Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/5509
Title: | An iterative pilot-data aided estimator for OFDM-based relay-assisted systems |
Author: | Neves, Darlene Ribeiro, Carlos Silva, Adão Gameiro, Atílio |
Keywords: | Antenna arrays arrays channel estimation estimation noise OFDM relays |
Issue Date: | 2011 |
Publisher: | IEEE |
Abstract: | We propose and assess a pilot-data aided channel estimation scheme for realistic relay-assisted scenarios designed for the downlink SFBC OFDM-based systems. We consider that both the base station and the relay node are equipped with an antenna array whereas the user terminal is a single antenna device. The relay protocol considered is equalise-and-forward. The channel estimation method iteratively uses the information carried by the pilots and data to improve the estimate of the equivalent channels for the path Base Station – Relay Node – User Terminal. The MMSE criterion is used in the design of the estimator for both the pilot-based and data-aided iterations. The results show the benefits of cooperation in terms of MSE and also show that the proposed scheme allows, with a single data iteration, a reduction of the number of pilots when compared with non-data-aided schemes. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/5509 |
ISSN: | 978-1-4673-0277-7 |
Appears in Collections: | DETI - Comunicações |
Files in This Item:
File | Description | Size | Format | |
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LATINCOM_2011.pdf | 232.69 kB | Adobe PDF | ![]() |
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