Filter-Bank Multi-Carrier with Offset Quadrature Amplitude Modulation(FBMC/OQAM) is considered by recent research projects as one of the key for the future 5G air interface. It exhibits better spectral shape and mobility support compared to Orthogonal Frequency-Division (OFDM) thanks to the use of a time and frequency localized filter. The choice of this filter is crucial for FBMC/OQAM, due to substantial impact on achieved performance and complexity levels. In the of 5G, short frame sizes are foreseen in several communication to reduce system latency, and therefore short filters are preferred. this context, a novel short filter allowing for near perfect reconstruction having the same size as one OFDM symbol is proposed. Using Frequency-Spread(FS) implementation for the FBMC/OQAM receiver, analytical analysis and results show that the proposed filter exhibits better robustness to types of channel impairments when compared to State-of-The-Art (SoTA) filters and OFDM modulation. In addition, FS-based hardware of the filtering stage is proposed, showing lower complexity than classical PolyPhase Network (PPN)-based implementation.
No takes yet. Share an insight, caveat, or question.
Nadal et al. (2017) studied this question.