Please use this identifier to cite or link to this item:
http://hdl.handle.net/10071/28174
Author(s): | Dinis, R. Souto, N. Silva, J. Kumar, A. Correia, A. |
Date: | 2007 |
Title: | Joint detection and channel estimation for OFDM signals with implicit pilots |
Book title/volume: | 2007 16th IST Mobile and Wireless Communications Summit |
Event title: | 2007 16th IST Mobile and Wireless Communications Summit |
Reference: | Dinis, R., Souto, N., Silva, J., Kumar, A., & Correia, A. (2007). Joint detection and channel estimation for OFDM signals with implicit pilots. In 2007 16th IST Mobile and Wireless Communications Summit, 4299038. IEEE. https://doi.org/10.1109/ISTMWC.2007.4299038 |
ISSN: | 2167-1753 |
ISBN: | 1-4244-1662-0 |
DOI (Digital Object Identifier): | 10.1109/ISTMWC.2007.4299038 |
Keywords: | OFDM Channel estimation Implicit pilots Iterative receivers |
Abstract: | Accurate channel estimation is mandatory for the performance of OFDM modulations (orthogonal frequency division multiplexing). For this purpose, pilot symbols and/or training sequences are usually multiplexed with data symbols. To avoid the spectral degradation associated to multiplexed pilots, the use of implicit pilots (i.e., pilots superimposed to data) was recently proposed. However, the interference levels between data and pilots might be very high, leading to performance degradation. In this paper we consider OFDM schemes where the channel estimation is based on implicit pilots. To overcome the difficulties inherent to the interference levels between pilots and data, we propose an iterative receiver with joint detection and channel estimation. Our performance results show that we can achieve performances close to the ones with perfect channel estimation, even when low-power pilots or sort frames are employed. |
Peerreviewed: | yes |
Access type: | Open Access |
Appears in Collections: | IT-CRI - Comunicações a conferências internacionais |
Files in This Item:
File | Size | Format | |
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conferenceobject_44462.pdf | 216,7 kB | Adobe PDF | View/Open |
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