@inproceedings{a2dde431c7e244a68a2e2f6cb8ae3cf5,
title = "Turbo/katlamali kodlanmi{\c s} SFBC/STBC-OFDM sistemlerinde yinelemeli kanal kestirimi",
abstract = "We consider the design of turbo receiver structures for space-frequency block coded (SFBC/STBC) OFDM systems in unknown frequency selective fading channels. The Turbo receiver structures for SFBC/STBC-OFDM systems under consideration consists of an iterative MAP Expectation/Maximization (EM) channel estimation algorithm, soft MMSE SFBC/STBC 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.",
author = "Hakan Doǧan and {\c C}irpan, \{Hakan A.\} and Erdal Panayirci",
year = "2006",
doi = "10.1109/SIU.2006.1659853",
language = "T{\"u}rk{\c c}e",
isbn = "1424402395",
series = "2006 IEEE 14th Signal Processing and Communications Applications Conference",
booktitle = "2006 IEEE 14th Signal Processing and Communications Applications Conference",
note = "2006 IEEE 14th Signal Processing and Communications Applications ; Conference date: 17-04-2006 Through 19-04-2006",
}