Embedded Everywhere: A Research Agenda for Networked Systems of Embedded Computers
Embedded Everywhere: A Research Agenda for Networked Systems of Embedded Computers
Design space exploration of real-time multi-media MPSoCs with heterogeneous scheduling policies
CODES+ISSS '06 Proceedings of the 4th international conference on Hardware/software codesign and system synthesis
ACM Transactions on Embedded Computing Systems (TECS)
Reconfigurable Computing: The Theory and Practice of FPGA-Based Computation
Reconfigurable Computing: The Theory and Practice of FPGA-Based Computation
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Digital Down Conversion (DDC) is an algorithm, used to lower the amount of samples per second by selecting a limited frequency band out of a stream of samples. A possible DDC algorithm consists of two simple Cascading Integrating Comb (CIC) filters and a Finite Input Response (FIR) filter preceded by a modulator that is controlled with a Numeric Controlled Oscillator (NCO). Implementations of the algorithm have been made for five architectures, two Application Specific Integrated Circuits (ASIC), a General Purpose Processor (GPP), a Field Programmable Gate Array (FPGA), and the Montium Tile Processor (TP). All architectures are functionally capable of performing the algorithm. The differences between the architectures are their performance, flexibility and energy consumption. In this paper we compared the energy consumption of the architectures when performing the DDC algorithm. The ASIC is the best solution if digital down conversion is constantly required. When digital down conversion is needed only parts of the time, the Altera Cyclone II is the best solution due to its smaller technology size. In the spare time the reconfigurable architectures can be reconfigured for other tasks of today's multimedia devices.