Contributions on exploiting transmit and receive diversity for a multi-antenna wireless system

摘要: It is well known that multiple-element antenna arrays can improve the performance and/or data rate of wireless communication systems in a fading environment. Antenna be employed at transmitter receiver side creating transmit receive diversity. The aim this PhD. thesis to study, develop and combine efficient signal processing coding techniques exploit diversity over channels. Consequently, our document divided two parts: side. In first part devoted side, we deal especially with Space-Time aspects MIMO (Multi-Input Multi-Output) system provide new architecture adapted CDMA (Coded Division Multiple Access) context. We will examine how far go when use these schemes. second -receiver side- on practical blind identification techniques, specially subspace-based part, main drawbacks subspace algorithms such as high computational complexity lack robustness order over-estimation propagation channel. Herein, give several overcome limitations technique. All are validated by simulations.