دانلود کتاب Digital signal transmission

1. Introduction. 1.1. The Integrated Services Digital Network. 1.2. Standards. 1.3. Convergence of telecommunications and computing. 1.4. Open Systems Interconnection. 1.5. Analogue and digital signals. 1.6. How to use this book --Pt. 1. Models. 2. Signals and systems. 2.1. Introduction. 2.2. Linearity. 2.3. Frequency-domain representation of periodic signals. 2.4. Frequency-domain representation of pulses. 2.5. Characterising systems in the time-domain. 2.6. Discrete processing. 2.7. Input-output relationships in the time-domain. 2.8. Summary. 3. Random signals and noise. 3.1. Introduction. 3.2. Statistical averages (means). 3.3. Probability density functions. 3.4. Frequency-domain characterisation of random signals. 3.5. Combining random sources. 3.6. Noise and threshold detection in digital systems. 3.7. Jitter and wander. 3.8. Summary --Pt. 2. Processes. 4. Pulses for digital transmission. 4.1. Introduction. 4.2. Signalling rate and data rate. 4.3. Intersymbol interference (ISI). 4.4. Orthogonality and signal space. 4.5. Matched filter detection. 4.6. Sinusoidal pulses. 4.7. Summary. 5. Line codes. 5.1. Introduction. 5.2. Code descriptions. 5.3. Decoding and error detection. 5.4. Timing and synchronisation. 5.5. Spectral considerations. 5.6. Summary. 6. Channel codes. 6.1. Introduction. 6.2. Differential coding. 6.3. Scrambling. 6.4. Block codes: error detection and error correction. 6.5. Convolutional coding. 6.6. Summary --Pt. 3. Digital Transmission Over the Public Switched Telephone Network. 7. Analogue and digital sources. 7.1. Introduction. 7.2. Sampling. 7.3. Encoding and decoding. 7.4. Signal reconstruction. 7.5. Systems aspects of PCM. 7.6. Delta modulation and differential PCM. 7.7. Digital sources. 7.8. Summary. 8. Digital transmission hierarchies. 8.1. Introduction. 8.2. The plesiochronous digital hierarchy (PDH). 8.3. The synchronous digital hierarchy (SDH). 8.4. Summary. 9. An optical fibre link. 9.1. Introduction. 9.2. Receiver signal to noise ratio. 9.3. Pulse shaping. 9.4. The integrating effect of the high-impedance receiver. 9.5. The trans-impedance receiver. 9.6. Summary --Appendix A: Fourier series and transforms --Appendix B: Convolution --Appendix C: Modelling applications of spreadsheets