Performance Analysis of Near Perfect Reconstruction Filter Bank in Cognitive Radio Environment

The present paper puts its focus on the design of an efficient prototype Filter bank in the context of Filter Bank based Multicarrier Transmission. A benefit of the chosen technique is that,a near perfect reconstruction polyphase filter can be designed with the aid of closed form expressions with a slight adjustment in parameters of interest. The entire performance of the filters designed is analyzed and evaluated using Offset-OQAM for FBMC system. Optimization or performance tradeoff is readily obtained by appropriately adjusting those free parameters. Whatsoever results are obtainable are presented for useful analysis to the rf design engineers working in the domain of multi rate signal processing for wireless communication. An attempt on NPR Filter bank has also been made and to ensure the acceptable performance of Modified and Enhanced FBMC, computational complexity, system delay and transmission burst length need to be minimized/reduced. A single prototype filter designed may not provide the best performance in terms of all the metrics. The effect of Stop band attenuation on the edges of Magnitude and Frequency responses has been carefully studied. Different Lp, K and M factors have been considered during simulations and the results have been compared analytically.