Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/6081
Title: Iterative channel estimation for higher order modulated STBC-OFDM systems with reduced complexity
Authors: Baştürk, İlhan
Özbek, Berna
Keywords: OFDM
Orthogonal frequency division multiplexing
Channel estimation
Space-time block codes
Expectation-maximization algorithm
Publisher: Korean Society of Internet Information
Source: Baştürk, İ., and Özbek, B. (2016). Iterative channel estimation for higher order modulated STBC-OFDM systems with reduced complexity. KSII Transactions on Internet and Information Systems, 10(6), 2446-2462. doi:10.3837/tiis.2016.06.001
Abstract: In this paper, a frequency domain Expectation-Maximization (EM)-based channel estimation algorithm for Space Time Block Coded-Orthogonal Frequency Division Multiplexing (STBC-OFDM) systems is investigated to support higher data rate applications in wireless communications. The computational complexity of the frequency domain EM-based channel estimation is increased when higher order constellations are used because of the ascending size of the search set space. Thus, a search set reduction algorithm is proposed to decrease the complexity without sacrificing the system performance. The performance results of the proposed algorithm is obtained in terms of Bit Error Rate (BER) and Mean Square Error (MSE) for 16QAM and 64QAM modulation schemes.
URI: http://doi.org/10.3837/tiis.2016.06.001
http://hdl.handle.net/11147/6081
ISSN: 1976-7277
2288-1468
Appears in Collections:Electrical - Electronic Engineering / Elektrik - Elektronik Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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