Performance Investigation of Uwb Rake Receiving and Transmitted Reference Systems

This thesis investigates the performances of the Rake receiving and the Transmitted Reference (TR) schemes for Ultra Wideband (UWB) communication systems. UWB technology has been proposed as a promising physical layer candidate for indoor wireless c:ommunications, because it offers very fine time resolution and multipath resolvability. Hovlrever, these beneficial properties also pose great challenges to the design of a low-complexity UWB receiver. In this thesis, we first develop a theoretical framework to precisely analyze the performance of the UWB Rake receiving and TR systems in realistic indoor environments. We also demonstrate how the TR scheme achieves a low-complexity receiver implementation at the expense of certain performance degradation and information rate loss. To overcome these, we propose a novel UWB-TR scheme, namely M-ary orthogonal coded/Balanc~ed TR system. Our results show that the proposed balanced TR scheme outperforms the conventional TR schemes with slightly increased transceiver complexity.