Pruned DFT based FBMC employing PPN with Low Latency Low PAPR

Abstract

Future wireless systems must accommodate a diverse range of practical applications within a particular frequency spectrum.This is a hurdle for earlier CP-OFDM owing to insufficient out-of-band emissions. Because of its considerable spectrum features, FBMC is an efficient alternative to OFDM for future wireless system use cases that do not need a large number of subcarriers. Although FBMC offers several benefits, it requires special supervision owing to the inherent fictional interference.In most real-world scenarios, one-tap equalizers are enough for FBMC, provided the subcarrier frequency aligns with the channel. By dispersing symbols that represent data throughout time or frequency, accurate orthogonality can potentially be restored in FBMC-OQAM, facilitating the immediate implementation of all OFDM techniques. This work's important addition is that the PrunedDFT spread FBMC outperforms SCFDMA in almost every dimension. It demonstrates greater resilience in doubly-selective channels, eliminates cyclic prefixes, and significantly reduces out-of-band emissions. Utilizing trimmed DFT spread FBMC has become preferable for throughput over regular FBMC-OQAM whenever the channel remains nearly uniform over the entire transmission bandwidth.