Gabriel campuzano - Academia.edu (original) (raw)

Papers by Gabriel campuzano

2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)

Intercarrier interference severely limits orthogonal frequency-division multiplexing (OFDM) perfo... more Intercarrier interference severely limits orthogonal frequency-division multiplexing (OFDM) performance. Nevertheless, it can be mitigated by using Nyquist-I pulse shaping filters. In OFDM-based systems, we assess the exponential linear (EL) pulse and compare it with the best Nyquist-I pulses. EL pulse is characterized by having one additional design parameter, known as β. It is first optimized through extensive numerical simulations. We discovered that EL pulse outperforms the rest of pulses in terms of the bit error rate. This finding was explained by its frequency response, which presents both a broad main-lobe and negligible lateral-lobes. For all pulse shaping functions, we finally determined the signal-to-noise ratio and frequency offset requirements in a real scenario.

2019 21st International Conference on Transparent Optical Networks (ICTON)

Coherent passive optical networks (PONs) employing orthogonal frequency division modulation (OFDM... more Coherent passive optical networks (PONs) employing orthogonal frequency division modulation (OFDM) have emerged as a promising candidate for the implementation of future long-reach high-capacity optical access infrastructure. In addition to the improved receiver sensitivity, coherent systems allow advanced vectorial modulation formats and, thus, make a more efficient use of the spectrum. Mitigation of the phase noise, however, is still a challenge that must be addressed in low-cost access systems. In OFDM systems, in particular, pilot-aided equalization can be employed to efficiently combat this impairment. In this work, we present extensive simulation results to optimize a 100-km LR-PON with 10-Gbps capacity in terms of the number of subcarriers and pilots, as well as the relative power of the pilots. These results reveal that 64 subcarriers, being 10 of them pilots, and a relative amplitude of 1.8 leads to a BER of 4.736×10−4.

2017 IEEE 9th Latin-American Conference on Communications (LATINCOM)

It is well-know that carrier frequency offset in the subcarriers of orthogonal frequency division... more It is well-know that carrier frequency offset in the subcarriers of orthogonal frequency division multiplexing (OFDM) leads to intercarrier interference (ICI); therefore, system degradation occurs. Nevertheless, this issue may effectively be mitigated via the pulse shaping filter method. In this manuscript, we present the improved double jump linear combination (IDJLC) function. With the goal of minimizing the bit error rate (BER), we then optimize it by employing its extra design parameters. Finally, our filter is compared with some of the best and most recent filters found in the literature in terms of ICI, signal to interference ratio, signal to noise ratio and normalized frequency offset requirements at a BER threshold of 10∼3, frequency profile, and average elapsed time. In general, the performance of the system is improved by using the IDJLC pulse.

Revista Mexicana De Fisica, 2006

La reflectometria optica de baja coherencia ha sido aplicada a la caracterizacion de nuevos compo... more La reflectometria optica de baja coherencia ha sido aplicada a la caracterizacion de nuevos componentes opticos utilizados en sistemas de telecomunicaciones emergentes. Esta tecnica no destructiva y versatil, permite la deteccion, localizacion y cuantificacion de discontinuidades existentes en los componentes fotonicos, obteniendo asi una informacion precisa y directa sobre las propiedades opticas de dichos componentes.

C. Palavicini, Y. Jaou¨en y P. GallionEcole Nationale Superieure des T´ ´el ´ecommunications, D ´... more C. Palavicini, Y. Jaou¨en y P. GallionEcole Nationale Superieure des T´ ´el ´ecommunications, D ´epartement Communications et Electronique,46, rue Barrault, 75634 Paris Cedex 13, Francia,´e-mail: carlos.palavicini@enst.fr, jaouen@enst.fr, gallion@enst.frG. CampuzanoInstituto Tecnologico y de Estudios Superiores de Monterrey, Centro de Electr´ onica y Telecomunicaciones,´Av. Eugenio Garza Sada 2501 Sur, 64849, Monterrey, N.L., M´exico,e-mail: campuzano@itesm.mx

15th International Conference on Optical Network Design and Modeling - ONDM 2011, 2011

Simulation results of the OSNR performance of an optical switch/router are presented in this pape... more Simulation results of the OSNR performance of an optical switch/router are presented in this paper. The paper is completed with a cascadability analysis, which takes into account the optical link that joins the nodes, and some results that show the effects of the scheduling algorithm on the optical performance.

2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON), 2017

It is well known that the performance of orthogonal frequency division multiplexing is highly sen... more It is well known that the performance of orthogonal frequency division multiplexing is highly sensitive to frequency offset. In this paper, we present theoretical results to assess the intercarrier interference reduction using general pulse shaping filters in digital video broadcasting over cable (DVB-C) systems. These pulses are characterized by only one design parameter, known as the roll-off factor. We found that for the DVB standard, which employs a raised cosine (RC) function, double-jump 1 (DJ1) filter outperforms the RC pulse as well as the rest of pulses in terms of both the bit error rate and the signal-to-interference ratio power. This is because the DJ1 pulse spectra presents the smallest lateral lobes and a broad main lobe.

La generation de signaux RF, basee sur la transmission et le battement de signaux optiques de fre... more La generation de signaux RF, basee sur la transmission et le battement de signaux optiques de frequences differentes et de phases fortement correlees, est une des techniques attractives pour la provision des reseaux radio sur fibre. La synchronisation optique de deux lasers esclaves sur differentes bandes laterales de modulation d’un meme laser maitre accomplit la correlation de phase. L'approche theorique, d’un cote, consiste a analyser les performances d’une telle liaison optique ou le bruit de phase de la porteuse RF generee est calcule. Il est determine que les transmissions sans erreur, a une porteuse de 60 GHz modulee en QPSK 155 Mbps sur des distances ~15 km, sont faisables, pourvu que la dispersion chromatique de la fibre soit compensee par un retard differentiel entre les deux lasers esclaves. D’un autre cote, une methode basee sur la theorie des ondes couplees pour decrire les variations optiquement induites de la frequence et du gain des lasers a reaction distribuee p...

A major drawback of orthogonal frequency division multiplexing (OFDM) is the frequency offset sen... more A major drawback of orthogonal frequency division multiplexing (OFDM) is the frequency offset sensitivity. It mainly leads to inter-carrier interference, which can effectively be reduced by employing the pulse shaping filter method. In this manuscript, we present and then optimize the improved double-jump 1 (IDJ1) pulse for digital video broadcasting over cable 2 OFDM systems. Our function is finally compared with various Nyquist-I pulses found in the literature in terms of the bit error rate. IDJ1 filter outperforms the rest of filters since its frequency profile has not only a no-narrow main-lobe but also negligible side-lobes.

The heterodyne beating of two laser signals synchronized on different modulation sidebands of ano... more The heterodyne beating of two laser signals synchronized on different modulation sidebands of another laser results in a spectrally pure radio frequency signal when the lasers spectra, injection rate, and frequency detuning are simultaneously optimized.

Optical injection locking of semiconductor lasers has attracted significant attention due to its ... more Optical injection locking of semiconductor lasers has attracted significant attention due to its applications in laser analysis, modulation characteristic enhancement, and nonlinear dynamics. In many cases, the analysis of the optically injected laser is done by simulation, requiring an accurate laser model and, therefore, an adequate modeling of the gain compression at high photon densities. We use the Kobayashi-Lang rate equations to numerically compare the stable locking range considering four different gain models. Results reveal that at low bias currents, gain compression is significant only under weak injection regime. In contrast, for higher bias current, gain compression must be considered both in weak and strong injection regimes.

Optics Letters

A novel nonlinear equalizer based on a multiple-input multiple-output (MIMO) deep neural network ... more A novel nonlinear equalizer based on a multiple-input multiple-output (MIMO) deep neural network (DNN) is proposed and experimentally demonstrated for compensation of inter-subcarrier nonlinearities in a 40 Gb/s coherent optical orthogonal frequency division multiplexing system. Experimental results reveal that MIMO-DNN can extend the power margin by 4 dB at 2000 km of standard single-mode fiber transmission when compared to linear compensation or conventional single-input single-output DNN. It is also found that MIMO-DNN outperforms digital back propagation by increasing up to 1 dB the effectiveQ-factor and reducing by a factor of three the computational cost.

Journal of Optical Communications and Networking

High-speed demand driven by bandwidth-consuming applications, such as video streaming and cloud c... more High-speed demand driven by bandwidth-consuming applications, such as video streaming and cloud computing, is exceeding available network capacity, forcing operators to implement innovative technologies to increase the throughput offered to end users. In particular, passive optical networks (PONs) with a full-duplex capacity of 10 Gb/s over a 40-km span are expected to be developed shortly. However, the range of such systems is severely penalized due to fiber and splitter losses. To increase the transmission distance of PONs, coherent optical (CO) communications have regained attention. Orthogonal frequency division multiplexing (OFDM) has been proposed as a modulation format due to its robustness to chromatic dispersion, high spectral efficiency, and flexibility. The high peak-to-average ratio of OFDM signals, however, makes them very vulnerable to fiber nonlinear distortion. In this paper, we propose what we believe is a novel, low-complexity equalizer based on the inverse Hammerstein model to partially compensate for the nonlinear distortion in CO-OFDM PONs. Numerical simulations using the split-step Fourier transform method reveal a potential link increase of 20 and 5 km for bit rates of 10 and 40 Gb/s, respectively, when compared to linear equalization.

Optical and Quantum Electronics

2009 3rd ICTON Mediterranean Winter Conference (ICTON-MW), 2009

2015 IEEE Photonics Conference (IPC), 2015

We present a novel feeding architecture based on a hybrid mode locked laser capable of steering t... more We present a novel feeding architecture based on a hybrid mode locked laser capable of steering the radiation beam of a 16-element phased array antenna operating in the 60-GHz band.

2015 IEEE Photonics Conference (IPC), 2015

We study and analyze the effect of injection conditions on periodic and aperiodic pulsation regim... more We study and analyze the effect of injection conditions on periodic and aperiodic pulsation regimes close to the negative static boundary of an optically injected semiconductor laser.

International Journal of Antennas and Propagation, 2015

Given the interference avoidance capacity, high gain, and dynamical reconfigurability, phased arr... more Given the interference avoidance capacity, high gain, and dynamical reconfigurability, phased array antennas (PAAs) have emerged as a key enabling technology for future broadband mobile applications. This is especially important at millimeter-wave (mm-wave) frequencies, where the high power consumption and significant path loss impose serious range constraints. However, at mm-wave frequencies the phase and amplitude control of the feeding currents of the PAA elements is not a trivial issue because electrical beamforming requires bulky devices and exhibits relatively narrow bandwidth. In order to overcome these limitations, different optical beamforming architectures have been presented. In this paper we review the basic principles of phased arrays and identify the main challenges, that is, integration of high-speed photodetectors with antenna elements and the efficient optical control of both amplitude and phase of the feeding current. After presenting the most important solutions f...

2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)

Intercarrier interference severely limits orthogonal frequency-division multiplexing (OFDM) perfo... more Intercarrier interference severely limits orthogonal frequency-division multiplexing (OFDM) performance. Nevertheless, it can be mitigated by using Nyquist-I pulse shaping filters. In OFDM-based systems, we assess the exponential linear (EL) pulse and compare it with the best Nyquist-I pulses. EL pulse is characterized by having one additional design parameter, known as β. It is first optimized through extensive numerical simulations. We discovered that EL pulse outperforms the rest of pulses in terms of the bit error rate. This finding was explained by its frequency response, which presents both a broad main-lobe and negligible lateral-lobes. For all pulse shaping functions, we finally determined the signal-to-noise ratio and frequency offset requirements in a real scenario.

2019 21st International Conference on Transparent Optical Networks (ICTON)

Coherent passive optical networks (PONs) employing orthogonal frequency division modulation (OFDM... more Coherent passive optical networks (PONs) employing orthogonal frequency division modulation (OFDM) have emerged as a promising candidate for the implementation of future long-reach high-capacity optical access infrastructure. In addition to the improved receiver sensitivity, coherent systems allow advanced vectorial modulation formats and, thus, make a more efficient use of the spectrum. Mitigation of the phase noise, however, is still a challenge that must be addressed in low-cost access systems. In OFDM systems, in particular, pilot-aided equalization can be employed to efficiently combat this impairment. In this work, we present extensive simulation results to optimize a 100-km LR-PON with 10-Gbps capacity in terms of the number of subcarriers and pilots, as well as the relative power of the pilots. These results reveal that 64 subcarriers, being 10 of them pilots, and a relative amplitude of 1.8 leads to a BER of 4.736×10−4.

2017 IEEE 9th Latin-American Conference on Communications (LATINCOM)

It is well-know that carrier frequency offset in the subcarriers of orthogonal frequency division... more It is well-know that carrier frequency offset in the subcarriers of orthogonal frequency division multiplexing (OFDM) leads to intercarrier interference (ICI); therefore, system degradation occurs. Nevertheless, this issue may effectively be mitigated via the pulse shaping filter method. In this manuscript, we present the improved double jump linear combination (IDJLC) function. With the goal of minimizing the bit error rate (BER), we then optimize it by employing its extra design parameters. Finally, our filter is compared with some of the best and most recent filters found in the literature in terms of ICI, signal to interference ratio, signal to noise ratio and normalized frequency offset requirements at a BER threshold of 10∼3, frequency profile, and average elapsed time. In general, the performance of the system is improved by using the IDJLC pulse.

Revista Mexicana De Fisica, 2006

La reflectometria optica de baja coherencia ha sido aplicada a la caracterizacion de nuevos compo... more La reflectometria optica de baja coherencia ha sido aplicada a la caracterizacion de nuevos componentes opticos utilizados en sistemas de telecomunicaciones emergentes. Esta tecnica no destructiva y versatil, permite la deteccion, localizacion y cuantificacion de discontinuidades existentes en los componentes fotonicos, obteniendo asi una informacion precisa y directa sobre las propiedades opticas de dichos componentes.

C. Palavicini, Y. Jaou¨en y P. GallionEcole Nationale Superieure des T´ ´el ´ecommunications, D ´... more C. Palavicini, Y. Jaou¨en y P. GallionEcole Nationale Superieure des T´ ´el ´ecommunications, D ´epartement Communications et Electronique,46, rue Barrault, 75634 Paris Cedex 13, Francia,´e-mail: carlos.palavicini@enst.fr, jaouen@enst.fr, gallion@enst.frG. CampuzanoInstituto Tecnologico y de Estudios Superiores de Monterrey, Centro de Electr´ onica y Telecomunicaciones,´Av. Eugenio Garza Sada 2501 Sur, 64849, Monterrey, N.L., M´exico,e-mail: campuzano@itesm.mx

15th International Conference on Optical Network Design and Modeling - ONDM 2011, 2011

Simulation results of the OSNR performance of an optical switch/router are presented in this pape... more Simulation results of the OSNR performance of an optical switch/router are presented in this paper. The paper is completed with a cascadability analysis, which takes into account the optical link that joins the nodes, and some results that show the effects of the scheduling algorithm on the optical performance.

2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON), 2017

It is well known that the performance of orthogonal frequency division multiplexing is highly sen... more It is well known that the performance of orthogonal frequency division multiplexing is highly sensitive to frequency offset. In this paper, we present theoretical results to assess the intercarrier interference reduction using general pulse shaping filters in digital video broadcasting over cable (DVB-C) systems. These pulses are characterized by only one design parameter, known as the roll-off factor. We found that for the DVB standard, which employs a raised cosine (RC) function, double-jump 1 (DJ1) filter outperforms the RC pulse as well as the rest of pulses in terms of both the bit error rate and the signal-to-interference ratio power. This is because the DJ1 pulse spectra presents the smallest lateral lobes and a broad main lobe.

La generation de signaux RF, basee sur la transmission et le battement de signaux optiques de fre... more La generation de signaux RF, basee sur la transmission et le battement de signaux optiques de frequences differentes et de phases fortement correlees, est une des techniques attractives pour la provision des reseaux radio sur fibre. La synchronisation optique de deux lasers esclaves sur differentes bandes laterales de modulation d’un meme laser maitre accomplit la correlation de phase. L'approche theorique, d’un cote, consiste a analyser les performances d’une telle liaison optique ou le bruit de phase de la porteuse RF generee est calcule. Il est determine que les transmissions sans erreur, a une porteuse de 60 GHz modulee en QPSK 155 Mbps sur des distances ~15 km, sont faisables, pourvu que la dispersion chromatique de la fibre soit compensee par un retard differentiel entre les deux lasers esclaves. D’un autre cote, une methode basee sur la theorie des ondes couplees pour decrire les variations optiquement induites de la frequence et du gain des lasers a reaction distribuee p...

A major drawback of orthogonal frequency division multiplexing (OFDM) is the frequency offset sen... more A major drawback of orthogonal frequency division multiplexing (OFDM) is the frequency offset sensitivity. It mainly leads to inter-carrier interference, which can effectively be reduced by employing the pulse shaping filter method. In this manuscript, we present and then optimize the improved double-jump 1 (IDJ1) pulse for digital video broadcasting over cable 2 OFDM systems. Our function is finally compared with various Nyquist-I pulses found in the literature in terms of the bit error rate. IDJ1 filter outperforms the rest of filters since its frequency profile has not only a no-narrow main-lobe but also negligible side-lobes.

The heterodyne beating of two laser signals synchronized on different modulation sidebands of ano... more The heterodyne beating of two laser signals synchronized on different modulation sidebands of another laser results in a spectrally pure radio frequency signal when the lasers spectra, injection rate, and frequency detuning are simultaneously optimized.

Optical injection locking of semiconductor lasers has attracted significant attention due to its ... more Optical injection locking of semiconductor lasers has attracted significant attention due to its applications in laser analysis, modulation characteristic enhancement, and nonlinear dynamics. In many cases, the analysis of the optically injected laser is done by simulation, requiring an accurate laser model and, therefore, an adequate modeling of the gain compression at high photon densities. We use the Kobayashi-Lang rate equations to numerically compare the stable locking range considering four different gain models. Results reveal that at low bias currents, gain compression is significant only under weak injection regime. In contrast, for higher bias current, gain compression must be considered both in weak and strong injection regimes.

Optics Letters

A novel nonlinear equalizer based on a multiple-input multiple-output (MIMO) deep neural network ... more A novel nonlinear equalizer based on a multiple-input multiple-output (MIMO) deep neural network (DNN) is proposed and experimentally demonstrated for compensation of inter-subcarrier nonlinearities in a 40 Gb/s coherent optical orthogonal frequency division multiplexing system. Experimental results reveal that MIMO-DNN can extend the power margin by 4 dB at 2000 km of standard single-mode fiber transmission when compared to linear compensation or conventional single-input single-output DNN. It is also found that MIMO-DNN outperforms digital back propagation by increasing up to 1 dB the effectiveQ-factor and reducing by a factor of three the computational cost.

Journal of Optical Communications and Networking

High-speed demand driven by bandwidth-consuming applications, such as video streaming and cloud c... more High-speed demand driven by bandwidth-consuming applications, such as video streaming and cloud computing, is exceeding available network capacity, forcing operators to implement innovative technologies to increase the throughput offered to end users. In particular, passive optical networks (PONs) with a full-duplex capacity of 10 Gb/s over a 40-km span are expected to be developed shortly. However, the range of such systems is severely penalized due to fiber and splitter losses. To increase the transmission distance of PONs, coherent optical (CO) communications have regained attention. Orthogonal frequency division multiplexing (OFDM) has been proposed as a modulation format due to its robustness to chromatic dispersion, high spectral efficiency, and flexibility. The high peak-to-average ratio of OFDM signals, however, makes them very vulnerable to fiber nonlinear distortion. In this paper, we propose what we believe is a novel, low-complexity equalizer based on the inverse Hammerstein model to partially compensate for the nonlinear distortion in CO-OFDM PONs. Numerical simulations using the split-step Fourier transform method reveal a potential link increase of 20 and 5 km for bit rates of 10 and 40 Gb/s, respectively, when compared to linear equalization.

Optical and Quantum Electronics

2009 3rd ICTON Mediterranean Winter Conference (ICTON-MW), 2009

2015 IEEE Photonics Conference (IPC), 2015

We present a novel feeding architecture based on a hybrid mode locked laser capable of steering t... more We present a novel feeding architecture based on a hybrid mode locked laser capable of steering the radiation beam of a 16-element phased array antenna operating in the 60-GHz band.

2015 IEEE Photonics Conference (IPC), 2015

We study and analyze the effect of injection conditions on periodic and aperiodic pulsation regim... more We study and analyze the effect of injection conditions on periodic and aperiodic pulsation regimes close to the negative static boundary of an optically injected semiconductor laser.

International Journal of Antennas and Propagation, 2015

Given the interference avoidance capacity, high gain, and dynamical reconfigurability, phased arr... more Given the interference avoidance capacity, high gain, and dynamical reconfigurability, phased array antennas (PAAs) have emerged as a key enabling technology for future broadband mobile applications. This is especially important at millimeter-wave (mm-wave) frequencies, where the high power consumption and significant path loss impose serious range constraints. However, at mm-wave frequencies the phase and amplitude control of the feeding currents of the PAA elements is not a trivial issue because electrical beamforming requires bulky devices and exhibits relatively narrow bandwidth. In order to overcome these limitations, different optical beamforming architectures have been presented. In this paper we review the basic principles of phased arrays and identify the main challenges, that is, integration of high-speed photodetectors with antenna elements and the efficient optical control of both amplitude and phase of the feeding current. After presenting the most important solutions f...