Sumários
Multicarrier modulations
20 maio 2016, 15:30 • José Manuel Bioucas Dias
Introdution to muticarrier modulations. FDM example. Robustness to fading effects. Orthogonal frequency division multiplexing (OFDM). Brief revision of the discrete Fourier transform (DFT) and fast Fourier transform (FFT).
There was o lesson
17 maio 2016, 17:00 • José Manuel Bioucas Dias
The instructor was abroad to attend an international conference. OFDM, the topic for this lesson, was introduced in the next lesson and complemented in the next two tutorial lessons.
Problem series 6
17 maio 2016, 15:30 • José Manuel Bioucas Dias
Problems 7-11 (bounds on probability of error, passband digital systems).
Problem series 6
13 maio 2016, 17:00 • José Manuel Bioucas Dias
Problems 1-6 (representation Signals, random processes, probability of error).
Multiple access
13 maio 2016, 15:30 • José Manuel Bioucas Dias
Multiple access techniques. TDMA, FDMA, CDMA, CDMA, SDMA. Direct spread CDMA. Frequency hopping CDMA. Pseudo.noise sequences. Modulator. Demodulator Power spectral density. Multiple access interference. Probability or error.