Đang chuẩn bị liên kết để tải về tài liệu:
Wireless Communications - Chương 6

Tham khảo tài liệu 'wireless communications - chương 6', kỹ thuật - công nghệ, kĩ thuật viễn thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Wireless Communications Principles and Practice 2/e T.S. Rapppaport Chapter 6: Modulation Techniques for Mobile Radio * Analog and Digital Modulation, Line Coding, AM/FM/SSB * Digital Fundamentals: The Sampling Theorem, Nyquist Sampling * Key Digital Modulation Techniques: BPSK, OFDM, GMSK * Spread Spectrum: DS-SS, FH-SS, Coding Gain, Fading Margins * Amplitude Modulation * Double Sideband Spectrum * Fig. 3.2 SSB Modulators * Tone-in Band SSB * Fig. 2.3 Product Detection * VCO circuit * Wideband FM generation * Fig. 2.4 Slope Detector for FM * Fig. 2.5 Digital Demod for FM * Fig. 2.6 PLL Demod for FM * Fig. 2.7 Phase-shift quadrature FM demod * Fig. 2.8 FM Demod circuit * Fig. 2.9 Line Coding spectra * Fig. 2.10 RZ and NRZ Line Codes * Fig. 2.11 Nyquist Pulses for zero-ISI * Fig. 2.12 Raised Cosine Spectrum * Fig. 2.13 Spectrum of Raised Cosine pulse * Fig. 2.13 Raised Cosine pulses * Fig. 2.14 RF signal usig Raised Cosine * Fig. 2.15 Gaussian pulse-shapes * Fig. 2.16 BPSK constellation * Fig. 2.16 Virtue of pulse shaping * Fig. 2.16 BPSK Coherent demodulator * Fig. 2.16 Differential PSK encoding * Fig. 2.16 DPSK modulation * Fig. 2.16 DPSK receiver * Fig. 2.16 QPSK constellation diagrams * Fig. 2.16 Virtues of Pulse Shaping * Fig. 2.16 QPSK modulation * Fig. 2.16 QPSK receiver * Fig. 2.16 Offset QPSK waveforms * Fig. 2.16 Pi/4 QPSK signaling * Fig. 2.16 Pi/4 QPSK phase shifts * Fig. 2.16 Pi/4 QPSK transmitter * Fig. 2.16 Differential detection of pi/4 QPSK * Fig. 2.16 IF Differential Detection * Fig. 2.16 FM Discriminator detector * Fig. 2.16 FSK Coherent Detection * Fig. 2.16 Noncoherent FSK * Fig. 2.16 Minimum Shift Keying spectra * MSK modulation * Fig. 3.2 MSK reception * GMSK spectral shaping * Fig. 2.3 GMSK spectra shaping * Fig. 2.16 Simple GMSK generation * GMSK Demodulator * Digital GMSK demodulator * Fig. 2.4 8-PSK Signal Constellation * Fig. 2.5 Bandwidth vs. Power Efficiency * Fig. 2.16 Pulse Shaped M-PSK * Fig. 2.6 16-QAM Signal Constellation * . | Wireless Communications Principles and Practice 2/e T.S. Rapppaport Chapter 6: Modulation Techniques for Mobile Radio * Analog and Digital Modulation, Line Coding, AM/FM/SSB * Digital Fundamentals: The Sampling Theorem, Nyquist Sampling * Key Digital Modulation Techniques: BPSK, OFDM, GMSK * Spread Spectrum: DS-SS, FH-SS, Coding Gain, Fading Margins * Amplitude Modulation * Double Sideband Spectrum * Fig. 3.2 SSB Modulators * Tone-in Band SSB * Fig. 2.3 Product Detection * VCO circuit * Wideband FM generation * Fig. 2.4 Slope Detector for FM * Fig. 2.5 Digital Demod for FM * Fig. 2.6 PLL Demod for FM * Fig. 2.7 Phase-shift quadrature FM demod * Fig. 2.8 FM Demod circuit * Fig. 2.9 Line Coding spectra * Fig. 2.10 RZ and NRZ Line Codes * Fig. 2.11 Nyquist Pulses for zero-ISI * Fig. 2.12 Raised Cosine Spectrum * Fig. 2.13 Spectrum of Raised Cosine pulse * Fig. 2.13 Raised Cosine pulses * Fig. 2.14 RF signal usig Raised Cosine * Fig. 2.15 Gaussian pulse-shapes * Fig. 2.16 BPSK .