Affiliation: | 1. Autonomous Networks and System Research Department, Bell Labs, Alcatel-Lucent, Dublin, Ireland 2. Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield, UK 3. Mindspeed Technologies, Sophia Antipolis, Nice, France 4. Department of Computer and Telecommunications Engineering, University of Western Macedonia, Kozani, Greece 5. CTTC, Barcelona, Spain
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