Spread Spectrum CDMA: IS-95 and IS-2000 for RF Communications

Appendix K: Review Questions for the Appendices

1.

Explain the production of Inter-mod products and spurious emissions.

2.

Why are the inter-mod product integer multiples of the fundamentals?

3.

Why does an inter-mod product often sound clipped and distorted?

4.

What is the primary requirement for a basis function set in Fourier mechanics?

5.

What is the result of integrating an asymmetrical function over a symmetrical interval [e.g., Sin(x) from - p to + p]?

6.

What does the spectrum of single square bit (in time) look like?

7.

What is the source of the higher frequency components in the spectra of either a single square bit or a square wave pulse train?

8.

How does Fourier mechanics apply to Cross and Auto Correlation?

9.

What is the relationship between the Auto Correlation function and Spectral Energy Density?

10.

Use Fourier concepts to explain why modulating and demodulating a signal produces multiple spectral components.

11.

Use Fourier concepts to explain dispersion.

12.

What is group velocity?

13.

What does Fourier mechanics tell us about a traveling packet of waves composed of multiple frequency components?

14.

When does the product of uncertainties D(Vg) x Dl equal 2 p?

15.

Explain each of Maxwell's equations.

16.

Use Maxwell's equations to explain an AC transformer, Faraday shielding, skin depth, inductance, capacitance, and dispersion.

17.

Explain the implications of the fact that Maxwell's equations are linear.

18.

Use concepts from Fourier analysis and Maxwell's equations to explain why a quick spark of current produces a wide...

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