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This paper considers low-complexity multi-user scheduling algorithms for multi-carrier multiple-input multiple-output systems. With large number of active users and transmit antennas, the optimal scheduler is computationally too demanding, therefore more efficient sub-optimal schedulers are of interest. We propose genetic and greedy-based iterative algorithms with successive zero forcing for the multi-user...
In heterogeneous cellular scenarios with macrocells, femtocells or picocells users may suffer from significant co-channel cross-tier interference. To manage this interference 3GPP introduced almost blank subframe (ABSF), a subframe in which the interferer tier is not allowed to transmit data. Vulnerable users thus get a chance to be scheduled in ABSFs with reduced cross-tier interference. We analyze...
Mobile broadband data usage in Long Term Evolution (LTE) networks is growing exponentially and capacity constraint is becoming an issue. Heterogeneous network, WiFi offload, and acquisition of additional radio spectrum can be used to address this capacity constraint. Licensed spectrum, however, is limited and can be costly to obtain. This paper investigates deploying LTE on a license-exempt band as...
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