Feedback orthogonal pruning pursuit for pulse acquisition in UWB communications

A feedback structure and signal recovery algorithm, orthogonal pruning pursuit, are proposed to apply sequential compressed sensing (CS) on ultra-wideband (UWB) communications. The prior knowledge is exploited by the feedback structure in time sequence UWB signals. The orthogonal pruning pursuit algorithm is utilized to reconstruct UWB echo signals by deleting zero entries to pursuit true non-zero elements. Numerical simulations show that using the proposed scheme, far fewer measurements are needed to achieve good performance compared with other CS algorithms for UWB communications. This saves substantial hardware resources in practical systems.