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Title:
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Decision feedback equalization and carrier recovery in 140 Mbit QAM digital radio systems
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Author:
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Olmos Bonafé, Juan José; Agustí Comes, Ramon; Casadevall Palacio, Fernando José
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. WiComTec - Grup de recerca en Tecnologies i Comunicacions Sense Fils; Universitat Politècnica de Catalunya. GRCM - Grup de Recerca en Comunicacions Mòbils |
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Abstract:
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The tracking behavior of a decision-feedback equalizer coupled to a carrier recovery loop in the presence of dynamic multipath-fading activity is studied. Minimum-phase/non-minimum-phase-type fading transitions, with notch-depth variation-rates up to 120 dB/s, and fadings sweeping across the signal band at 300 MHz/s, are considered. Free interaction between the two adaptive devices is allowed. Simulated tap gains are compared to those theoretically obtained to justify the observed RMS error increase, which can eventually lead to the system outage. The extra degree of freedom arising in the recovered carrier phase does not seem to disturb the behavior of the coupled system. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Radiodifusió per ràdio
-Digital audio broadcasting
-Equalizers (Electronics)
-Amplitude modulation
-Digital radio systems
-Equalisers
-Fading
-Radiodifusió digital
-Equalitzadors (Electrònica) |
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Rights:
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Document type:
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Article - Published version
Conference Object |
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Published by:
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Institute of Electrical and Electronics Engineers (IEEE)
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