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An efficient and configurable computational platform is indispensable in order to meet multiple wireless communications standards. We have developed a heterogeneous reconfigurable architecture to support the arithmetic, logic and signal processing functions which are required for transceivers used in standardized wireless local area networks. Each execution unit in this reconfigurable architecture focuses on a certain general operation, so that the combination of them can complete the various algorithms. We demonstrate the effectiveness of our approach through an implementation of the baseband of IEEE 802.11a/b/g standards and evaluate its performance.