TRANSMITTED REFERENCE SYSTEM AND

The transmitted reference (TR) receivers have been known of for many decades, but there is a renewed interest for application of TR receivers as a suboptimal solu-tion for ultra-wideband (UWB) communications because of the difficulty being faced in estimating the channel accurately for an optimal solution. In this research, the performance of UWB-TR receivers in an indoor UWB channel was evaluated. In this work, performance of UWB-TR receivers was first evaluated in non-intersymbol interference (ISI) case. Few techniques, e.g., differential TR and reference enhanced differential TR, were tried to improve the performance in this case. Impact of variation in integration length on the performance of the system was also studied in case of no ISI. At higher data rates, performance of TR receivers are not promising because of the presence of ISI. Performance of TR receivers when used along with a temporal focusing technique known as time reversal (TiR) in the presence of ISI was also evaluated. Performance of a digital approach to TiR was also studied via simulations. The performance of reference enhanced TR receiver’s showed significant im