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In order to improve the spectrum utilization rate of Device-to-Device (D2D) communication, we study the hybrid resource allocation problem, which allows both the resource reuse and resource dedicated mode to work simultaneously. Meanwhile, multiple D2D devices are permitted to share uplink cellular resources with some designated cellular user equipment (CUE). Combined with the transmission requirement...
This paper considers the virtual cell(VC) association and multi cell scheduling in Ultra-Dense Network for sum-rate maximization where multi dimensional resources allocation strategy is coupled and interference environment is complex. For virtual cells association, a metric is proposed which is transformed from the non-convex problem via a series of decouples and captures the gain of multi user diversity...
In massive multiple-input multiple-output (MIMO) systems, linear minimum mean-square error (MMSE) detection can achieve near-optimal performance. However, it suffers from high computational complexity due to the involvement of matrix inversion. This issue becomes severer when user number (U) and receive antenna number (S) increase. Existing approaches such as Neumann series expansion method, Gauss-Seidel...
A cooperative bandwidth and power allocation algorithm is presented for multi-relay based networks. All the relays adopt the decode-and-forward protocol and assist the transmission from the source to destination in a non-cooperative game. By using a utility based mechanism, two types of resource allocation algorithms, namely bandwidth and power allocation strategy are proposed so as to maximize the...
Considering the new feature after introducing the relay nodes (RNs) into the conventional cellular networks and the existing interference coordination techniques, a novel method of interference coordination for cell-edge users in relay enhanced cells (RECs) is proposed in this paper. Firstly, all available frequency resource in each cell is divided into two parts. One part is allocated to users directly...
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