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This paper investigates flexible spectrum usages for LTE network that consists of overlaying macrocell and femtocell. In such a networking environment, shared spectrum usage and partitioned spectrum usage are two options to be employed between two radio tiers. After recognizing the pros and cons of these two usages, we propose hybrid spectrum usage to take advantage of their merits. In our proposal,...
This paper investigates flexible spectrum sharing for coexistence of macrocell and femtocell. In such a networking environment, shared spectrum usage and partitioned spectrum usage are two options to be employed between them. After recognizing the pros and cons of these two usages, we propose hybrid spectrum sharing to take advantage of their merits. In our proposal, the femtocells embedded in macrocell...
This paper focuses on bidirectional relaying schemes for multihop communications. For a two hop communication system, traditional 4-step bidirectional relaying (TBR) method allocates 4 slots, resulting in low efficiency; Coded bidirectional relaying (CBR) method, making use of network coding, needs only 3 slots, can provide throughput improvement up to 33% compared with TBR method; Two-way relaying...
The major challenge in future heterogeneous wireless networks is to promote the network welfare by well designing the radio resource management (RRM). Due to the similarity of both the ecological system and the heterogeneous wireless networks on the competitiveness, we propose a novel ecology-based adaptive network control (EBANC) scheme for RRM to optimize the network revenue, which introduces the...
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