Conference
Efficient channel estimation for OFDM systems with hierarchical constellations
| العنوان: | Efficient channel estimation for OFDM systems with hierarchical constellations |
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| المؤلفون: | Souto, N., Dinis, R., Silva, J. C. |
| المساهمون: | Miyanaga, Y. |
| بيانات النشر: | IEEE |
| سنة النشر: | 2023 |
| المجموعة: | Repositório do ISCTE-IUL (Instituto Superior de Ciências do Trabalho e da Empresa, Instituto Universitário de Lisboa) |
| مصطلحات موضوعية: | Hierarchical constellations, Multi-resolution, OFDM, Channel estimation, Iterative decoding, Implicit pilots, Domínio/Área Científica::Ciências Naturais::Ciências Físicas |
| الوصف: | In this paper we consider the use of M-QAM hierarchical constellations (Quadrature Amplitude Modulation) combined with implicit pilots for the transmission of multicast and broadcast services in OFDM (Orthogonal Frequency Division Multiplexing) systems. This method of pilot transmission allows coherent detection at the receiver while avoiding the spectral degradation associated with the usual pilot multiplexing techniques but results in mutual interference between pilots and data. Due to the demanding channel estimation requirements and the high sensitivity to interference resulting from the usage of QAM hierarchical constellations, an enhanced receiver based on the turbo concept is developed which is capable of dealing with the inherent interference between pilots and data. ; info:eu-repo/semantics/acceptedVersion |
| نوع الوثيقة: | conference object |
| وصف الملف: | application/pdf |
| اللغة: | English |
| ردمك: | 978-1-4244-0976-1 1-4244-0976-4 |
| Relation: | info:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FEEA-TEL%2F67066%2F2006/PT; IST-2005-27423; 2007 International Symposium on Communications and Information Technologies; http://hdl.handle.net/10071/28173; Souto, N., Dinis, R., & Silva, J. C. (2007). Efficient channel estimation for OFDM systems with hierarchical constellations. In Y. Miyanaga (Ed.), 2007 International Symposium on Communications and Information Technologies (pp. 998-1002). IEEE. https://doi.org/10.1109/ISCIT.2007.4392161 |
| DOI: | 10.1109/ISCIT.2007.4392161 |
| الاتاحة: | http://hdl.handle.net/10071/28173 https://doi.org/10.1109/ISCIT.2007.4392161 |
| Rights: | openAccess |
| رقم الانضمام: | edsbas.2A6CCCD |
| قاعدة البيانات: | BASE |
| ردمك: | 9781424409761 1424409764 |
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| DOI: | 10.1109/ISCIT.2007.4392161 |