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Understanding Ultra Wide Band Radio Fundamentals by Guerino Giancola - University of Rome La Sapienza, Maria-Gabriella Di Benedetto - University of Rome La Sapienza

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Chapter 4 The PSD of DS-UWB Signals

The PSD of a DS-UWB signal is more easily derived with respect to the TH-UWB case since pulses occur at multiples of Ts (Di Benedetto and Vojcic, 2003). In this chapter, we will focus on the derivation of the PSD of DS-UWB signals. Spectral properties of DS-UWB signals are of interest with respect to the current DS proposal submitted to the IEEE 802.15.TG3a (Roberts, 2003).

At the end of this chapter, we will include the PAM-TH case and show how it can be obtained by combining previously examined system blocks.

4.1 DS-UWB

As is well-known (see, for example, Proakis, 1995) the signal of Eq. (2-6) is not wide-sense stationary, but it can be made this way by introducing a random phase epoch Θ, which is uniformly ...

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