Advances in Communication Systems

List of ContributorsPrefaceSignal Selection Theory for Space Communication Channels I. Introduction II. Description of the Channel and Channel Capacity III. Optimal Signal Selection Problem IV. Regular Simplex Coding Appendix ReferencesTheories of Pattern Recognition I. Introduction II. Minimum Distance Recognition III. Synthesis of Threshold Functions IV. The Decision Theoretic Approach V. Conclusions ReferencesThe Digilock Orthogonal Modulation System I. Definition of Orthogonal Signals II. Restrictions Placed on Practical System Waveforms III. An Example of an Orthogonal Modulation System-Discrete Pulse Position Modulation IV. A Second Example of an Orthogonal System-Discrete Frequency Modulation V. The "Digilock" Mechanization of an Orthogonal Communication System VI. Synchronization VII. The Digilock Mechanization of an Orthogonal Modulation System ReferencesTelemetry and Command Techniques for Planetary Spacecraft I. The Planetary Missions II. Fundamentals of Communication Links III. Telemetry and Command System Philosophy IV. Synchronization Theory V. Two-Channel Systems VI. Single-Channel Systems VII. Future Trends Nomenclature ReferencesCommunication from Weather Satellites I. Introduction II. The Tiros Spacecraft III. Tiros Operation and Performance IV. The Nimbus Spacecraft System V. Review and Outlook ReferencesInformation Theory of Quantum-Mechanical Channels I. Introduction II. Capacity of an Ideal Quantum-Mechanical Channel III. Quantum Noise in a Linear Passive "Noiseless" Channel IV. Noise in "Noisy" Quantum-Mechanical Channels V. Formulas Involving Density Matrices VI. Extension to Linear Amplifiers VII. Differential Equations-Interpretation as a Markov Process VIII. Canonical Signals IX. Amplifiers in Spatial Representation X. A Family of Wave Packets for a Harmonic Oscillator XI. Quantum Theory of Parametric Amplifiers XII. Photon Interpretation of Parametric Excitation XIII. Photon Correlation XIV. Formulas for the First and Second Moments XV. Moment Formula for Phase-Locking Amplifiers Appendix ReferencesAuthor IndexSubject Index