital demodulator device with improved linearity, (a) 거의 제로 주파수에서 중심된 각각 신호를 구비한 샘플된 입력을 입력화하는 수단.(a) means for inputting sampled inputs having respective signals centered at a near zero frequency. (b) 소정의 범위내에서 상기 입력된 샘플된 직각 신호를 양자화하는 스케일러 수단.(b) scaler means for quantizing the input sampled quadrature signal within a predetermined range. (c) 각각 FM 신호입력 벡터에 관련된 현조악 위상값을 발생하는 위상 누산기 수단.(c) phase accumulator means for generating a coarse phase value associated with each FM signal input vector. (d) -π/4에서 +π/4범위에서 상기 입력 신호를 상한 으로 회전 시키는 벡터 회전 수단.(d) Vector rotation means for rotating the input signal to an upper limit in the range of -π / 4 to + π / 4. (e) 상기 회전된 입력 신호 벡터에 의해 미세위상값을 정하는 수단.(e) means for determining a microphase value from the rotated input signal vector. (f) 상기 미세 및 조악 위상값을 합산하여 위상값을 출력시키는 합산 수단 및,(f) summing means for summing the fine and coarse phase values to output a phase value; (g) 일련의복조된 메세지 샘플을 발생하도록 일련의 위상각 샘플을 필터링하는 수단을 구비하는 장치.(g) means for filtering the series of phase angle samples to produce a series of demodulated message samples. 수신된 FM 신호를 디지탈식으로 복조하는 방법으로서.A method of digitally demodulating a received FM signal. (a) 제로 주파수에서 거의 중심된 신호의디지트화된 직각 샘플을 입력하고, 상기 샘플은 합성 신호 벡터를 표시함.(a) Input a digitized quadrature sample of a signal approximately centered at zero frequency, the sample representing a composite signal vector. (b) 소정의 범위내에서 상기 샘플을 희망 크기로 스케일링하고,(b) scaling the sample to a desired size within a predetermined range, (c) 스케일된 합성신호 벡터가 존재하는 최근접아크, 탄젠트는 계산하고, 상기 최근접아크 탄젠트는 조악 위상 범위값을 구비함.(c) Calculate the nearest arc and tangent in which the scaled composite signal vector exists, and the nearest arc tangent has a coarse phase range value. (d) -π/4에서 +π/4의 범위내에 존재하도록 스케일된 합성 신호 벡터를 회전식으로 스케일링하고,(d) rotationally scale the composite signal vector scaled to be within the range of -π / 4 to + π / 4, (e) 회전식으로 스케일된 신호 벡터의 위상 탄젠트와 동일한 제 2 값을 계산하고,(e) calculating a second value equal to the phase tangent of the rotationally scaled signal vector, (f) 상기 제 2 값의 아크 탄젠트를 유출하여 상기 신호 벡터의 위상각과 동일한 제 3 값을 계산하고, 상기 제 3 값은 미세 위상각 값을 구비함.(f) outflowing the arc tangent of the second value to calculate a third value equal to the phase angle of the signal vector, the third value having a fine phase angle value. (g) 입력 신호 벡터의 위상각과 동일한 합성 위상각 샘플을 발생하도록 미세 위상각 및 조악 위상각 값으로 합산하고,(g) summing to fine phase angle and coarse phase angle values to produce a composite phase angle sample equal to the phase angle of the input signal vector, (h) 일련의복조된 메세지 샘플을 발생하도록 현합성 위성각 샘플값에서 사전 합성 위상각 값를 감산하고,(h) subtract the presynthetic phase angle value from the synthesized satellite angle sample value to generate a series of demodulated message samples, (i) 상기 복조된 메세지 샘플을 출력 레지스터에 출력하는 단계를 구비하는 것을 특징으로 하는 방법.(i) outputting the demodulated message sample to an output register. 개선된 선형성을 갖는 디지탈 FM 복조기 장치로서,A digital FM demodulator device with improved linearity, (a) 거의 제로 주파수에서 중심된 직각FM 디지탈 신호를 구비한 샘플된 입력 입력 벡터를 하는 수단.(a) Means for making a sampled input input vector with a quadrature FM digital signal centered at near zero frequency. (b) 소정의 범위내에서 상기입력된 샘플된 직각신호를 양자화 하는 스케일러 수단.(b) scaler means for quantizing the input sampled quadrature signal within a predetermined range. (c) 직각 FM 신호의 입력 벡터에 관련된 현 조악 위상값을 발생하는 위상 누산기 수단.(c) phase accumulator means for generating a coarse phase value associated with the input vector of the right angle FM signal. (d) -π/4에서 +π/4 범위에서 상기 입력 신호를 상한으로 회전 시키는 벡터 회전 수단.(d) vector rotation means for rotating the input signal to an upper limit in the range of -π / 4 to + π / 4. (e) 상기 회전된 입력 신호 벡터에의해 미세 위상값을 정하는 수단.(e) means for determining a fine phase value by the rotated input signal vector. (f) 상기 미세 및 조악 위상값을 합산하여 합성 위상값을 출력시키는 합산 수단 및.(f) summing means for summing the fine and coarse phase values to output a composite phase value; (g) 일련의 복조된 메세지 샘플을 방생하도록 현 합성 위상각 샘플 값에서 사전 합성 위상각 샘플값을 감산하는 필터링 수단을 구비하는 장치.(g) filtering means for subtracting the pre-synthetic phase angle sample value from the current composite phase angle sample value to produce a series of demodulated message samples. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR870700384A 1985-09-03 1986-08-25 Signal Processing Device and Method KR880700532A (en)

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