Frequency Spread

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Amer Baghdadi - One of the best experts on this subject based on the ideXlab platform.

  • A Block FBMC Receiver Designed For Short Filters
    2018
    Co-Authors: Jérémy Nadal, François Leduc-primeau, Charbel Abdel Nour, Amer Baghdadi
    Abstract:

    In this paper, a new filter-bank multi-carrier(FBMC) receiver targeted at short prototype filters (PFs) is presented. In addition to the typical advantages of FBMC modulation such as improved Frequency containment and support of relaxed synchronization, the proposed receiver enables accurate one-tap equalization of the signal despite the use of a short PF, while significantly reducing the complexity by merging the equalization and the standard FBMC receiver. An adapted frame structure is proposed that occupies the same radio resources as a 4G/LTE orthogonal Frequency-division multiplexing (OFDM) frame while providing a similar data rate. Moreover, this frame structure is shown to readily support block-based Alamouti-coded multiple-input multiple-output transmissions. Simulation results show that the proposed FBMC receiver can outperform an OFDM system on 4G/LTE channel models in both single antenna and Alamouti configurations, while having a better robustness to synchronization errors than a Frequency-Spread FBMC receiver.

  • design and evaluation of a novel short prototype filter for fbmc oqam modulation
    IEEE Access, 2018
    Co-Authors: Jérémy Nadal, Charbel Abdel Nour, Amer Baghdadi
    Abstract:

    Filter-bank multi-carrier with offset quadrature amplitude modulation (FBMC/OQAM) is considered by recent research projects as one of the key enablers for the future 5G air interface. It exhibits better spectral shape and improves mobility support compared to orthogonal Frequency-division multiplexing (OFDM) thanks to the use of a time and Frequency localized prototype filter. The choice of this filter is crucial for FBMC/OQAM, due to its substantial impact on achieved performance and complexity levels. In the context of 5G, short frame sizes are foreseen in several communication scenarios to reduce system latency, and therefore short filters are preferred. In this context, a novel short filter allowing for near perfect reconstruction and having the same size as one OFDM symbol is proposed. Using Frequency-Spread (FS) implementation for the FBMC/OQAM receiver, analytical analysis and simulation results show that the proposed filter exhibits better robustness to several types of channel impairments when compared to state-of-the-art prototype filters and OFDM modulation. In addition, FS-based hardware architecture of the filtering stage is proposed, showing lower complexity than the classical polyphase network-based implementation.

  • Design and Evaluation of a Novel Short Prototype Filter for FBMC/OQAM Modulation
    IEEE Access, 2018
    Co-Authors: Jérémy Nadal, Charbel Abdel Nour, Amer Baghdadi
    Abstract:

    Filter-bank multi-carrier with offset quadrature amplitude modulation (FBMC/OQAM) is considered by recent research projects as one of the key enablers for the future 5G air interface. It exhibits better spectral shape and improves mobility support compared to orthogonal Frequency-division multiplexing (OFDM) thanks to the use of a time and Frequency localized prototype filter. The choice of this filter is crucial for FBMC/OQAM, due to its substantial impact on achieved performance and complexity levels. In the context of 5G, short frame sizes are foreseen in several communication scenarios to reduce system latency, and therefore short filters are preferred. In this context, a novel short filter allowing for near perfect reconstruction and having the same size as one OFDM symbol is proposed. Using Frequency-Spread (FS) implementation for the FBMC/OQAM receiver, analytical analysis and simulation results show that the proposed filter exhibits better robustness to several types of channel impairments when compared to state-of-the-art prototype filters and OFDM modulation. In addition, FS-based hardware architecture of the filtering stage is proposed, showing lower complexity than the classical polyphase network-based implementation.

A Baschirotto - One of the best experts on this subject based on the ideXlab platform.

  • an fsk modulator at 23 2 mhz with 0 9 accuracy for the usb power delivery standard
    International Symposium on Circuits and Systems, 2015
    Co-Authors: Antonio Damico, Angelo Nagari, P Malcovati, A Baschirotto
    Abstract:

    This paper presents an FSK modulator suitable for a transmitter chain within the new USB Power Delivery standard. The proposed solution performs a binary FSK modulation using a relaxation voltage-controlled oscillator with a voltage averaging feedback. A reference proportional to supply is used to compensate real-time Frequency variations, whereas the Frequency Spread due to the process is corrected by an 8bit trimming system. The considered input signal bit rate is 300 kbps and the carrier Frequency is 23.2 MHz with ±0.5 MHz Frequency deviation. The proposed modulator grants ±0.9% accuracy against PVT Spread by consuming 1.2 mW and phase noise at 20kHz from the carrier lower than −56 dBc/Hz.

  • ISCAS - An FSK modulator at 23.2 MHz with ±0.9% accuracy for the USB power delivery standard
    2015 IEEE International Symposium on Circuits and Systems (ISCAS), 2015
    Co-Authors: Antonio D'amico, Angelo Nagari, P Malcovati, A Baschirotto
    Abstract:

    This paper presents an FSK modulator suitable for a transmitter chain within the new USB Power Delivery standard. The proposed solution performs a binary FSK modulation using a relaxation voltage-controlled oscillator with a voltage averaging feedback. A reference proportional to supply is used to compensate real-time Frequency variations, whereas the Frequency Spread due to the process is corrected by an 8bit trimming system. The considered input signal bit rate is 300 kbps and the carrier Frequency is 23.2 MHz with ±0.5 MHz Frequency deviation. The proposed modulator grants ±0.9% accuracy against PVT Spread by consuming 1.2 mW and phase noise at 20kHz from the carrier lower than −56 dBc/Hz.

Jérémy Nadal - One of the best experts on this subject based on the ideXlab platform.

  • A Block FBMC Receiver Designed For Short Filters
    2018
    Co-Authors: Jérémy Nadal, François Leduc-primeau, Charbel Abdel Nour, Amer Baghdadi
    Abstract:

    In this paper, a new filter-bank multi-carrier(FBMC) receiver targeted at short prototype filters (PFs) is presented. In addition to the typical advantages of FBMC modulation such as improved Frequency containment and support of relaxed synchronization, the proposed receiver enables accurate one-tap equalization of the signal despite the use of a short PF, while significantly reducing the complexity by merging the equalization and the standard FBMC receiver. An adapted frame structure is proposed that occupies the same radio resources as a 4G/LTE orthogonal Frequency-division multiplexing (OFDM) frame while providing a similar data rate. Moreover, this frame structure is shown to readily support block-based Alamouti-coded multiple-input multiple-output transmissions. Simulation results show that the proposed FBMC receiver can outperform an OFDM system on 4G/LTE channel models in both single antenna and Alamouti configurations, while having a better robustness to synchronization errors than a Frequency-Spread FBMC receiver.

  • design and evaluation of a novel short prototype filter for fbmc oqam modulation
    IEEE Access, 2018
    Co-Authors: Jérémy Nadal, Charbel Abdel Nour, Amer Baghdadi
    Abstract:

    Filter-bank multi-carrier with offset quadrature amplitude modulation (FBMC/OQAM) is considered by recent research projects as one of the key enablers for the future 5G air interface. It exhibits better spectral shape and improves mobility support compared to orthogonal Frequency-division multiplexing (OFDM) thanks to the use of a time and Frequency localized prototype filter. The choice of this filter is crucial for FBMC/OQAM, due to its substantial impact on achieved performance and complexity levels. In the context of 5G, short frame sizes are foreseen in several communication scenarios to reduce system latency, and therefore short filters are preferred. In this context, a novel short filter allowing for near perfect reconstruction and having the same size as one OFDM symbol is proposed. Using Frequency-Spread (FS) implementation for the FBMC/OQAM receiver, analytical analysis and simulation results show that the proposed filter exhibits better robustness to several types of channel impairments when compared to state-of-the-art prototype filters and OFDM modulation. In addition, FS-based hardware architecture of the filtering stage is proposed, showing lower complexity than the classical polyphase network-based implementation.

  • Design and Evaluation of a Novel Short Prototype Filter for FBMC/OQAM Modulation
    IEEE Access, 2018
    Co-Authors: Jérémy Nadal, Charbel Abdel Nour, Amer Baghdadi
    Abstract:

    Filter-bank multi-carrier with offset quadrature amplitude modulation (FBMC/OQAM) is considered by recent research projects as one of the key enablers for the future 5G air interface. It exhibits better spectral shape and improves mobility support compared to orthogonal Frequency-division multiplexing (OFDM) thanks to the use of a time and Frequency localized prototype filter. The choice of this filter is crucial for FBMC/OQAM, due to its substantial impact on achieved performance and complexity levels. In the context of 5G, short frame sizes are foreseen in several communication scenarios to reduce system latency, and therefore short filters are preferred. In this context, a novel short filter allowing for near perfect reconstruction and having the same size as one OFDM symbol is proposed. Using Frequency-Spread (FS) implementation for the FBMC/OQAM receiver, analytical analysis and simulation results show that the proposed filter exhibits better robustness to several types of channel impairments when compared to state-of-the-art prototype filters and OFDM modulation. In addition, FS-based hardware architecture of the filtering stage is proposed, showing lower complexity than the classical polyphase network-based implementation.

Antonio D'amico - One of the best experts on this subject based on the ideXlab platform.

  • ISCAS - An FSK modulator at 23.2 MHz with ±0.9% accuracy for the USB power delivery standard
    2015 IEEE International Symposium on Circuits and Systems (ISCAS), 2015
    Co-Authors: Antonio D'amico, Angelo Nagari, P Malcovati, A Baschirotto
    Abstract:

    This paper presents an FSK modulator suitable for a transmitter chain within the new USB Power Delivery standard. The proposed solution performs a binary FSK modulation using a relaxation voltage-controlled oscillator with a voltage averaging feedback. A reference proportional to supply is used to compensate real-time Frequency variations, whereas the Frequency Spread due to the process is corrected by an 8bit trimming system. The considered input signal bit rate is 300 kbps and the carrier Frequency is 23.2 MHz with ±0.5 MHz Frequency deviation. The proposed modulator grants ±0.9% accuracy against PVT Spread by consuming 1.2 mW and phase noise at 20kHz from the carrier lower than −56 dBc/Hz.

Inigo J. Losada - One of the best experts on this subject based on the ideXlab platform.

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