Mobile Communications Handbook, 3rd Edition

5

Modulation Methods

 

     Gordon L. Stüber

5.1 Introduction

5.2 Basic Description of Modulated Signals

5.3 Quadrature Amplitude Modulation

QAM Signal Constellations

Root Raised Cosine Pulse Shaping

Power Spectrum of QAM

5.4 Phase Shift Keying and π/4-QDPSK

5.5 Continuous Phase Modulation, Minimum Shift Keying, and GMSK

Minimum Shift Keying

Gaussian Minimum Shift Keying

5.6 Orthogonal Frequency Division Multiplexing

FFT Implementation of OFDM

Power Spectrum of OFDM

5.7 Summary and Conclusions

References

Further Reading

5.1 Introduction

 

Modulation is the process whereby message information is embedded into a radio frequency carrier. Message information can be transmitted in the amplitude, frequency, or phase of the carrier, or a combination ...