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This paper considers resource allocation and transmission optimization for femtocell networks, where the orthogonal frequency division multiple access (OFDMA) strategy is used to cope with the multi-user communication. In an attempt to mitigate cross-tier interference and optimize multi-user network performance, a two-layered beamforming scheme is proposed, facilitated by the multiple-input-multiple-output...
In this paper, we investigate the pricing and resource allocation strategies in the two-tier sensing-based cognitive fem-tocell networks, where the macrocell and femtocells are operating over the same frequency band. The macrocell base station protects itself by setting the maximum aggregate interference constraint and makes profit by pricing the interference from femtocell users. Different from the...
In this paper, spectrum-sensing based resource allocation for a cognitive radio network that contains multiple secondary users (SUs) and a primary user (PU) is investigated. Each SU firstly performs the individual spectrum sensing and forwards the result to a fusion center to make the global decision. If PU is determined absent, then SUs access the primary band with their regular transmit power. Otherwise...
A huge opportunity exists within the electricity generation industry to reduce greenhouse gas emissions, thus making a significant contribution to climate change mitigation. Under the European Union Emissions Trading Scheme (EU ETS), member countries are allocated national emission quotas which they further distribute among their individual industry sectors. Within the UK, the electricity generation...
Current trends indicate that multiprocessor-system-on-chip (MPSoC) architectures are being increasingly used in building complex embedded systems. While circuit/architectural support for MPSoC based systems are making significant strides, programming these devices and providing suitable software support (e.g., compiler and operating systems) seem to be a tougher problem. This is because either programmers...
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