Reduced out-of-band radiation-based filter optimization for UFMC systems in 5G - Withdrawn

Universal-filtered multi-carrier (UFMC) technique is considered as a potential candidate for future communication systems due to its robustness against inter-carrier interference (ICI), suitability for non-contiguous fragmented available spectrum resources and low latency scenario in 5G network. In this work, we present a novel pulse shaping approach in UFMC to reduce the spectral leakage to nearby subbands used for same or other users with low complexity and high throughput. In the proposed scheme, we apply Bohman filter-based pulse shaping with combination of antipodal symbol-pairs to the edgesubcarriers of the subbands, and consequently reduce the outof-band radiation. We further optimize the filter co-efficients, which outperforms the current state-of-the art. This scheme offers better signal-to-interference ratio (SIR) to improve the robustness against carrier frequency offset (CFO) for energy saving in loosely synchronized scenario. In addition, we validate the proposed scheme by hardware prototype on a field programmable gate array (FPGA) chip.