Single-carrier frequency domain equalisation with hierarchical constellations: an efficient transmission technique for broadcast and multicast systems

J. Silva; R. Dinis; N. Souto; P. Montezuma

Single-carrier frequency domain equalisation with hierarchical constellations: an efficient transmission technique for broadcast and multicast systems

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Single-carrier frequency domain equalisation with hierarchical constellations: an efficient transmission technique for broadcast and multicast systems

Author(s): J. Silva ; R. Dinis ; N. Souto ; P. Montezuma
DOI: 10.1049/iet-com.2011.0674

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Author(s): J. Silva ^{1, 2} ; R. Dinis ^{1, 3, 4} ; N. Souto ^{1, 2} ; P. Montezuma ^{3, 4}
- Affiliations: 1: IT, Instituto de Telecomunicações, Lisboa, Portugal
  2: IT, ISCTE, Instituto Superior das Ciências do Trabalho e da Empresa, Lisboa, Portugal
  3: DEE, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, Caparica, Portugal
  4: DEE, Faculdade de Ciências e Tecnologia, FCT, Uninova, Instituto de D'esenvolvilmento de Novas Tecnologias, Caparica, Portugal
Source: Volume 6, Issue 13, 5 September 2012, p. 2065 – 2073
DOI: 10.1049/iet-com.2011.0674 , Print ISSN 1751-8628, Online ISSN 1751-8636

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Orthogonal frequency division multiplexing (OFDM) schemes are the choice modulation for broadband wireless broadcast and multicast systems. However, OFDM schemes have important limitations such as high-envelope fluctuation of the transmitted signals and its sensibility to carrier frequency errors. When these limitations prove critical the authors consider single-carrier frequency-domain equalisation (SC-FDE) schemes, that allow much higher power efficiency because of lower envelope fluctuations. The overall performance can be further improved if the conventional linear FDE is replaced by an iterative FDE such as an iterative block decision feedback equaliser (IB-DFE). Conventional IB-DFE are usually designed for a quadrature phase shift keying constellation. However, it is strongly recommended that broadcast and multicast systems employ hierarchical constellations with several classes of bits with different error protection. In this study the authors consider the use of SC-FDE schemes combined with IB-DFE receivers in broadband wireless broadcast and multicast systems. The authors emphasise the advantages of these schemes and the authors present IB-DFE designs suitable for hierarchical constellations with several classes of bits with different error protection.

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Single-carrier frequency domain equalisation with hierarchical constellations: an efficient transmission technique for broadcast and multicast systems

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