Joint Channel and Timing Estimation for Chirp UWB

Synchronization and channel estimation are two of the most critical issues in ultra-wideband (UWB) communication systems. Conventional transmitted-reference (TR) UWB avoids the stringent synchronization and channel estimation requirements. In this work, we utilize transmitted reference technology to add reference pulses between data pulses in Chirp UWB transmitter. And in Chirp UWB receiver, a synchronization scheme based on interference mitigation mechanism to recover symbol timing is developed. Moreover the proposed algorithm performs joint timing and channel estimation through storing and averaging reference pulses. The principles of the proposed algorithm are presented and the system performance of a synchronized receiver is investigated by computer simulations. Our researches show that the proposed scheme can offer good system performance at the cost of low complexity.