Spectral line suppression capabilities of spectral line free convolutional codes in UWB over fiber systems

Perez-Ramos, Aldo-Eleazar; Villarreal-Reyes, Salvador; Mondragón, Arturo Arvizu; Lepers, Catherine; Santos-Aguilar, Joel

doi:10.1002/mop.28424

Cited by 3 publications

(4 citation statements)

References 11 publications

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“…In this encoder, the power spectral density cannot exceed the spectral limit; even the input of the encoder consists of nonuniformly distributed binary numbers, with the result shown in Figure 3 b. In addition, Aldo et al [ 34 ] proposed a spectral line free (SLF) convolution encoded IR-UWB over a fiber system with higher transmission power to increase the transmission distance and reduce the BER.…”

Section: Encodermentioning

confidence: 99%

The Development and Progress of the UWB Physical Layer

Chen

et al. 2022

Micromachines

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Ultra-wideband (UWB) technology has been applied in many fields, such as radar and indoor positioning, because of its advantages of having a high transmission rate, anti-multipath interference, and good concealment. In the UWB physical layer, the transmitting link, including an encoder and a pulse generator, is used to improve the anti-interference ability of the signal, while the receiving link, including a receiver and a decoder, can correct the error signal. Therefore, the performance of the UWB physical layer can obviously affect the speed and quality of UWB signal transmission. In this paper, the structure and performance of the codec and transceiver of the UWB physical layer are introduced and compared. In addition, some typical architectures and features are summarized and discussed, which provides a valuable reference and suggestions for the design of the UWB physical layer. Finally, the outlook of the UWB physical layer is presented: its development direction mainly includes high speed, low power consumption, and fewer hardware resources.

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Section: Encodermentioning

confidence: 99%

The Development and Progress of the UWB Physical Layer

Chen

et al. 2022

Micromachines

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“…However the system also allows generate higher IF's, even in the millimeter‐waves range. The proposed scheme is based on a baseband UWB Gaussian‐shaped pulse, which is electrically generated; following the UWB parameters as reported in previous works . The baseband pulse modulates a narrow‐linewidth laser at λ 1 = 1550 nm traveling through a Mach‐Zehnder optical modulator (MZM).…”

Section: Scheme Of Up‐conversion For Ir‐uwbmentioning

confidence: 99%

“…Now, an important consideration to be taken into account is that a real pulse generator for impulsive‐radio uses a pulse train signal to transmit information and such a train introduces frequency harmonics in the PSD. Modulation and coding schemes for pulse data transmission modify the shape of the PSD so specific technics must be used to model the UWB PSD . In our setup (Fig.…”

Section: Up‐conversion Baseband Pulses By Photonic Beatingmentioning

confidence: 99%

“…Photonic pulse generators combining RF technologies in the electric domain and optical setups for transmit or modify short pulses are known as IR‐UWB over Fiber. Some representative examples include: (a) generation of UWB pulses and frequency up‐conversion using electric Gaussian pulses, dual MZ modulator and RF carrier ; (b) transmission of UWB pulses and PSD shaping using a MZ modulator and convolutional code, ; (c) summation of two monocycle pulses using cross‐phase modulation with a MZ modulated with an electric RF signal for generation of UWB pulses ; (d) high‐order UWB pulses generator based on an incoherent optical source and a microwave photonic filter ; (e) generation of millimeter‐wave UWB signal with two cascaded polarization modulators as a microwave photonic switch ; (f) millimeter‐wave generation UWB signal via frequency up‐conversion using fiber optical parametric amplifier ; (g) a baseband UWB pulse and an electric local oscillator drive a dual MZ for optical frequency conversion of UWB pulse.…”

Section: Introductionmentioning

confidence: 99%

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Photonic frequency up‐conversion of baseband pulses for IR‐UWB using optical beating and balanced coherent detection

Santos-Aguilar

Arturo

Gutiérrez‐Martínez

2016

Micro & Optical Tech Letters

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This article describes a photonic scheme that performs frequency up‐conversion of baseband pulses for potential applications on Impulse Radio‐Ultra Wideband systems. Mixing a laser modulated by a pulse with a wavelength‐tunable laser (local oscillator) and a coherent photodetection scheme we obtain high order pulses comparable with nth derivatives of a Gaussian pulse. With our approach is possible to perform the frequency translation of the baseband pulses so that UWB pulses within standardized UWB mask are obtained. Baseband components produced in the optical mixing are removed by using a balanced photodetection stage. Our scheme exploits two different microwave photonics technics (microwave generation and coherent detection) for accomplish a simple generator of high order pulses avoiding the use of complex schemes. Additionally, the scheme can be implemented with commercially available components and it is reconfigurable in a very simple way. The performance of the proposed scheme is analyzed and evaluated in this work.© 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2749–2755, 2016

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Design of Optical-Wireless IR-UWBoF Systems with Spectral Line Suppression Capabilities

et al. 2022

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Impulse-Radio Ultra-Wide Band (IR-UWB) over Fiber (IR-UWBoF) has been proposed to interconnect IR-UWB-based deployments separated by hundreds of meters or even kilometers. IR-UWB transmissions must comply with spectral masks provided by radio spectrum regulatory agencies. The maximum transmit power of an IR-UWB signal is adversely affected by the presence of spectral lines in its Power Spectral Density (PSD). Thus, it is desirable that the PSD of signals generated by IR-UWBoF systems does not show spectral lines. Previous works have shown the feasibility of deploying of optical-wireless IR-UWBoF systems. However, most of these proposals report PSDs showing spectral lines. To the best of our knowledge, spectral line suppression has not been previously studied for optical-wireless IR-UWBoF systems. This work shows the design and implementation of optical-wireless IR-UWBoF systems generating signals with Spectral Line-Free (SLF) PSDs. The proposal considers the use the use of a specifically designed convolutional code combined with Binary Phase Shift Keying (BPSK) or Quaternary Biorthogonal Pulse Position Modulation (Q-BOPPM) to provide a SLF PSD in IR-UWBoF systems. A testbed consisting of 30 km of single-mode optical fiber (SMF) concatenated to a 20 cm wireless link was physically implemented. The results show that a SLF PSD is achieved for both the optical and the wireless transmissions, even when the binary data source feeding the system is not perfectly random.

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Spectral line suppression capabilities of spectral line free convolutional codes in UWB over fiber systems

Cited by 3 publications

References 11 publications

The Development and Progress of the UWB Physical Layer

The Development and Progress of the UWB Physical Layer

Photonic frequency up‐conversion of baseband pulses for IR‐UWB using optical beating and balanced coherent detection

Design of Optical-Wireless IR-UWBoF Systems with Spectral Line Suppression Capabilities

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