Ultra-Wideband Pulse-based Radio

Contents. Preface. List of Abbreviations and Symbols. 1. DIGITAL COMMUNICATIONS OVER ANALOG CHANNELS. 1.1 Wideband radio: spectral and spatial efficiency. 1.2 Increasing the spectral bandwidth. 1.3 Onwards to software defined radio? 1.4 Interference immunity issues of wideband radio. 1.5 Organizational overview of this text. 2. MODULATION-AWARE ERROR CODING. 2.1 Why error coding works. 2.2 How error coding works. 2.3 Coding: the concept of distance. 2.4 Coding for a narrowband, noisy channel. 2.5 Coding and modulation for a wideband channel: OFDM. 2.6 Wideband single-carrier modulation. 2.7 Conclusions on single- and multicarrier systems. 3. MODULATION-AWARE DECODING: SIGNAL RECONSTRUCTION. 3.1 Principles of signal reconstruction. 3.2 ISSR decoding for wideband QPSK. 3.3 Implementation aspects of the ISSR algorithm. 3.4 Performance of the ISSR algorithm. 3.5 ISSR under non-ideal circumstances. 4. BENEFITS OF ISI IN THE INDOOR ENVIRONMENT. 4.1 Power delay spread. 4.2 Frequency-selective versus flat fading. 4.3 Coherence time. 4.4 Multipath resolvability and link reliability. 5. PULSE-BASED WIDEBAND RADIO. 5.1 Symbol rate versus multipath resolvability. 5.2 Synchronization. 5.3 ISSR-based diversity combining. 5.4 System integration and clock planning. 5.5 Overview of the pulse-based radio system. 6. REFERENCE DESIGN OF A PULSE-BASED RECEIVE UNIT. 6.1 Receive window specifications. 6.2 Multiphase clock generator. 6.3 RF input stage. 6.4 Design for testability. 6.5 Experimental results for the prototype chip. 6.6 Summary of the pulse-based receive unit. 6.7 Overview and future work. 7. NONLINEAR LOADED OPEN-LOOP AMPLIFIERS. 7.1 Interstage coupling of open-loop transistor stages. 7.2 Design considerations on the open-loop core stage. 7.3 Improving linearity using a nonlinear load. 7.4 Distortion analysis of the nonlinear loaded stage. 7.5 Sensitivity analysis of the open-loop amplifier. 7.6 Implementation of a linearized open-loop amplifier. 7.7 Overview and future work. Appendices. A. Distortion analysis of feedback amplifiers. References. Index.