The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
O comportamento estatístico da distribuição de probabilidade de amplitude da interferência de distorção de intermodulação em sistemas de TV a cabo óptico multicanal foi investigado experimentalmente. Na transmissão multicanal, a não linearidade de um diodo laser (LD) ou de um amplificador elétrico pode causar distorção de intermodulação (batida composta de segunda ordem; CSO, batida tripla composta; CTB, etc.). Embora tenha sido discutida como distorção de corte a laser, a distorção de intermodulação geralmente é distorção de portadoras AM-VSB. A análise estatística e avaliação da distorção no canal transmitido é controversa. Avaliamos a distorção em 20 canais 16-QAM multiplexados por divisão de frequência, com cada portadora transportando 80 Mbps para um sistema de TV a cabo óptico. Primeiramente enumeramos os componentes de distorção que causam interferência em cada canal de transmissão para identificar os produtos de intermodulação. Em seguida, em canais selecionados, medimos com precisão a potência de cada tipo de distorção e as distribuições de amplitude da distorção de intermodulação de portadoras senoidais e moduladas digitalmente na TV a cabo em função da profundidade de modulação óptica (OMD) do LD. E esclarecemos como a função de distribuição de probabilidade (PDF) mudou à medida que o OMD aumentou. Além disso, o desempenho BER de um sinal 16-QAM foi medido e comparado com o comportamento de intermodulação das diferentes fontes de distorção. Encontramos evidências de que a distribuição de amplitude da distorção de intermodulação das portadoras digitais difere daquela do ruído térmico. Resultados experimentais mostraram que a PDF da distorção de intermodulação mudou quando a proporção de distorção de intermodulação entre todos os sinais indesejados variou com o OMD. O desempenho do BER variou com a intermodulação de portadoras analógicas e digitais, mesmo quando a relação de potência entre portadora e ruído de interferência (CIR) é a mesma.
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Naoyoshi NAKAMURA, Takuya KURAKAKE, Yasuhiro ITO, Mikio MAEDA, Kimiyuki OYAMADA, "Amplitude Probability Distribution of Intermodulation Distortion in Multichannel Digital Optical Cable Transmission" in IEICE TRANSACTIONS on Communications,
vol. E82-B, no. 8, pp. 1154-1161, August 1999, doi: .
Abstract: The statistical behavior of the amplitude probability distribution of intermodulation distortion interference in multichannel optical-cable TV systems was experimentally investigated. In multichannel transmission, the non-linearity of a laser diode (LD) or an electrical amplifier can cause intermodulation distortion (composite-second-order beat; CSO, composite-triple-beat; CTB, etc. ). Even though it has been discussed as laser-clipping distortion, intermodulation distortion is usually distortion from AM-VSB carriers. The statistical analysis and evaluation of the distortion in transmitted channel is in controversial. We evaluated the distortion in 20 frequency-division-multiplexed 16-QAM channels, with each carrier carrying 80 Mbps for an optical cable TV system. We first enumerated the distortion components causing interference in each transmission channel so as to identify the intermodulation products. Then, in selected channels, we precisely measured the power of each kind of distortion and the amplitude distributions of the intermodulation distortion from sinusoidal and digital-modulated carriers on cable TV as a function of optical modulation depth (OMD) of LD. And we clarified how the probability distribution function (PDF) changed as the OMD increased. Also, the BER performance of a 16-QAM signal was measured and compare to the intermodulation behavior of the different distortion sources. We found evidence that the amplitude distribution of intermodulation distortion from digital carriers differs from that of thermal noise. Experimental results showed that the PDF of the intermodulation distortion changed when the ratio of intermodulation distortion among all undesired signals varied with the OMD. The BER performance varied with intermodulation of both analogue and digital carriers even when the carrier to interference noise power ratio (CIR) is the same.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e82-b_8_1154/_p
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@ARTICLE{e82-b_8_1154,
author={Naoyoshi NAKAMURA, Takuya KURAKAKE, Yasuhiro ITO, Mikio MAEDA, Kimiyuki OYAMADA, },
journal={IEICE TRANSACTIONS on Communications},
title={Amplitude Probability Distribution of Intermodulation Distortion in Multichannel Digital Optical Cable Transmission},
year={1999},
volume={E82-B},
number={8},
pages={1154-1161},
abstract={The statistical behavior of the amplitude probability distribution of intermodulation distortion interference in multichannel optical-cable TV systems was experimentally investigated. In multichannel transmission, the non-linearity of a laser diode (LD) or an electrical amplifier can cause intermodulation distortion (composite-second-order beat; CSO, composite-triple-beat; CTB, etc. ). Even though it has been discussed as laser-clipping distortion, intermodulation distortion is usually distortion from AM-VSB carriers. The statistical analysis and evaluation of the distortion in transmitted channel is in controversial. We evaluated the distortion in 20 frequency-division-multiplexed 16-QAM channels, with each carrier carrying 80 Mbps for an optical cable TV system. We first enumerated the distortion components causing interference in each transmission channel so as to identify the intermodulation products. Then, in selected channels, we precisely measured the power of each kind of distortion and the amplitude distributions of the intermodulation distortion from sinusoidal and digital-modulated carriers on cable TV as a function of optical modulation depth (OMD) of LD. And we clarified how the probability distribution function (PDF) changed as the OMD increased. Also, the BER performance of a 16-QAM signal was measured and compare to the intermodulation behavior of the different distortion sources. We found evidence that the amplitude distribution of intermodulation distortion from digital carriers differs from that of thermal noise. Experimental results showed that the PDF of the intermodulation distortion changed when the ratio of intermodulation distortion among all undesired signals varied with the OMD. The BER performance varied with intermodulation of both analogue and digital carriers even when the carrier to interference noise power ratio (CIR) is the same.},
keywords={},
doi={},
ISSN={},
month={August},}
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TY - JOUR
TI - Amplitude Probability Distribution of Intermodulation Distortion in Multichannel Digital Optical Cable Transmission
T2 - IEICE TRANSACTIONS on Communications
SP - 1154
EP - 1161
AU - Naoyoshi NAKAMURA
AU - Takuya KURAKAKE
AU - Yasuhiro ITO
AU - Mikio MAEDA
AU - Kimiyuki OYAMADA
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E82-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 1999
AB - The statistical behavior of the amplitude probability distribution of intermodulation distortion interference in multichannel optical-cable TV systems was experimentally investigated. In multichannel transmission, the non-linearity of a laser diode (LD) or an electrical amplifier can cause intermodulation distortion (composite-second-order beat; CSO, composite-triple-beat; CTB, etc. ). Even though it has been discussed as laser-clipping distortion, intermodulation distortion is usually distortion from AM-VSB carriers. The statistical analysis and evaluation of the distortion in transmitted channel is in controversial. We evaluated the distortion in 20 frequency-division-multiplexed 16-QAM channels, with each carrier carrying 80 Mbps for an optical cable TV system. We first enumerated the distortion components causing interference in each transmission channel so as to identify the intermodulation products. Then, in selected channels, we precisely measured the power of each kind of distortion and the amplitude distributions of the intermodulation distortion from sinusoidal and digital-modulated carriers on cable TV as a function of optical modulation depth (OMD) of LD. And we clarified how the probability distribution function (PDF) changed as the OMD increased. Also, the BER performance of a 16-QAM signal was measured and compare to the intermodulation behavior of the different distortion sources. We found evidence that the amplitude distribution of intermodulation distortion from digital carriers differs from that of thermal noise. Experimental results showed that the PDF of the intermodulation distortion changed when the ratio of intermodulation distortion among all undesired signals varied with the OMD. The BER performance varied with intermodulation of both analogue and digital carriers even when the carrier to interference noise power ratio (CIR) is the same.
ER -