The public switched telephone network, or PSTN, is a circuit-switched network. This means that a telephone call reserves a 64 Kbps physical circuit between the endpoints (caller and callee, or, for ...

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This chapter includes a discussion of the most widely used forms of pulse compression, those that fall into the general class of frequency modulation. Frequency-modulated (FM) waveforms can entail ...

As our society’s hunger for data grows—not only more data, but more data delivered faster—older modulation schemes based on NRZ-type encoding grow increasingly inadequate. We need to get data from ...