Frequency domain channel estimation and symbol detection for impulse radio ultra-wideband systems with short cyclic prefix

Frequency domain (FD) channel estimation and symbol detection for impulse radio ultra-wideband (IR-UWB) systems with short cyclic prefix (CP) is considered. For channel estimation FD recursive least squares (RLS) algorithm is used and equipped with a novel inter block interference (IBI) cancellation scheme. For signal detection, an iterative receiver structure is employed that is comprised of a FD soft input soft output (SISO) minimum mean squares error (MMSE) equalizer, a SISO repetition decoder and an IBI estimator. Simulation results show that the proposed receiver improves the channel estimation and signal detection significantly after only a few iterations.