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Principles of Communication Systems Simulation with Wireless Applications by Kurt L. Kosbar, William H. Tranter, Theodore S. Rappaport, K. Sam Shanmugan

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Chapter 4. Lowpass Simulation Models for Bandpass Signals and Systems

As we saw in the previous chapter, a large number of samples are required to generate an RF (radio frequency) bandpass (BP) signal, and for that reason RF bandpass signals are not typically used in waveform-level simulations. RF signals are bandpass signals in which the carrier frequency fc usually exceeds the bandwidth B by several orders of magnitude. Using lowpass (LP) representations for bandpass signals typically results in simulations that execute much faster and have greatly reduced data storage and signal-processing requirements. The use of lowpass models for both signals and systems for use in simulation is the focus of this chapter.

The Lowpass Complex Envelope for ...

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