wireless slides ch 06
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wirelessTRANSCRIPT
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Wireless CommunicationsPrinciples and Practice
2/eT.S. Rapppaport
Chapter 6: Modulation Techniques for Mobile Radio
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Analog and Digital Modulation, Line Coding, AM/FM/SSB
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Digital Fundamentals: The Sampling Theorem, Nyquist
Sampling
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Key Digital Modulation Techniques:
BPSK, OFDM, GMSK
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Spread Spectrum: DS-SS, FH-SS, Coding Gain,
Fading Margins
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Amplitude Modulation
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Double Sideband Spectrum
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SSB Modulators
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Tone-in Band SSB
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Product Detection
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VCO circuit
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Wideband FM generation
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Slope Detector for FM
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Digital Demod for FM
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PLL Demod for FM
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Phase-shift quadrature FM demod
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FM Demod circuit
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Line Coding spectra
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RZ and NRZ Line Codes
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Nyquist Pulses for zero-ISI
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Raised Cosine Spectrum
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Spectrum of Raised Cosine pulse
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Raised Cosine pulses
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RF signal usig Raised Cosine
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Gaussian pulse-shapes
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BPSK constellation
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Virtue of pulse shaping
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BPSK Coherent demodulator
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Differential PSK encoding
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DPSK modulation
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DPSK receiver
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QPSK constellation diagrams
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Virtues of Pulse Shaping
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QPSK modulation
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QPSK receiver
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Offset QPSK waveforms
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Pi/4 QPSK signaling
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Pi/4 QPSK phase shifts
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Pi/4 QPSK transmitter
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Differential detection of pi/4 QPSK
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IF Differential Detection
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FM Discriminator detector
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FSK Coherent Detection
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Noncoherent FSK
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Minimum Shift Keying spectra
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MSK modulation
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MSK reception
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GMSK spectral shaping
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GMSK spectra shaping
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Simple GMSK generation
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GMSK Demodulator
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Digital GMSK demodulator
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8-PSK Signal Constellation
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Bandwidth vs. Power Efficiency
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Pulse Shaped M-PSK
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16-QAM Signal Constellation
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QAM efficiencies
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M-ary FSK efficiencies
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PN Sequence Generator
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Direct Sequence Spread Spectrum
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Direct Sequence Spreading
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Frequency Hopping Spread Spectrum
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CDMA – Multiple Users
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Effects of Fading
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Irreducible Bit Error Rate due to multipath
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Irreducible Bit Error Rate due to multipath
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Simulation of Fading and Multipath
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Irreducible BER due to fading
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Irreducible BER due to fading
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BER due to fading & multipath