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A reconfigurable superimposed 2D-mesh array for channel equalization

In this paper we present a scalable and reconfigurable mesh array of programmable processing elements. It has been designed to implement multi-standard channel estimation and equalization algorithms for digital television broadcast applications. It particularly introduces the concept of a superimposed array to speed-up the execution of an adaptive filter. This paper also discusses the array configuration and programming tools. The flexibility of this solution is demonstrated, as it simultaneously addresses the mono carrier adaptive equalizer for cable transmission, as well as multicarrier channel estimation and correction for terrestrial transmission. Gate-level synthesis results have shown that this flexibility is obtained at acceptable cost.