Radio Architectures and Signal Processing, 5 cr

Core content

• RECEIVER ARCHITECTURES:
  - Basic architectures of communications receivers: superheterodyne, direct-conversion, low-IF;
  - Effects of non-idealities in practical analog implementations: I/Q imbalance, nonlinearities, noise, phase noise, spurious responses;
  - System calculation principles;
  - The significance of RF specifications of mobile communication systems on the specs of the signal processing blocks;
  - Flexible multistandard receiver structures and flexible spectrum use, software defined radio and cognitive radio concepts.
• TRANSMITTERS:
  - Basic transmitter structures;
  - Co-existence of transmitters and receivers, impact of duplexing methods;
  - Effects of power amplifier nonlinearities and linearization principles.
  
• FREQUENCY SYNTHESIS:
  - The principles and analysis of key performance characteristics of main frequency synthesis methods;
  - Direct digital synthesis.
• MULTIRATE DSP:
  - Principles of multirate signal processing and extensions to bandpass and complex (I/Q) cases;
  - Review of efficient realization structures: polyphase structure, CIC filters;
  - Continuous-time, discrete-time, and multirate signal processing in case of complex (I/Q) and bandpass signals;
  - Sampling of bandpass signals and I/Q signals, sampling and ADC requirements regarding resolution and sampling jitter;
  - Delta-sigma A/D-conversion principle;
  - Efficient DSP algorithms for communications receivers.
• SYNCHRONIZATION:
  - Requirements and methods for carrier and symbol synchronization;
  - Maximum Likelihood estimation theory in synchronization;
  - All-digital synchronization principles;
  - Principle of polynomial interpolation and its applications in communications signal processing.
• DSP-ENHANCED RADIO:
  - Use of statistical DSP for compensation of certain non-idealities of the analog parts (I/Q imbalance, nonlinearities, phase noise);
  - Power amplifier modeling, linarization methods, digital predistortion.

Complementary knowledge

• Efficient all-digital synchronization algorithms; Cramer-Rao bound for the performance of synchronization algorithms.
• Realizations structures and design methods for polynomial interpolation.
• More extensive analysis of the used statistical DSP methods and detailed signal models.