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The increasing need for functional flexibility (the number of wireless standards is large and expected to grow) and the exploding cost of system-on-chip design will make implementation of wireless standards on reconfigurable radios the only viable option in the future. Software Defined Radios (SDRs) will offer higher flexibility at lower cost. Moreover, they are key enablers in the realization of cognitive radios, which will enable more efficient use of network and spectral resources. Green SDRs will be essential, to save on crucial and scarce resources: energy and spectrum. Green Software Defined Radios gives insight in the trends asking for green SDRs. The essential ingredients of these radios are elaborated on. Specifically, design solutions and approaches for energy-scalable SDRs, both for the radio front-end and the digital baseband (including hardware and software), are explained. Intelligent (cross-layer) control is introduced as the key to achieve energy efficient operation and seamless connectivity. Last but not least the book focuses on cognitive radios, opening a new wireless order. These radios build on SDR platforms, enhanced with a sensing engine and intelligent control.

Cognitive radio networks. --- Software radio. --- Software radio --- Cognitive radio networks --- Electrical & Computer Engineering --- Engineering & Applied Sciences --- Electrical Engineering --- Telecommunications --- Ad hoc cognitive networks (Wireless communication systems) --- Cognitive networks (Wireless communication systems) --- Radio, Reconfigurable --- Radio, Smart --- Radio, Software --- Reconfigurable radio --- SDR (Software-defined radio) --- Smart radio --- Software-based radio --- Software-defined radio --- Engineering. --- Renewable energy resources. --- Computer communication systems. --- Electrical engineering. --- Electronic circuits. --- Renewable energy sources. --- Alternate energy sources. --- Green energy industries. --- Communications Engineering, Networks. --- Circuits and Systems. --- Renewable and Green Energy. --- Computer Communication Networks. --- Ad hoc networks (Computer networks) --- Self-organizing systems --- Wireless communication systems --- Telecommunication. --- Systems engineering. --- Alternate energy sources --- Alternative energy sources --- Energy sources, Renewable --- Sustainable energy sources --- Power resources --- Renewable natural resources --- Agriculture and energy --- Engineering systems --- System engineering --- Engineering --- Industrial engineering --- System analysis --- Electric communication --- Mass communication --- Telecom --- Telecommunication industry --- Communication --- Information theory --- Telecommuting --- Design and construction --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Electronic data processing --- Network computers --- Electron-tube circuits --- Electric circuits --- Electron tubes --- Electronics --- Electric engineering --- Distributed processing