Time hopped transmitted reference with multiple autocorrelation sampling for ultra wideband radio

Transmitted reference (TR) schemes for ultra wideband (UWB) eliminate the need for channel estimation, reducing receiver complexity at the cost of reduced performance. This letter proposes a transmitted reference (TR) scheme with multiple autocorrelation sampling detection. The proposed receiver captures the energy in the received signal´s autocorrelation side lobes, outperforming the traditional TR scheme for the operational range of signal to noise ratio (SNR) values. Time hoping, as well as the use of bandwidth efficient signaling with favorable spectral characteristics, facilitate significant improvement in system capacity in comparison to a similar scheme using orthogonal chirp signals in multipath spread channels.