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Optimized Block Coded Noncoherent UWB Impulse Radio with IFI and ISI Pre-Mitigation

Existing inter-frame interference (IFI) and intersymbol interference (ISI) mitigation schemes for noncoherent UWB Impulse Radio (UWB-IR) mainly focus on signal processing after nonlinear autocorrelation receiver (AcR) or energy detector (ED). Steering the wheel, a simple but effective IFI and ISI premitigation scheme is proposed in this paper, which realizes IFI and ISI mitigation before ED. Block coded modulation is adopted and the pre-mitigation scheme relies on optimized block code design. The optimization jointly considers the signal interferencepatterns before ED and the properties of codewords. Thanks to the matching among codes, interference and detection scheme, leaked signal energy is partially used for detection. IFI and ISI mitigation is thus realized. It is showed in simulations that distinct performance improvement is achieved under moderate IFI and ISI.