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Frequency Domain Processing Techniques for Pulse Shape Modulated Ultra Wideband Systems  

Gordillo, Alex Cartagena (Division of Electrical and Computer Engineering, Yokohama National University)
Kohno, Ryuji (Division of Electrical and Computer Engineering, Yokohama National University)
Publication Information
Journal of Communications and Networks / v.9, no.4, 2007 , pp. 482-489 More about this Journal
Abstract
In this paper, two frequency domain signal processing techniques for pulse shape modulation(PSM) ultra wideband(UWB) systems are presented. Firstly, orthogonal detection of UWB PSM Hermite pulses in frequency domain is addressed. It is important because time domain detection by correlation-based receivers is severely degraded by many sources of distortion. Pulse-shape, the information conveying signal characteristic, is deformed by AWGN and shape-destructive addition of multiple paths from the propagation channel. Additionally, because of the short nature of UWB pulses, timing mismatches and synchronism degrade the performance of PSM UWB communication systems. In this paper, frequency domain orthogonality of the Hermite pulses is exploited to propose an alternative detection method, which makes possible efficient detection of PSM in dense multipath channel environments. Secondly, a ranging method employing the Cepstrum algorithm is proposed. This method is partly processed in the frequency domain and can be implemented without additional hardware complexity in the terminal.
Keywords
Frequency domain detection; Hermite pulses; multipath fading channel; pulse shape modulation(PSM); ranging; ultra wideband(UWB);
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 0  (Related Records In Web of Science)
Times Cited By SCOPUS : 1
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