Prototype filter design for filter bank multicarrier modulation

Abstract

Abstract The use of the cyclic prefix in the orthogonal frequency division multiplexing (CP-OFDM) system recently it is the technique widely used method in many wireless communication systems, which depends on the use of the rectangular pulse shape for the transmission. However, the use of the rectangular pulse shape in the filter leads to appearance of many problems such as out of band emission and also the necessary need to use what is known as the cyclic prefix for the purpose of preventing interference, which leads to decrease the spectral efficiency due to the exploitation of part of the spectrum for the purpose of protection from interference. For the purpose of getting rid of these problems, the filter bank multicarrier (FBMC)system has been proposed who uses filters to construct the typical pulse that can be used in this system. The main idea in this system is how to choose the appropriate filter system for the FBMC/OQAM because this filter plays a fundamental role in the system. In this research, we will be focused on presenting a new prototype pulse shape that can be used in the fifth-generation networks(5G) of communications and also for the purpose of improving the performance of this system and overcoming the previously mentioned obstacles. During this research we will present two models to form the used pulse model, and then we compare these shapes with the most common pulse shape like (Rectangular, RC, PHYDYAS, Hermite). Through this comparison, the efficiency of these pulses can be determined by studying several different parameters that have a direct impact on performance, such as (BER, SIR, PAPR).