Academic Journal
Experimental evaluation of interference alignment for broadband WLAN systems
| العنوان: | Experimental evaluation of interference alignment for broadband WLAN systems |
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| المؤلفون: | Lameiro, Christian, González Fernández, Óscar, García-Naya, José A., Santamaría, Ignacio, Castedo, Luis |
| بيانات النشر: | SpringerOpen & European Association for Signal Processing |
| سنة النشر: | 2015 |
| المجموعة: | RUC - Repositorio Universidade Coruña |
| مصطلحات موضوعية: | Interference alignment, WLAN systems, OFDM, Interference channel, Testbed |
| الوصف: | [Abstract]: In this paper, we present an experimental study on the performance of spatial interference alignment (IA) in indoor wireless local area network scenarios that use orthogonal frequency division multiplexing (OFDM) according to the physical-layer specifications of the IEEE 802.11a standard. Experiments have been carried out using a wireless network testbed capable of implementing a 3-user MIMO interference channel. We have implemented IA decoding schemes that can be designed according to distinct criteria (e.g., zero-forcing or MaxSINR). The measurement methodology has been validated considering practical issues like the number of OFDM training symbols used for channel estimation or feedback time. In case of asynchronous users, a time-domain IA decoding filter is also compared to its frequency-domain counterpart. We also evaluated the performance of IA from bit error ratio measurement-based results in comparison to different time-division multiple access transmission schemes. The comparison includes single- and multiple-antenna systems transmitting over the dominant mode of the MIMO channel. Our results indicate that spatial IA is suitable for practical indoor scenarios in which wireless channels often exhibit relatively large coherence times. ; This work has been supported by Xunta de Galicia, MINECO of Spain, and by FEDER funds of the E.U. under Grant 2012/287, Grant TEC2013-47141-C4-R (RACHEL project), Grant CSD2008-00010 (COMONSENS project), and FPU Grants AP2010-2189 and AP2009-1105. ; Xunta de Galicia; 2012/287 |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1687-1499 1687-1472 |
| Relation: | info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/TEC2013-47141-C4-1-R/ES/TECNICAS DE ACCESO RADIO PARA REDES INALAMBRICAS HETEROGENEAS; info:eu-repo/grantAgreement/MICINN/Plan Nacional de I+D+i 2008-2011/CSD2008-00010/ES/FOUNDATIONS AND METHODOLOGIES FOR FUTURE COMMUNICATION AND SENSOR NETWORKS/; info:eu-repo/grantAgreement/MECD/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AP2010-2189/ES/; info:eu-repo/grantAgreement/ME/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AP2009-1105/ES/; https://doi.org/10.1186/s13638-015-0409-z; Lameiro, C., González, Ó., García-Naya, J.A. et al. Experimental evaluation of interference alignment for broadband WLAN systems. J Wireless Com Network 2015, 180 (2015). https://doi.org/10.1186/s13638-015-0409-z; http://hdl.handle.net/2183/35803 |
| DOI: | 10.1186/s13638-015-0409-z |
| الاتاحة: | http://hdl.handle.net/2183/35803 https://doi.org/10.1186/s13638-015-0409-z |
| Rights: | Atribución 4.0 Internacional ; http://creativecommons.org/licenses/by/3.0/es/ ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.B78DD197 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 16871499 16871472 |
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| DOI: | 10.1186/s13638-015-0409-z |