LEARNING OUTCOMES

Mathematical models for radio transmission: (20) Radio Channel models; Free space model; Probabilistic rain model; Multipath time-variant general statistical model (Time variant pulse response, First order channel models (Fading (Rayleigh, Rice, Nagakami)); Second order models. Radio transmission system models: Frequency selectivity and temporal fading; Slow and fast fading; Diversity transmission (frequency, time, space); Wideband transmissions as frequency selective channels; Channel models and rake receivers. Wideband Digital radio transmission: systems and techniques (20): Multiple Access techniques overview; Wideband modulations: Spread Spectrum: General concepts, Direct Sequence Spread Spectrum and CDMA, Orthogonal Frequency Division Modulation (OFDM) Software and Cognitive Radio (10) : Software radio architectures;. from software to cognitive radio

AIMS AND LEARNING OUTCOMES

 To acquire knowledge on methods and techniques related to: 

 Mathematical models for radio transmission:

Basic Radio Channel models; Free space model; Probabilistic rain model;

Multipath time-variant general statistical model  (Time variant pulse response, First order channel models (Fading (Rayleigh, Rice, Nagakami)); Second order models. Radio transmission system models: Frequency selectivity and temporal fading; Slow and fast fading; Diversity transmission (frequency, time, space); Wideband transmissions as frequency selective channels; Channel models and rake receivers.

Wideband Digital radio transmission: systems and techniques 

Multiple Access techniques overview; Wideband modulations: Spread Spectrum: General concepts,

Direct Sequence Spread Spectrum and CDMA,

Orthogonal Frequency Division Modulation (OFDM) Software and Cognitive Radio 

Software radio architectures;. from software to cognitive radio 

To acquire capabilities of programming by means of labs using matlab and wireless sw development tools

TEACHING METHODS

Oral lessons  will be used to provide basic contents. Capabilities development will be xploited through a set of laboratory exercises during the course, where some of the concepts introduced during the lessons will be presented and developed with students in simulated Matlab and GNU environment. .  

SYLLABUS/CONTENT

Knowledge and understanding:

• Mathematical  models  for radio transmission: (20)
  • Radio Channel models
    • Free space model;
    • Probabilistic rain model;
    • Multipath time-variant  general statistical model
      • Time variant pulse response
      • First order channel characterization
        • Fading models (Rayleigh, Rice, Nagakami)
      • Second order characterization
        • Multipath intensity profile and Bandwidth Coherence function
        • Doppler Power spectrum and time coherence
        • Delay spread and Doppler Spread
        • Temporal coherence and frequency coherence bandwidth
      • Radio transmission system models
        • Frequency selectivity and temporal fading
        • Slow fading and fast fading
        • Narrowband transmission as non selective frequency channels
        • Diversity transmission (frequency, time, space)
        • Wideband transmission as frequency selective channels
        • Channel models and rake receivers for spread spectrum systems
• Wideband Digital transmission:  systems and techniques (20)
  • Multiple Access techniques overview (2)
    • TDMA, FDMA principles, advantages/disadvantages
    • Code Division Multiple Access introduction and comparison
  • Wideband modulations (20)
    • Spread Spectrum: General concepts (2)
    • Direct Sequence Spread Spectrum (8)
      • Transmission and receiver general scheme
      • Pseudo noise codes:
      • DS-SS Systems and CDMA
      • CDMA received signal properties
        • Multiuser interference and error probability
        • CDMA receivers
          • Optimal receiver
          • Viterbi receiver
          • Sub-optimal receivers
    • Orthogonal Frequency Division Modulation (OFDM) (6)
      • Multicarrier modulations principles
      • Transmission and receiver schemes
        • Analog schemes
        • Digital FFT based schemes
        • Modulation time
      • Modulated signal characteristics
      • Receiver characterisctics
    • OFDM-CDMA LTE waveforms (4)
      • Multicarrier CDMA.
      • Other schemes: MT CDMA
• Software and Cognitive Radio (5)
  • Software Radio definition and history
  • Software radio architectures
  • From software to cognitive radio
    • Spectrum sensing
    • Aware adaptive and cognitive radio

RECOMMENDED READING/BIBLIOGRAPHY

G. L. Stuber, Principles of Mobile Communication, Kluwer Academic Publishers, New York, 1996

T. Rappaport, “Wireless Communications: Principles and Practice, 2nd Edition”, Prentice Hall, USA, 2001

J.G.Proakis, “Communication Systems Engineering, 2nd Edition”, Prentice Hall, New Jersey, 2001

Cognitive Radio, Software Defined Radio, and Adaptive Wireless Systems, Ed.,Hüseyin Arslan, Springer, Netherlands, 2007