In UWB systems, the power of the signals are attenuated and dispersed when received due to the multi path experience, which makes it difficult to achieve synchronization. In order to make the UWB signal received efficiently and reliably, we proposed a fine symbol synchronization algorithm. Making use of the feature of UWB signal in frequency domain subspace, the algorithm takes advantage of Particle Swarm Optimization to achieve signal synchronization. In the algorithm the synchronous deviation is estimated with the help of frequency domain subspace decomposition and is optimized by Particle Swarm Optimization. The algorithm is of low complexity and can easily be applied to engineering. The simulation results show that the proposed algorithm has a better performance compared to the synchronization algorithm based on singular value decomposition. With low complexity and high performance, the proposed synchronization algorithm can make the UWB signal received efficiently and reliably.
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