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http://dx.doi.org/10.5139/JKSAS.2014.42.7.610

Analysis on the transient response of Polyphase DFT filter banks in the frequency hopping communication satellite transponder  

Lee, Daeil (Agency for Defense Development)
Joo, Jaikwan (Agency for Defense Development)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.42, no.7, 2014 , pp. 610-615 More about this Journal
Abstract
Filterbanks have been widely used in the field of multi-channel signal processing for their simple efficient implementation architectures. Especially, the polyphase DFT(Discrete Fourier Transform) filterbank is the most preferred filterbank for the uniform spaced multi-channel processing due to its simplicity. In frequency hopped communication systems, however, the use of the polyphase DFT filterbank is limited due to its undesirable transient response from hop-to-hop transitions. In this paper, the transient response of polyphase DFT filterbanks in the hop-to-hop transition was analyzed, and the efficient methods to overcome such a problem was proposed. Simulation results showed that the proposed schemes could resolve this issue efficiently.
Keywords
Polyphase DFT; Pilterbank; Frequency hopping; Transient response;
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