DocumentCode :
729584
Title :
Delay-Doppler search for matching pursuit algorithms in time-variant channels
Author :
Eldarov, Nasimi ; Guoping Tan ; Herfet, Thorsten
Author_Institution :
Telecommun. Lab., Saarland Univ., Saarbrucken, Germany
fYear :
2015
fDate :
17-19 June 2015
Firstpage :
1
Lastpage :
5
Abstract :
The development of wireless communications created broad opportunities in mobile communications. However, poor channel estimation and lack of proper Doppler shift compensation techniques limit the mobility considerably. Therefore, a high quality and low-complexity channel estimation is one of the most important conditions for high mobility. In this paper we propose a low-complexity delay-Doppler search (DDS) for matching pursuit algorithms. The proposed search algorithm can be applied to MP algorithms which estimates the delay and the Doppler features of the channel in two dimensions efficiently. Two dimensional approach lowers the complexity significantly. At the end we show results for the DVB-T2 systems.
Keywords :
Doppler shift; channel estimation; iterative methods; mobile communication; time-frequency analysis; Doppler shift compensation techniques; channel estimation; delay-Doppler search; matching pursuit algorithms; mobile communications; time-variant channels; wireless communications; Channel estimation; Complexity theory; Delays; Dictionaries; Doppler shift; Matching pursuit algorithms; Noise; Compressed Sensing; Delay-Doppler Search; Matching Pursuit; Signal Processing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Broadband Multimedia Systems and Broadcasting (BMSB), 2015 IEEE International Symposium on
Conference_Location :
Ghent
Type :
conf
DOI :
10.1109/BMSB.2015.7177226
Filename :
7177226
Link To Document :
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