We also emphasize the importance of digital voice processing and then take an intensive look at the fading multipath channel, which is the channel encountered in mobile wireless communications. The discussion includes Rayleigh fading, delay spread and frequency-selective fading. A brief review will be made of the Fourier Transform, probability, power spectral density, and white Gaussian noise. Baseband modulation, including Nyquist signaling, equalization and detection techniques are described. We will also cover topics of optimum detection, and the performance of modulation methods for white Gaussian noise and Rayleigh fading channels.
Antenna diversity is one of the diversity techniques used to improve detectability performance.
We will first discuss the use of antenna diversity to improve detectability performance on Rayleigh fading channels. These properties make these modulations especially important for mobile communications systems, such as GSM, DCS, Bluetooth, DECT, CDPD, and Mobitex. We will fully discuss the GMSK, GTFM, TFM, and other examples of these types of modulations. We will present a short summary of the main results of Information theory. We will include a full discussion of OFDM and its implementation, DMT, at this point.