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Project / GLANCES

Project: Generalized Linear Amplification with Nonlinear Components for Power and Spectral Efficient Broadband Wireless Systems

Acronym: GLANCES
Main Objective:
Broadband wireless systems require high power and spectral efficiencies, and transmission over severely time-dispersive channels. Developing on the concept of Linear Amplification with Non- Linear Components (LINC), the main technical objective of the project is to design, implement and validate a new set of digital transmission techniques with high power and spectral efficiency for future wireless broadband systems to be employed in the uplink of mobile systems or in satellite communications.
Our main goal is to design signals with low Peak-to-Average Power Ratio (PAPR) or even quasi-constant envelope and high spectral efficiency, employing amplification techniques based on low- cost, highly efficient grossly NonLinear (NL) amplifiers (e.g., class D and E amplifiers), which are simpler and have higher amplification and output power then quasi-linear amplifiers. Since a grossly NL amplifier is only suitable for signals with quasi-constant envelope, we will develop new signal designs and/or transmission techniques compatible with grossly NL amplifiers.
This research project combines theoretical development (including signal and receiver design), CMOS implementation of key components (with emphasis on matched amplifiers and output power combination with minimum losses) and FPGA-based implementation for an overall system’s proof of concept, for the most promising techniques.
Reference: P01229
Funding: IT/LA
Start Date: 01-04-2014
End Date: 01-04-2016
Team: Marco Alexandre Cravo Gomes, Rui Miguel Henriques Dias Morgado Dinis, Vitor Manuel Mendes da Silva, Francisco Antonio Bucho Cercas, Paulo Miguel Araújo Borges Montezuma de Carvalho, Luís Oliveira, João Oliveira
Groups: Multimedia Signal Processing – Co, Radio Systems – Lx
Partners: CTS-UNINOVA
Local Coordinator: Marco Alexandre Cravo Gomes

Associated Publications
  • 4Papers in Journals
  • J. Guerreiro, R. Dinis, PMC Carvalho, Analytical Characterization and Optimum Performance of Nonlinearly Distorted Coherent Optical OFDM Signals, International Journal of Microwave and Optical Technology, Vol. 10, No. 2, pp. 132 - 142, March, 2015 | BibTex
  • J. Guerreiro, R. Dinis, PMC Carvalho, Analytical Characterization and Optimum Performance of Nonlinearly Distorted Coherent Optical OFDM Signals, International Journal of Microwave and Optical Technology, Vol. 10, No. 2, pp. 132 - 142, March, 2015 | BibTex
  • J. F. T. Teles, P. Bento, M. Gomes, R. Dinis, V. Silva, Block-windowed burst OFDM: a high-efficiency multicarrier technique, Electronics Letters, Vol. 50, No. 23, pp. 1757 - 1759, November, 2014,
    | Abstract     | BibTex
  • J. F. T. Teles, P. Bento, M. Gomes, R. Dinis, V. Silva, Block-windowed burst OFDM: a high-efficiency multicarrier technique, Electronics Letters, Vol. 50, No. 23, pp. 1757 - 1759, November, 2014,
    | Abstract     | BibTex
  • 19Papers in Conferences
  • M. Castanheira, A. S. Simões, M. Gomes, R. Dinis, V. Silva, Iterative Decoding Techniques for Ring-type Magnitude Modulated Signals, IEEE Communications Society IEEE International Conference on Communications ICC, Kuala Lumpur, Malaysia, Vol. -, pp. - - -, May, 2016,
    | Abstract     | BibTex
  • A. S. Simões, P. Bento, M. Gomes, R. Dinis, V. Silva, Ring-type Magnitude Modulation for OQPSK: Enabling NL-Amplification of Spectral Efficient Signals, Vehicular Technology Conference: VTC-Spring, Nanjing, China, Vol. --, pp. -- - --, May, 2016,
    | Abstract     | BibTex
  • R. Dinis, PMC Carvalho, P. Bento, M. Gomes, V. Silva, Linear Amplification with Multiple Amplifiers and Antennas, IASTED International Conf. on Modelling, Identification and Control - MIC, Innsbruck, Austria, Vol. 1, pp. 1 - 5, February, 2016,
    | Abstract     | BibTex
  • A. S. Simões, P. Bento, M. Gomes, R. Dinis, V. Silva, Efficient LINC Amplification for 5G Through Ring-type Magnitude Modulation, IEEE Globecom 2015 Workshop on Mobile Communications in Higher Frequency Bands (MCHFB), San Diego, United States, Vol. --, pp. -- - --, December, 2015,
    | Abstract     | Full text (PDF 3 MBs) | BibTex
  • J. Guerreiro, R. Dinis, PMC Carvalho, A Simplified Method for Evaluating Clipping Effects on Sampled OFDM Signals, IEEE Vehicular Technology Conf. - VTC-Fall, Boston, United States, Vol. 1, pp. 1 - 5, September, 2015 | BibTex
  • J. Guerreiro, R. Dinis, PMC Carvalho, Optimum Performance and Spectral Characterization of CE-OFDM Signals, IEEE Vehicular Technology Conf. - VTC-Fall, Boston, United States, Vol. 1, pp. 1 - 5, September, 2015 | BibTex
  • J. Guerreiro, R. Dinis, PMC Carvalho, A Simplified Method for Evaluating Clipping Effects on Sampled OFDM Signals, IEEE Vehicular Technology Conf. - VTC-Fall, Boston, United States, Vol. 1, pp. 1 - 5, September, 2015 | BibTex
  • J. Guerreiro, R. Dinis, PMC Carvalho, A Simple Method for the Analytical Characterization of OFDM Schemes with LINC Transmitter Structures, IEEE International Symp. on Wireless Communication Systems - ISWCS, Bruxels, Belgium, Vol. 1, pp. 1 - 5, August, 2015 | BibTex
  • J. Guerreiro, R. Dinis, PMC Carvalho, A Simple Method for the Analytical Characterization of OFDM Schemes with LINC Transmitter Structures, IEEE International Symp. on Wireless Communication Systems - ISWCS, Bruxels, Belgium, Vol. 1, pp. 1 - 5, August, 2015 | BibTex
  • PMC Carvalho, S. Ribeiro Ribeiro, M. Silva, R. Dinis, Smart Receiver for Multi-antenna Transmitters with Constellation Shaping, Progress in Electromagnetics Research Symp. - PIERS, Prague, Czech Republic, Vol. 1, pp. 1 - 9, July, 2015,
    | Abstract     | BibTex
  • P. Bento, M.B. Beko, J. F. T. Teles, M. Gomes, R. Dinis, V. Silva, PAPR Reduction of Coded OFDM Signals, International Conf. on Wireless Networks, Las Vegas, United States, Vol. -, pp. - - -, July, 2015,
    | Abstract     | BibTex
  • , J. F. C. Gante, M. Gomes, R. Dinis, V. Silva, Towards an Enhanced Frequency Reuse: Base Station Cooperation with Turbo Frequency Domain Receivers, IEEE International Conference on Communications - ICC, London, United Kingdom, Vol. -, pp. - - -, June, 2015,
    | Abstract     | BibTex
  • , J. F. C. Gante, M. Gomes, R. Dinis, V. Silva, Clustered Multiuser Detection using SC-FDE Transmission with Iterative Receivers, Vehicular Technology Conference: VTC-Spring, Glasgow, United Kingdom, Vol. -, pp. - - -, May, 2015,
    | Abstract     | BibTex
  • M. Gomes, R. Dinis, V. Silva, Cercas, F. Cercas, L. A. C. Oliveira, Iterative Frequency-Domain Equalization for General QAM Constellations with Reduced Envelope Fluctuations through Magnitude Modulation Techniques, Vehicular Technology Conference: VTC-Spring, Glasgow, United Kingdom, Vol. -, pp. - - -, May, 2015,
    | Abstract     | BibTex
  • , R. Dinis, P. Bento, PMC Carvalho, M. Gomes, V. Silva, A Multi-Antenna Technique for mm-wave Communications with Large Constellations and Strongly Nonlinear Amplifiers, German Microwave Conf. - GeMiC, Nuremberg, Germany, Vol. -, pp. - - -, March, 2015,
    | Abstract     | BibTex
  • J. Guerreiro, R. Dinis, PMC Carvalho, An Efficient Method for Modelling and Evaluating Quantization Effects on Gaussian Signals, IASTED International Conf. on Modelling, Identification and Control - MIC, Innsbruck, Austria, Vol. 1, pp. 1 - 5, February, 2015 | BibTex
  • , R. Dinis, PMC Carvalho, P. Bento, M. Gomes, V. Silva, A Massive MIMO Architecture for Highly Efficient mm-Wave Communications with Saturated Amplifiers, International Conf. on Electronics, Information and Communication - ICEIC, Singapore, Singapore, Vol. -, pp. - - -, January, 2015,
    | Abstract     | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, Joint Equalization and Phase Drift Estimation for Underwater Acoustic Communications, IEEE Global Communications Conference - GLOBECOM, Austin, TX, United States, Vol. -, pp. - - -, December, 2014 | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, Joint Equalization and Phase Drift Compensation for the Underwater Acoustic Channel, IEEE Vehicular Technology Conf. - VTC-Fall, Vancouver, Canada, Vol. -, pp. - - -, September, 2014 | BibTex
  • 3Patents
  • M. Gomes, V. Silva, R. Dinis, PMC Carvalho, P. Bento, Método de transmissão com dupla directividade, PT108149, National, Granted, 14-01-2015, Portugal,
    | Abstract
  • M. Gomes, V. Silva, R. Dinis, PMC Carvalho, A. J. R. S. Simões, Transmissor LINC com eficiência melhorada para sinais de banda limitada, PT107875, National, Granted, 08-09-2014, Portugal,
    | Abstract
  • M. Gomes, V. Silva, R. Dinis, PMC Carvalho, A. J. R. S. Simões, Sistema e método para efectuar controlo de envolvente em anel em sinais modulados com offset e banda limitada, PT107874, National, Granted, 08-09-2014, Portugal,
    | Abstract
  • 1Theses
  • Peak-to-Average Power in Orthogonal Frequency Division Multiplexing Systems, Universidade de Coimbra, MSc Student, Pedro Daniel Rosete Bento, Supervisor: M. Gomes, Co-supervisor: V. Silva, out-2013 - set-2014
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