Again, channel capacity without any diversity technique and SISO channel capacity are presented for comparison.
Finally, Monte Carlo simulations were used to evaluate the performance of the modulation diversity technique and to compare communication systems with and without this technique.
Regarding the electric field diversity techniques, wavelength and polarization diversity techniques usually suffer from the small achievable number of different speckle patterns, which is limited by practical reasons.
In order to further increase the network spectral efficiency, MIMO spatial multiplexing (SM) techniques and diversity techniques have been adopted [4, 5, 15].
Nowadays, diversity techniques are more and more considered as one of the best answer for this interference problem, especially in 4G networks.
One way to achieve this mix of message combining in cooperative networks would be to employ in a joint manner distributed FEC and distributed diversity techniques, thus providing both coding and diversity gains.
To date, many diversity techniques have been developed and employed in time, frequency, and space domains.
His research interests concern physical layer aspects of future wireless communication systems, especially multiple-antenna techniques, ultra-wideband and cognitive radio systems, relaying, and cooperative diversity techniques, as well as theoretical aspects of jamming and radar systems.
At the PHY layer, the reliability could be increased by using tailored channel coding and diversity techniques to overcome the impairments of the wireless channel, but first and foremost a timely channel access must be granted.
