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As wireless communications experience tremendous growth, energy consumption is becoming a crucial problem in the wireless industry. Energy saving mechanisms are important for supporting the mobility and extending the battery life of a user equipment, reducing the operation costs of a network operator, enhancing corporate image of operators and vendors alike, and providing a lower total energy consumption which reflects in a lower environmental impact. Herein, the authors evaluate the energy efficiency of different small node deployments, namely relay nodes and Picocells, within the 3GPP LTE-Advanced framework.
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