Analog mitigation of out of band strong interferers in wide band acquisition for multiband HF transmissions

Zazo Bello, Santiago and Sanz Gonzalez, Jose Luis and Pérez Díaz, Baltasar and Pérez Álvarez, Iván and Lopez Perez, Javier and Melián Gutiérrez, Laura (2012). Analog mitigation of out of band strong interferers in wide band acquisition for multiband HF transmissions. In: "The 12th IET International Conference on Ionospheric Radio Systems and Techniques (IRST 2012)", 15/05/2012 - 17/05/2012, York, UK. pp. 531-535.

Description

Title: Analog mitigation of out of band strong interferers in wide band acquisition for multiband HF transmissions
Author/s:
  • Zazo Bello, Santiago
  • Sanz Gonzalez, Jose Luis
  • Pérez Díaz, Baltasar
  • Pérez Álvarez, Iván
  • Lopez Perez, Javier
  • Melián Gutiérrez, Laura
Item Type: Presentation at Congress or Conference (Article)
Event Title: The 12th IET International Conference on Ionospheric Radio Systems and Techniques (IRST 2012)
Event Dates: 15/05/2012 - 17/05/2012
Event Location: York, UK
Title of Book: Actas de 12th IET International Conference on Ionospheric Radio Systems and Techniques (IRST 2012)
Date: May 2012
Subjects:
Freetext Keywords: HF Modem, Wideband Transmission, Interference Mitigation, Zero-Crossing Statistics, Variable Notch Filter.
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Señales, Sistemas y Radiocomunicaciones
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

It is clear that in the near future much broader transmissions in the HF band will replace part of the current narrow band links. Our personal view is that a real wide band signal is infeasible in this environment because the usage is typically very intensive and may suffer interferences from all over the world. Therefore, we envision that dynamic multiband transmissions may provide better satisfactory performance. From the very beginning, we observed that real links with our broadband transceiver suffered interferences out of our multiband but within the acquisition bandwidth that degrade the expected performance. Therefore, we concluded that a mitigation structure is required that operates on severely saturated signals as the interference may be of much higher power. In this paper we address a procedure based on Higher Order Crossings (HOC) statistics that are able to extract most of the signal structure in the case where the amplitude is severely distorted and allows the estimation of the interference carrier frequency to command a variable notch filter that mitigates its effect in the analog domain.

More information

Item ID: 20119
DC Identifier: http://oa.upm.es/20119/
OAI Identifier: oai:oa.upm.es:20119
Deposited by: Memoria Investigacion
Deposited on: 29 Sep 2013 10:56
Last Modified: 21 Apr 2016 22:31
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