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We consider smart “cognitive” femtocells, that can decode the base station control channel and make decision on their transmission opportunities based on the scheduling and resource allocation of the overlaying macrocell. The operation of such femtocells is somehow reminiscent of “Type II” relays, as specified in the IEEE 802.16j standard. Under certain system assumptions, we consider the tradeoff...
Knowledge of the level crossing rates (LCR) and average outage durations (AOD) of the received signal-to-interference-plus-noise ratio (SINR) is very useful in designing and analyzing the communication system performance in a cellular environment with co-channel interference (CCI). In this paper, we study the analytical LCR and the AOD of the received SINR on Rayleigh fading channels with CCI. A closed-form...
Relaying has become a very active area of wireless research due to its ability to overcome wireless channel impairments. Wireless relaying, adopted in emerging standards such as 802.16j, can increase the data throughput, improve system coverage, and lower outage probability in wireless systems by reducing path loss, mitigating shadowing, and enabling spatial reuse. In cooperative relaying, numerous...
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