ADVANCED SYNTHESIS OF DSP ALGORITHMS IN MODERN PROGRAMMABLE ARCHITECTURES

In this paper, using FIR filters as an example, the discussion on efficiency of different implementation methodologies used in DSP application targeted modern FPGA architectures is presented. Nowadays programmable technology provides possibility to implement digital system with use of specialized embedded DSP blocks. On the first place, however, this technology gives the designer the possibility to increase efficiency of designed system by exploitation of parallelisms of implemented algorithms. Moreover, it is possible to apply special techniques, such as distributed arithmetic (DA). Since in this approach general purpose multipliers are replaced by combinational LUT blocks, it allows constructing digital filters of very high performance. Additionally, application of the functional decomposition based method to LUT blocks optimisation and mapping has been investigated. The paper presents results of comparison of different design approaches.