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Wavelet Radio by Homayoun Nikookar

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3 Wavelet packet modulator

Wavelets, filter banks and multi-resolution analysis, which had been developed independently in the fields of applied mathematics, signal processing and computer vision, respectively, have recently converged to form a single theory. In the previous chapter we saw how the theory of wavelets emerged as a natural extension to traditional signal processing tools like Fourier transforms. In this chapter we shall see how a multi-carrier communication system can be constructed with wavelets and wavelet packets.

Multi-carrier modulation is a method where the data to be transmitted are divided into several parallel data streams or channels, one for each sub-carrier. Multi-carrier modulation possesses several properties that make ...

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