ELT-44007 Radio Architectures and Signal Processing Fall 2016

Updated 8.1. 2017

Preliminary Schedule

The learning materials are available through the links of this page. In the beginning, they are from earlier implementations of the course, and they will be updated as the course progresses. In some sections, the changes may be quite extensive.

Please notice that some of the materials are avaible only within TUT domain, or using VPN.

Lectures by Markku Renfors, unless otherwise noted.

0. Introduction 7.9.2016

  • Arrangements, requirements

  • Motivation, some background & scope; Software Radio and Cognitive Radio concepts

1. Receiver Architectures 7.9., 14.9.2016

- see related exercises

  • Main elements in communications receivers

  • Real and complex (I/Q) mixing

  • Superheterodyne, direct conversion, and low IF architectures

  • Critical issues in receiver front-end design

  • Effects of I/Q imbalance

  • Noise figure

  • Nonlinearities, intermodulation

  • Dynamic range; principles of system calculations

  • Oscillator phase noise

2. Review of Multirate Digital Signal Processing 21.9.2016

- see related exercises

  • Sampling rate conversion: decimation, interpolation

  • Efficient FIR filter structures for decimation and interpolation

  • Multistage designs

  • CIC-filter

  • Polyphase structures

  • Efficient IIR filter structures for decimation and interpolation

3. Multirate Techniques for Complex and Bandpass Signals 28.9.2016

- see related exercises

  • Complex (I/Q) signals and systems

  • Real and I/Q-mixing

  • Sampling and multirate techniques for real and complex bandpass signals

  • Quantization noise and sampling jitter in AD-conversion

  • Sigma-delta A/D conversion principle

  • Complex filter banks

4. Advanced Receiver Architectures 5.10.2016

  • Baseband, IF, and RF sampling principles

  • Alternative receiver architectures based on wideband/bandpass sampling

  • Problems of wideband sampling in communication systems

  • Choice of sampling rate and IF frequency

  • GSM case study: requirements for sampling, A/D-conversion, and digital filtering for GSM in a wideband sampling case

  • DSP aspects in flexible receivers

  • Channel selection filtering and downconversion approaches

5. Introduction to Transmitter Architectures and Signal Processing 5.10., 12.10.2016

  • Transmitter and receiver co-existence; effect of duplexing methods

  • Basic transmitter architectures

  • Power amplifier considerations: Peak-to-average power ratio issues, overview of PA linearization methods

  • Multicarrier Systems and PAPR Problem

6. Frequency synthesis techniques 26.10.2016 (campus network or VPN)

  • PLL-based synthesis

  • Fractional N principle

  • Digitally controlled oscillators

  • Numerically controlled oscillators

7. Synchronization in Receivers 26.10.2016, 2.11.2016

- see related exercises

  • Requirements for carrier recovery and symbol timing recovery

  • Different synchronizer types

  • Performance criteria

  • Basics of Maximum Likelihood estimation theory

  • All-digital ML-based symbol timing and carrier recovery methods

  • Cramer-Rao bound

8. Polynomial-Based Interpolation Filters for DSP Applications 2.11.2016

- Matlab interpolation demo, Matlab Newtondemo, paper about Newton structure

  • Polynomial-based interpolation, Farrow-structure

  • Fractional delay filters

  • Lagrance interpolation, frequency domain optimized designs

  • Applications

  • Matlab demo

9. Cognitive Radio and its RF Challenges 9.11.2016

  • Spectrum Agile Waveforms

  • Dynamic spectrum access and cognitive radio ideas

  • Elements of cognitive radio systems

  • Filter bank approach for cognitive radio physical layer

  • Spectrum sensing

  • RF challenges

10. Transmitter Architectures and Power Amplifier Issues 16.11.2016, 23.11.2016 (campus network or VPN)

11. I/Q Imbalances in Direct-Conversion Radio Transmitters 23.11.2016, 30.11.2016 (campus network or VPN)

I/Q Imbalance in Recevers 30.11.2016 (campus network or VPN)

12. Oscillator Phase Noise 30.11.2016 (campus network or VPN)

Wrap-up, exam requirements