Extended Gaussian Function based Adaptive Filter Design for Filter Bank Multicarrier Systems

Filter bank multicarrier (FBMC) systems have been adopted as the most promising physical layer candidate for next generation wireless communication standards. The prototype filter in the FBMC system plays a key role in determining the system performance. An enhancement in transmission performance is possible, if a flexible pulse shape adaptive scheme is utilized in FBMC systems rather than going for a compromised choice of a fixed prototype filter. A relationship between the parameter of the filter with which the filter is adapted and the ratio of filter spread in time and frequency is also established. The dominance in performance of the proposed filter over the state-of-the-art filters is demonstrated through bit error rate (BER) and signal to interference (SIR) plots under doubly dispersive channel conditions.