Journals

  1. 1. H. D. Hristov, H. Carrasco, R. Feick and G. S. Kirov, “Broadband two port X antenna array with flat reflector for polarization diversity actions”, Microwave and Optical Technology Letters, Vol. 52, Issue 12, pp. 2833-2837, Dec. 2010.
  2. 1. Y. J. Fan, B. L. Ooi, H. D. Hristov and M. S. Leong, “Compound diffractive lens consisting of Fresnel zone plate and frequency selective screen”, IEEE Trans. Antennas and Propagation, Vol. 58 Nº 6, June 2010, pp. 1842-1847.
  3. 1. H. D. Hristov, M.S. Leong, M. B. Perotoni, G. S. Kirov and W. Grote, “Waveguide-fed backfire antennas for low-terahertz frequencies”, JAE-Journal of Applied Electromagnetism, Vol. 11, Nº 2, Dec. 2009, pp. 34-44.
  4. L. Szczecinski, A. Alvarado, R. Feick, “Distribution of Max-log metrics for QAM-based BICM in fading channels”,IEEE Transactions on Communications, vol. 57, Nº 9, September 2009, pp. 2558-2563.
  5. L. Szczecinski, A. Alvarado, M. Benjillali, R. Feick and L. Ahumada. “Distribution of L-values in gray-mapped M2-QAM: Closed-form approximations and applications”, IEEE Transactions on Communications, Vol. 57, Nº 7, July 2009, pp. 2071-2079.
  6. G. S. Kirov. H. D. Hristov & R. Feick. “Backfire disk-on-rod antenna for long-range point-to-point communications”, Microwave Journal, Vol. 52, Nº 6, June 2009, pp. 64-
  7. C. Hermosilla, R. A. Valenzuela, R. Feick. “Empirical Comparison of MIMO and Beamforming schemes for Outdoor-Indoor scenarios”, IEEE Transactions on Wireless Communications, Vol. 8, Nº 3, March 2009, pp. 1139-1143.
  8. L. Szczecinski, R. Feick, A. Cerón. “Mapping rearraggement for HARQ based on low-order modulation”, IEEE Transactions on Communications, Vol. 57, Nº 5, May 2009, pp. 1351-1358.
  9. C. Hermosilla, R. Feick, R. A. Valenzuela, L. Ahumada. “Improving MIMO capacity with directive antennas for outdoor-indoor scenarios”, IEEE Transactions on Wireless Communications, Vol. 8, Nº 5, May 2009, pp. 2177-2181.
  10. M. S. Derpich. “A bound on the MSE of oversampled dithered quantization with feedback”, IEEE Signal Processing Letters, Vol. 16, Nº 6, June 2009, pp. 541-544.
  11. H. D. Hristov, H. Carrasco, R. Feick, L. B. oOI. “Low profile X antenna with flat reflector for polarization diversity application”, Microwave and Optical Technology Letters, Vol. 51, Nº 6, June 2009, pp. 1508-1512.
  12. L. Ahumada, R. Feick, R. A. Valenzuela, C. Hermosilla. “Measured improvement of indoor coverage for fixed wireless loops with multiple antenna receivers”, IEEE Antennas and Wireless Propagation Letters, Vol. 7, pp. 485-488. 2008
  13. W. Grote, A. Grote & I. Delgado. “IEEE 802.11 goodput analysis for mixed real-time and data traffic for home networks”, Annals of Telecommunications, Institut TELECOM and Springer-Verlag France, Vol. 53, N° 9/10, Sep.-Oct. 2008, pp. 463-471.
  14. K. Al Agha, W. Grote, Y. Takahashi. “Home networking: Performance and architecture challenges”, Annals of Telecommunications, Institut TELECOM and Springer-Verlag France, Vol. 53, N° 9/10, Sep.-Oct. 2008, pp. 453-454.
  15. H. D. Hristov, W. Grote and R. Feick. “Antenna Passive Repeaters for Indoor Recovery of Microwave Cellular Signals”, Microwave Journal, Vol. 51, N° 9, September 2008.
  16. R. Bettancourt, L. Szczecinski and R. Feick, “BER Evaluation of BICM-ID via Bonferroni-Type Bounds”, IEEE Transactions on Vehicular Technology, Vol. 57, N° 5, September 2008, pp. 2815-2821.
  17. B. L. Ooi, Irene Ang, X. C. Shan, Albert Lu, R. Feick and H. D. Hristov, “Wide-Slot Waveguide Antenna on LTCC Technology”, Microwave and Optical Technology Letters, Vol. 5, N° 8, Agosto 2008, pp. 2181-2184.
  18. H. D. Hristov, H. Carrascoand R. Feick, “Bent Inverted-F Antenna for WLAN Units”, Microwave and Optical Technology Letters, Vol. 50, N° 6, June 2008, pp. 1505-1509.
  19. B. L. Ooi, M. S. Leong, Z. Shong, Y. Wang, S. C. Hui, H. Hristov and R. Feick, “An EBG Spatial Power Combiner”. Microwave and Optical Technology Letters, Vol. 50 N° 5, June 2008, pp. 1534-1536.
  20. B. L. Ooi, Y. J. Fan, H. D. Hristov, R. Feickand M. S. Leong, “A Hybrid Fast Multipole Pseudo-Spectral Time Domain Method”, IEEE Transactions on Antennas and Propagation, Vol. 56, N° 5, May 2008, pp. 1394-1401.
  21. L. Szczecinski, R. Bettancourt, R. Feick, “Probaility density function of reliability metrics in BICM with arbitrary modulation: closed-form through algorithmic approach”. IEEE Transactions on Communications, Vol. 56, N° 5, May 2008, pp. 736-742.
  22. M. Benjillali, L. Szczecinski, S. Aissa and C. González. “Evaluation of bit error rate for packet combining with constellation rearrangement”. Wiley Journal on Wireless Communications and Mobile Computing, (in press, published on-line 2008).
  23. R. A. Valenzuela, L. Ahumada, R. Feick. “The effect unbalanced branches on the performance of diversity receivers for urban fixed wireless links”. IEEE Transactions on Wireless Communications, Vol. 6, N° 9, Sept. 2007, pp. 3324-3332.
  24. L. Szczecinski, H. Xu, X. Gao and R. Bettancourt. “Efficient evaluation of BER for arbitrary modulation and signaling in fading channels”. IEEE Transactions on Communications, Vol. 55, N° 11, pp. 2061-2064, Nov. 2007.
  25. L. Szczecinski, F.-K. Diop, and M. Benjillali. “On the performance of BICM with mapping diversity in hybrid ARQ”. Wiley Journal on Wireless Communications and Mobile Computing, in press (since July 2007).
  26. X. Hu, M. Benjillali and L. Szczecinski. “Closed-form expression for the bit error rate in rectangular QAM with arbitrary constellation mapping in transmissions over Nakagami-m fading channel”, Wiley Journal on Wireless Communications and Mobile Computing, 2007 (in press).
  27. R. A. Valenzuela, L. Ahumada, R. Feick, “The Effect of Unbalanced Branches on the Performance of Diversity Receivers for Urban Fixed Wireless Links”. IEEE Transactions on Wireless Communications, Vol. 6 N° 9, Sept. 2007, pp. 3324-3332.
  28. R. Feick, R. Valenzuela, L. Ahumada, N. Aldunate. “A statistical model for the dynamics of the received signal envelope in narrowband urban fixed wireless links with applications to MTC diversity receivers”. IEEE Antennas and Wireless Propagation Letters, Vol. 6, 2007, pp. 300-304.
  29. H. Carrasco, R. Feick, H. D. Hristov. “Experimental evaluation of indoor MIMO channel capacity for compact arrays of planar inverted-F antennas”. Microwave and Optical Technology Letters, Vol. 49, N° 7, July 2007, pp. 1754-1756.
  30. H. D. Hristov, L. P. Kamburov, R. Feick. “Compound fresnel zone lens conformal to truncated cone: antenna application”. International Journal of Infrared and Millimeter Waves”, Vol. 28, N° 6, June 2007, pp. 451-464.
  31. H. D. Hristov, L. P. Kamburov, J. R. Urumov, R. Feick, A. I. Atanassov and W. Grote. “Conical double-dielectric Fresnel-zone lens and antenna”. Microwave and Wireless Components Letters, Vol. 17, N° 5, May 2007, pp. 325-327.
  32. R. A. Valenzuela, L. Ahumada, R. Feick, S. Gysling. “Temporal fade reduction for fixed wireless diversity receivers with unbalanced and correlated branches”. IEEE Communications Letters, Vol. 11, N° 2, February 2007, pp. 129-131.
  33. H. D. Hristov, R. Feick, R. J. Urumov and G. S. Kirov. “Dual-band assembly of integrated short backfire antennas: design and numerical study”. Microwave Journal, Vol. 50, N° 1, January 2007, pp. 86-88.
  34. R. Feick, R. A. Valenzuela, L. Ahumada. “Experimental results on the level crossing rate and average fade duration for urban fixed wireless channels”. IEEE Transactions on Wireless Communications, Vol. 6, N° 1, January 2007, pp. 175-179.
  35. H. D. Hristov, L. P. Kamburov, R. Feick and J. R. Urumov.”Reply to comments on ‘focusing characteristics of curvilinear half-open fresnel zone plate lenses: plane wave illumination”. IEEE Trans. on Antennas and Propagation, Vol. 54, N° 9, pp. 2692-2693, Sep. 2006.
  36. L. Szczecinski, C. González and S. Aissa. “Exact Expression for the BER of rectangular QAM with arbitrary constellation mapping”. IEEE Transactions on Communications, Vol. 54, N° 3, pp. 389-392, 2006.
  37. L. Szczecinski, S. Aissa, C. González and M. Bacic. “Exact Evaluation of Bit- and symbol error rates for arbitrary 2-D modulation and non-uniform signaling in AWGN channel”. IEEE Transactions on Communications”, Vol. 54, N° 6, pp. 1049-1056, June 2006.
  38. L. Ahumada, R. Feick, R. Valenzuela. “Characterization of temporal fading in urban fixed wireless links”. IEEE Communications Letters, Vol. 10, N° 4, pp. 242-244, April 2006.
  39. M. Barría, L. Ahumada, P. Sánchez. “Throughput analysis of the IEEE 802.11b DCF with finite buffer for a rayleigh small scale fading channel”. Springer, Lecture Notes in Computer Science, 2006.
  40. M. Barría, P. Sánchez, L. Ahumada. “A simple and fair proposal to improve the performance of the IEEE 802.11e enhanced coordination function”. IFIP International Federation for Information Processing, Vol. 211, pp. 123-131, Aug. 2006.L.Ahumada, ³Developing countries and ICT¹s,² IEEE Potentials, vol. 24, N° 2, pp. 5, May 2005.
  41. L. Szczecinski, H. Chafnaji and C. Hermosilla. “Modulation doping for iterative demapping of Bit-Interleaved coded modulation”. IEEE Communications Letters, Vol. 9, N° 12, pp. 1031-1033, Dec. 2005.
  42. L. P. Kamburov, H. D. Hristov, J.R. Urumov, R. Feick. “Focusing characteristics of curvilinear half-open fresnel zone plate lenses: plane wave illumination”. IEEE Transactions on Antennas and Propagation, Vol. 53, N° 6, pp. 1912-1919. June 2005.
  43. L. P. Kamburov, H. D. Hristov, J.R. Urumov, R. Feick. “Curvilinear fresnel-zone plate lens antenna: vector radiation theory”. International Journal of Infrared and Millimeter Waves, Vol. 26, N° 11, pp. 1593-1611, Nov. 2005.
  44. G. S. Kirov, L. P. Kamburov and H. D. Hristov, “Feed Line Losses in microstrip antenna arrays”. Journal of Applied Electromagnetism (JAE), Vol. 7, N° 1, pp. 1-9, Dec. 2005.
  45. L. Ahumada, R. Feick, R. A. Valenzuela, C. Morales. “Measurement and characterization of the temporal behavior of fixed wireless links”. IEEE Transactions on Vehicular Technology, Vol. 54, N° 6, pp. 1913-1922, Nov 2005.
  46. L. Ahumada. “Developing countries and ICTs”. IEEE Potentials, Vol. 24, N° 2, pp. 5, 2005.
  47. L. Szczecinski. “Low-complexity search for optimal delay in linear FIR MMSE equalization”. IEEE Signal Processing Letters, Vol. 12, N° 8, pp. 545-548, Aug. 2005.
  48. C. Hermosilla, L. Szczecinski. “Performance evaluation of linear turbo-receivers using analytical extrinsic information transfer functions”. EURASIP Journal on Applied Signal Processing, special issue on turbo processing, Vol. 2005, N° 6, pp. 892-906, 2005.
  49. L. Ahumada, M. Barría, M. Maraboli. “Network devices: is more expensive better? IEEE Potentials, Vol. 24, N° 4, pp. 32-34, 2005.
  50. L. Ahumada, “Developing countries and ICT¹s”, IEEE Potentials, vol. 24, N° 2, pp. 5, May 2005.
  51. R. Feick, H. Carrasco, M. Olmos, H. D. Hristov. “PIFA input bandwidth enhancement by changing of feed plate silhouette”. Electronics Letters, Vol. 40, Issue 15, pp. 921-922, July 2004.
  52. H. Carrasco, H. D. Hristov, R. Feick, D. Cofré. “Mutual coupling between planar inverted-F antennas”. Microwave and Optical Technology Letters, Vol. 42, N° 3, pp. 224-227, August 2004.
  53. H. D. Hristov, R. Feick, W. Grote, P. Fernández. “Indoor signal focusing by means of fresnel zone plate lens attached to building wall”. IEEE Transactions on Antennas and Propagation, Vol. 52, N° 4, pp. 933-940, Apr. 2004.
  54. L. P. Kamburov, H. D. Hristov, R. Feick. “Optimum design of millimeter-wave double-dielectric fresnel zone plate lens and antenna”. International Journal of Infrared and Millimeter Waves, Vol. 25(2), pp. 301-316, Feb. 2004.
  55. H. D. Hristov, R. Feick, W. Grote. “Indoor signal focusing by use of fresnel zone plate”. Electronics Letters, Vol. 39, Issue: 1, pp. 67-68, Jan. 2003.
  56. D. Peña, R. Feick, H. D. Hristov, W. Grote. “Measurement and modeling of propagation losses in brick and concrete walls for the 900-MHz band”. IEEE Trans. on Antennas and Propagations, Vol. 51, N° 1, pp. 31-39, Jan. 2003.
  57. M. Olmos, H. D. Hristov, R. Feick. “Inverted-F antennas with broadband match performance”. Electronics Letters, U.K.; Vol. 38/16, pp. 845-847, Aug. 2002.
  58. H. D. Hristov. “Fresnel Zone in Wireless Links, Fresnel Zone Plates and Antenas”. Boston-London: Artech House, Boston-Norwood, USA, 2000, 325 pages.