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BLUMENSTEIN, J. MARŠÁLEK, R. FEDRA, Z. PROKEŠ, A. MECKLENBRÄUKER, C.
Original Title
Channel estimation method for OFDM in low SNR based on two-dimensional spreading
Type
journal article in Web of Science
Language
English
Original Abstract
In this paper, we present a channel estimation method based on two-dimensional signal spreading applicable to Orthogonal Frequency Multi- ple Access (OFDM) multicarrier systems. Our method exploits a spreading of a transmitted data signal as well as a pilot signal over the assigned fre- quency range and time period. As a spreading sequence we exploited orthog- onal Walsh-Hadamard sequences. When compared with traditional pilot symbol based channel estimation, our method is beneficial in low Signal to Noise Ratio (SNR). For a comparison of our method with state-of-the-art channel estimation method, we utilized an open source LTE downlink simulator developed at TU Vienna. This enables a reproducibility of our results. Considering the LTE system, our method outperforms the traditional approach in typical range of SNR from -5 dB to 10 dB. For a comparison of a throughput performance, a number of channel models has been employed.
Keywords
Channel estimation, LTE, 2D signal spreading, OFDM
Authors
BLUMENSTEIN, J.; MARŠÁLEK, R.; FEDRA, Z.; PROKEŠ, A.; MECKLENBRÄUKER, C.
RIV year
2014
Released
5. 5. 2014
ISBN
0929-6212
Periodical
WIRELESS PERSONAL COMMUNICATIONS
Year of study
Number
78
State
Kingdom of the Netherlands
Pages from
715
Pages to
728
Pages count
14
BibTex
@article{BUT107020, author="Jiří {Blumenstein} and Roman {Maršálek} and Zbyněk {Fedra} and Aleš {Prokeš} and Christoph {Mecklenbräuker}", title="Channel estimation method for OFDM in low SNR based on two-dimensional spreading", journal="WIRELESS PERSONAL COMMUNICATIONS", year="2014", volume="2014", number="78", pages="715--728", doi="10.1007/s11277-014-1779-y", issn="0929-6212" }