In telecommunications, the carrier-to-noise ratio, often written CNR or C/N, is the signal-to-noise ratio (SNR) of a modulated signal. The term is used to distinguish the CNR of the radio frequency passband signal from the SNR of an analog base band message signal after demodulation. For example, with FM radio, the strength of the 100 MHz carrier with modulations would be considered for CNR, whereas the audio frequency analogue message signal would be for SNR; in each case, compared to the apparent noise. If this distinction is not necessary, the term SNR is often used instead of CNR, with the same definition.
| Attributes | Values |
|---|
| rdf:type
| |
| rdfs:label
| - Carrier-to-noise ratio (en)
- 반송파 대 잡음비 (ko)
- 搬送波対雑音比 (ja)
|
| rdfs:comment
| - 반송파 대 잡음비(영어: Carrier to Noise Ratio, CNR)는 하드디스크, 광디스크 등의 정보 저장 매체에서 중요한 재생 신호 품질 지수이다. 측정의 방법은 신호(반송파)를 표본 추출하여 푸리에 변환하면 진폭과 주파수의 그래프를 얻고 특정 신호 주파수의 진폭과 배경 잡음 진폭의 차이를 측정함으로 이루어진다. 측정의 단위는 데시벨로 편의상 진폭비를 로그 함수로 표시한 것을 읽는 것이다. 즉, CNR = 20 log (반송파/잡음) (dB) (ko)
- 搬送波対雑音比（はんそうはたいざつおんひ、英: Carrier-to-noise ratio）は電気通信における変調信号の信号対雑音比 (SNR)。 CNR や C/N とも書かれる。 この言葉は無線周波数のパスバンド信号のCNRと、例えば可聴周波数のアナログメッセージ信号といった復調後のアナログベースバンドメッセージ信号のSNRと区別するために用いられる。区別する必要がない場合はSNRがCNRの代わりに同じ定義の言葉として用いられることがよくある。 ディジタル変調信号 (例えばQAM や PSK) は基本的に2つの連続搬送波 (位相のずれた搬送波であるI と Q成分) からなる。実際、情報 (ビットや符号) はI と Q成分の位相および/もしくは振幅の所与の組み合わせにより搬送される。この理由により、ディジタル変調の文脈においては、ディジタル変調された信号は普通、搬送波と呼ばれる。よって、信号対雑音比 (SNR) の代わりに使われる搬送波対雑音比 (CNR) という用語は、信号がディジタル変調されたときに信号の質を表現するのに好ましい言葉である。 高い C/N 比は、例えばディジタルメッセージ信号の低い符号誤り率 (BER) やアナログメッセージ信号の高いSNRなど、良い受信品質をもたらす。 (ja)
- In telecommunications, the carrier-to-noise ratio, often written CNR or C/N, is the signal-to-noise ratio (SNR) of a modulated signal. The term is used to distinguish the CNR of the radio frequency passband signal from the SNR of an analog base band message signal after demodulation. For example, with FM radio, the strength of the 100 MHz carrier with modulations would be considered for CNR, whereas the audio frequency analogue message signal would be for SNR; in each case, compared to the apparent noise. If this distinction is not necessary, the term SNR is often used instead of CNR, with the same definition. (en)
|
| dct:subject
| |
| Wikipage page ID
| |
| Wikipage revision ID
| |
| Link from a Wikipage to another Wikipage
| |
| Link from a Wikipage to an external page
| |
| sameAs
| |
| dbp:wikiPageUsesTemplate
| |
| date
| |
| title
| - Digital Transmission: Carrier-to-Noise Ratio, Signal-to-Noise Ratio, and Modulation Error Ratio (en)
|
| url
| |
| has abstract
| - In telecommunications, the carrier-to-noise ratio, often written CNR or C/N, is the signal-to-noise ratio (SNR) of a modulated signal. The term is used to distinguish the CNR of the radio frequency passband signal from the SNR of an analog base band message signal after demodulation. For example, with FM radio, the strength of the 100 MHz carrier with modulations would be considered for CNR, whereas the audio frequency analogue message signal would be for SNR; in each case, compared to the apparent noise. If this distinction is not necessary, the term SNR is often used instead of CNR, with the same definition. Digitally modulated signals (e.g. QAM or PSK) are basically made of two CW carriers (the I and Q components, which are out-of-phase carriers). In fact, the information (bits or symbols) is carried by given combinations of phase and/or amplitude of the I and Q components. It is for this reason that, in the context of digital modulations, digitally modulated signals are usually referred to as carriers. Therefore, the term carrier-to-noise-ratio (CNR), instead of signal-to-noise-ratio (SNR), is preferred to express the signal quality when the signal has been digitally modulated. High C/N ratios provide good quality of reception, for example low bit error rate (BER) of a digital message signal, or high SNR of an analog message signal. (en)
- 반송파 대 잡음비(영어: Carrier to Noise Ratio, CNR)는 하드디스크, 광디스크 등의 정보 저장 매체에서 중요한 재생 신호 품질 지수이다. 측정의 방법은 신호(반송파)를 표본 추출하여 푸리에 변환하면 진폭과 주파수의 그래프를 얻고 특정 신호 주파수의 진폭과 배경 잡음 진폭의 차이를 측정함으로 이루어진다. 측정의 단위는 데시벨로 편의상 진폭비를 로그 함수로 표시한 것을 읽는 것이다. 즉, CNR = 20 log (반송파/잡음) (dB) (ko)
- 搬送波対雑音比（はんそうはたいざつおんひ、英: Carrier-to-noise ratio）は電気通信における変調信号の信号対雑音比 (SNR)。 CNR や C/N とも書かれる。 この言葉は無線周波数のパスバンド信号のCNRと、例えば可聴周波数のアナログメッセージ信号といった復調後のアナログベースバンドメッセージ信号のSNRと区別するために用いられる。区別する必要がない場合はSNRがCNRの代わりに同じ定義の言葉として用いられることがよくある。 ディジタル変調信号 (例えばQAM や PSK) は基本的に2つの連続搬送波 (位相のずれた搬送波であるI と Q成分) からなる。実際、情報 (ビットや符号) はI と Q成分の位相および/もしくは振幅の所与の組み合わせにより搬送される。この理由により、ディジタル変調の文脈においては、ディジタル変調された信号は普通、搬送波と呼ばれる。よって、信号対雑音比 (SNR) の代わりに使われる搬送波対雑音比 (CNR) という用語は、信号がディジタル変調されたときに信号の質を表現するのに好ましい言葉である。 高い C/N 比は、例えばディジタルメッセージ信号の低い符号誤り率 (BER) やアナログメッセージ信号の高いSNRなど、良い受信品質をもたらす。 (ja)
|
| gold:hypernym
| |
| prov:wasDerivedFrom
| |
| page length (characters) of wiki page
| |
| foaf:isPrimaryTopicOf
| |
| is Link from a Wikipage to another Wikipage
of | |
![[RDF Data]](/fct/images/sw-rdf-blue.png)
![[cxml]](/fct/images/cxml_doc.png)
![[csv]](/fct/images/csv_doc.png)
![[text]](/fct/images/ntriples_doc.png)
![[turtle]](/fct/images/n3turtle_doc.png)
![[ld+json]](/fct/images/jsonld_doc.png)
![[rdf+json]](/fct/images/json_doc.png)
![[rdf+xml]](/fct/images/xml_doc.png)
![[atom+xml]](/fct/images/atom_doc.png)
![[html]](/fct/images/html_doc.png)