Conference paper Open Access

Energy-efficient implementation of a wideband transceiver system with per-band equalisation and synchronisation

Vianney Anis; Connor Delaosa; Stephan Weiss; Louise H. Crockett


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{
  "DOI": "10.1109/WCNC.2018.8377441", 
  "author": [
    {
      "family": "Vianney Anis"
    }, 
    {
      "family": "Connor Delaosa"
    }, 
    {
      "family": "Stephan Weiss"
    }, 
    {
      "family": "Louise H. Crockett"
    }
  ], 
  "issued": {
    "date-parts": [
      [
        2018, 
        4, 
        16
      ]
    ]
  }, 
  "abstract": "<p>For emission in the TV white space spectrum, the regulators are imposing strict spectral masks, which can be fulfilled using a DFT-modulated filter-bank multi-carrier system to extract one or several TVWS channels in the 470&ndash;790MHz range. Such a system reduces the channel dispersion, but even with near-perfectly reconstructing filter banks, an equaliser is required to at least perform some form of timing synchronisation. In this work, we propose a per-band equalisation and synchronisation approach, performed by a constant modulus (CM) algorithm running concurrently with a decision-directed adaptation process for faster convergence and reduced phase ambiguity. We compare symbol- and fractionally-spaced versions, and investigate their fixed-point implementation on a field programmable gate array. We elaborate on advantages that this fractionally spaced concurrent system offers over a symbol-spaced equaliser and compare it to equalisers that are updated purely by a CM algorithm.</p>", 
  "title": "Energy-efficient implementation of a wideband transceiver system with per-band equalisation and synchronisation", 
  "type": "paper-conference", 
  "id": "1481821"
}
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