OFDM and FBMC-OQAM in Doubly-Selective Channels: Calculating the Bit Error Probability

On the Bit Error Probability of OFDM and FBMC-OQAM Systems in Rayleigh and Rician Multipath Fading Channels

“…For convenience, we represent the baseband system model in matrix form in the following as in [8], [9].…”

“…Different from the conventional OFDM that transmits complex-valued quadrature amplitude modulation (QAM) symbols at a given symbol rate, FBMC-OQAM transmits real-valued pulse amplitude modulated (PAM) symbols at twice this symbol rate, with the orthogonality of the waveform restricted only to the real field [1]. By virtue of this modulation type, FBMC-OQAM achieves the highest spectral efficiency as a non-CP-OFDM system while maintaining good TFL property, and provides superior performance to OFDM in some frequencydispersive channels [9] and asynchronous scenarios [10].…”

“…All of these works focused on Rayleigh flat-fading or time-invariant frequency-selective channels. [9] extended the work of [17] to the doubly-selective channels, but still, the analysis applies only to the Rayleigh channels. In [18], the BEP performances of FBMC system over Rayleigh and Nakagami-m channels were investigated in the form of asymptotic analytical expressions, based on the analysis of the signal interference noise ratio (SINR).…”

“…Therefore, in this study we aim to develop a general analytical framework for BEP evaluation that covers both Rayleigh and Rician fading, flat and doubly-selective channels, and FBMC-OQAM and OFDM systems. It should be noted that in this study we only consider single-tap equalization, which is most widely used as a trade-off between the complexity and performance [8], [9]. The channel is assumed to be estimated perfectly.…”

Design and Performance Analysis of OFDM and FBMC Modulation Techniques

“…In [7], performance of OFDM and FBMC is evaluated and output result reveals that FBMC is better than OFDM and OFDB performance can be improved by using high coding rate. In [8], the throughput of OFDM and FBMC is analysed by determining the BER under doubly selective channel. Simulation results show that FBMC outperforms OFDM.…”