Reconfigurable Linear Phase Less Complex Sharp Transition Band Filter Using FRM Method
A.A. Hanimol, B Prameela · 2018 International Conference on Emerging Trends and Innovations In Engineering And Technological Research (ICETIETR) · 2018
Since there are different telecommunication standards, communication engineers main focus turns to design flexible radio system to handle different service. As the ways and means by which people need to communicate data, voice, video communication, broadband messaging, command and control communication, and emergency response communication are increases exponentially. MWCR support multiple channels of different communication standard. The most important unit in transceiver is digital front end. Mainly digital front end of MWCR Perform operation like channelization, sample rate conversion, digital down conversion, pulse shaping. Reconfigurable digital filters or filter bank are used to extrication of different bandwidth frequencies from a wide band input signal in receiver. Reconfigurable filter make the system flexible before invention of reconfigurable filters, separate filters are used to extract signal of different standards. The MWCR use reconfigurable digital filters to perform multi standard channelization. The realization of linear phase dynamically reconfigurable filter with sharp cutoff and low complexity is really a challenging task. Literature survey gives a brief description of different types of reconfigurable digital filter (RDF) design, after literature survey FRM technique is chosen as best method to give sharp transition band filter. Reconfigurability of FRM technique is obtained by altering interpolation factor (M) in same channel and with use of additional pair of masking filter in different channels. Comparison of prototype filter with Frequency response masking (FRM) based filter is performed using Matlab R2014b and it is implemented in Modelsim 10.4b and in XilinxISE design suite.