Software radios-survey, critical evaluation and future directions

Relates the performance of enabling hardware technologies to software radio requirements, portending a decade of shift from hardware radios toward software intensive approaches. Such approaches require efficient use of computational resources through topological consistency of radio functions and host architectures. This leads to a layered topology oriented design approach encapsulated in a canonical open architecture software radio model. This model underscores challenges in simulation and computer-aided design (CAD) tools for radio engineering. It aso provides a unified mathematical framework for quantitative analysis of algorithm structures, host architectures, and system performance for radio engineering CAD environments of the 1990s.>