All Stories

  1. Sidelobe Suppression for Multicarrier Signals via Structured Spectral Precoding

    Article • IEEE Transactions on Communications, January 2024, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  2. Frequency-Selective Hybrid Beamforming For Mmwave Full-Duplex

    Article • June 2023, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  3. Joint Precoder and Window Design for OFDM Sidelobe Suppression

    Article • IEEE Communications Letters, December 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  4. Full-Duplex mmWave MIMO With Finite-Resolution Phase Shifters

    Article • IEEE Transactions on Wireless Communications, November 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  5. Orthogonal precoding with memory for sidelobe suppression in OFDM

    Article • August 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  6. General Form of the Power Spectral Density of Multicarrier Signals

    Article • IEEE Communications Letters, August 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  7. Hybrid Beamforming Designs for Frequency-Selective mmWave MIMO Systems With Per-RF Chain or Per-Antenna Power Constraints

    Article • IEEE Transactions on Wireless Communications, August 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  8. Memory Tricks: Improving Active Interference Cancellation for Out-of-Band Power Reduction in OFDM

    Article • September 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  9. Analog Beamforming for Full-Duplex mmWave Communication with Low-Resolution Phase Shifters

    Article • June 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  10. Mask-Compliant Orthogonal Precoding for Spectrally Efficient OFDM

    Article • IEEE Transactions on Communications, March 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  11. Full-Duplex mmWave Communication with Hybrid Precoding and Combining

    Article • January 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  12. Robustness analysis of beamforming based designs for mmWave Full-Duplex Amplify-and-Forward relays

    Article • December 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  13. Energy-Efficient Analog Beamforming with Short Packets in Millimeter-Wave MIMO Systems

    Article • November 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  14. Two-level frame precoding with non-cooperative gateways

    Article • EURASIP Journal on Wireless Communications and Networking, July 2020, Springer Science + Business Media

    Roberto Lopez-Valcarce

  15. Optimal Window Design for W-OFDM

    Article • May 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  16. Low-Rank Data Matrix Recovery With Missing Values And Faulty Sensors

    Article • September 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  17. Ofdm Spectral Precoding With Per-Subcarrier Distortion Constraints

    Article • September 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  18. Analog beamforming for Full-Duplex Millimeter Wave Communication

    Article • August 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  19. Beamformer design for Full-Duplex Amplify-and-Forward Millimeter Wave relays

    Article • August 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  20. Flexible Spectral Precoding for Sidelobe Suppression in OFDM Systems

    Article • May 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  21. Frequency-selective Hybrid Precoding and Combining for Mmwave Mimo Systems with Per-antenna Power Constraints

    Article • May 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  22. Maximally stationary window design for overlap-add based random vibration synthesis

    Article • Mechanical Systems and Signal Processing, May 2019, Elsevier

    Roberto Lopez-Valcarce

  23. Partial-Duplex Amplify-and-Forward Relaying: Spectral Efficiency Analysis Under Self-Interference

    Article • IEEE Transactions on Wireless Communications, April 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  24. Expectation–maximisation based distributed estimation in sensor networks

    Article • March 2019, the Institution of Engineering and Technology (the IET)

    Roberto Lopez-Valcarce

  25. MMSE Filter Design for Full-duplex Filter-and-forward MIMO Relays under Limited Dynamic Range

    Article • Signal Processing, March 2019, Elsevier

    Roberto Lopez-Valcarce

  26. Distributed Precoding Systems in Multi-Gateway Multibeam Satellites

    Article • October 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Roberto Lopez-Valcarce

  27. Defending surveillance sensor networks against data-injection attacks via trusted nodes

    Article • August 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  28. Online EM-based distributed estimation in sensor networks with faulty nodes

    Article • August 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  29. Bandwidth allocation in partial duplex relaying

    Article • July 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  30. Design of data-injection adversarial attacks against spatial field detectors

    Article • June 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  31. Attack detectors for data aggregation in clustered sensor networks

    Article • August 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  32. Multipath cancellation in broadband acoustic local positioning systems

    Article • May 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  33. Distributed tls estimation under random data faults

    Article • April 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  34. Spectrum cartography using quantized observations

    Article • April 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  35. A greedy topology design to accelerate consensus in broadcast wireless sensor networks

    Article • Information Processing Letters, March 2015, Elsevier

    Roberto Lopez-Valcarce

  36. Improving area coverage of wireless sensor networks via controllable mobile nodes: A greedy approach

    Article • Journal of Network and Computer Applications, February 2015, Elsevier

    Roberto Lopez-Valcarce

  37. Detecting misreporting attacks to the proportional fair scheduler

    Article • December 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Jorge F. Schmidt, Roberto Lopez-Valcarce

  38. Nearly-optimal compression matrices for signal power estimation

    Article • June 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  39. Distributed Total Least Squares estimation over networks

    Article • May 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  40. Spectrum sensing in time-varying channels using multiple antennas

    Article • June 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  41. Compressive wideband spectrum sensing with spectral prior information

    Article • May 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  42. A diffusion-based distributed em algorithm for density estimation in wireless sensor networks

    Article • May 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  43. Detection of Gaussian signals in unknown time-varying channels

    Article • August 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  44. A two-objective evolutionary approach based on topological constraints for node localization in wireless sensor networks

    Article • Applied Soft Computing, July 2012, Elsevier

    Roberto Lopez-Valcarce

  45. Detection of unknown constant magnitude signals in time-varying channels

    Article • May 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  46. Generalized matched filter detector for fast fading channels

    Article • March 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  47. Multiantenna Spectrum Sensing Exploiting Spectral a priori Information

    Article • IEEE Transactions on Wireless Communications, December 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  48. Spectrum Sensing Exploiting Guard Bands and Weak Channels

    Article • IEEE Transactions on Signal Processing, December 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  49. Distributed spectrum sensing with multiantenna sensors under calibration errors

    Article • June 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  50. Detection diversity of multiantenna spectrum sensors

    Article • May 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  51. Blind ℓ1-norm-based phase estimation for cross-QAM robust to finite precision effects

    Article • Signal Processing, November 2010, Elsevier

    Roberto Lopez-Valcarce

  52. Frequency estimation of real-valued single-tone in colored noise using multiple autocorrelation lags

    Article • Signal Processing, July 2010, Elsevier

    Roberto Lopez-Valcarce

  53. Multiantenna spectrum sensing for Cognitive Radio: overcoming noise uncertainty

    Article • June 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  54. Closed-form real single-tone frequency estimator based on a normalized IIR notch filter

    Article • Signal Processing, June 2010, Elsevier

    Roberto Lopez-Valcarce

  55. Multiantenna spectrum sensing: Detection of spatial correlation among time-series with unknown spectra

    Article • March 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  56. Cramer-Rao lower bound and EM algorithm for envelope-based SNR estimation of nonconstant modulus constellations

    Article • IEEE Transactions on Communications, June 2009, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  57. SNR Estimation with Heterogeneous Frames

    Article • August 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  58. Distributed estimation with noisy exchanges

    Article • July 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  59. Maximum Likelihood SNR estimation for asynchronously oversampled OFDM signals

    Article • July 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  60. Iterative envelope-based SNR estimation for nonconstant modulus constellations

    Article • June 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  61. Blind Carrier Phase Estimation for Non-Equiprobable Constellations

    Article • July 2006, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  62. Toward a Theory of Multirate Nonlinear Systems

    Article • July 2006, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  63. Second-order blind algorithms for adaptive recursive linear equalizers: analysis and lattice implementation

    Article • International Journal of Adaptive Control and Signal Processing, January 2006, Wiley

    Roberto Lopez-Valcarce

  64. Analysis of the prewhitened constant modulus cost function

    Article • May 2002, Institute of Electrical & Electronics Engineers (IEEE)

    Roberto Lopez-Valcarce

  65. Stable estimates in equation error identification: An open problem

    Article • January 1999, Springer Science + Business Media

    Roberto Lopez-Valcarce

  66. New schemes and theoretical analysis of the master-slave family of recursive identification algorithms

    Article • Signal Processing, April 1997, Elsevier

    Roberto Lopez-Valcarce