Abstract
We consider the design of turbo receiver structures for space-frequency block coded (SFBC-) OFDM systems in unknown frequency selective fading channels. The Turbo receiver structures for SFBC-OFDM systems under consideration consists of an iterative MAP Expectation/Maximization (EM) channel estimation algorithm, soft MMSE SFBC decoder and a soft MAP outer-channel-code decoder. MAP-EM employs iterative channel estimation and it improves receiver performance by re-estimating the channel after each decoder iteration. Moreover, the MAP-EM approach considers the channel variations as random processes and applies the Karhunen-Loeve (KL) orthogonal series expansion. The performance of the proposed approaches are studied in terms of mean square error and bit-error rate. Through experimental results, the effect of a pilot spacing on the channel estimator performance and sensitivity of turbo receiver structures on channel estimation error are studied.
| Original language | English |
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| Title of host publication | TURBO - CODING 2006 - 4th International Symposium on Turbo Codes and Related Topics and 6th International ITG-Conference on Source and Channel Coding |
| Publisher | VDE Verlag GmbH |
| ISBN (Electronic) | 3800729474, 9783800729470 |
| Publication status | Published - 2006 |
| Externally published | Yes |
| Event | 4th International Symposium on Turbo Codes and Related Topics and 6th International ITG-Conference on Source and Channel Coding, TURBOCODING 2006 - Munich, Germany Duration: 3 Apr 2006 → 7 Apr 2006 |
Publication series
| Name | TURBO - CODING 2006 - 4th International Symposium on Turbo Codes and Related Topics and 6th International ITG-Conference on Source and Channel Coding |
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Conference
| Conference | 4th International Symposium on Turbo Codes and Related Topics and 6th International ITG-Conference on Source and Channel Coding, TURBOCODING 2006 |
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| Country/Territory | Germany |
| City | Munich |
| Period | 3/04/06 → 7/04/06 |
Bibliographical note
Publisher Copyright:© 2020 TURBO - CODING 2006 - 4th International Symposium on Turbo Codes and Related Topics and 6th International ITG-Conference on Source and Channel Coding. All rights reserved.
Funding
This research has been conducted within the NEWCOM Network of Excellence in Wireless Communications funded through the EC 6th Framework Programme. This work was also supported in part by the Turkish Scientific and Technical Research Institute (TUBITAK) under Grant 104E166.
| Funders | Funder number |
|---|---|
| TUBITAK | 104E166 |
| Turkish Scientific and Technical Research Institute | |
| Sixth Framework Programme |