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Spectrally-efficient and low-latency support of local media services is expected to be provided by enabling underlay direct Device-To-Device (D2D) communication mode in future cellular networks. Interference Alignment (IA) can enhance the capacity of a wireless network by providing more degrees of freedom. In this paper, the authors propose using IA techniques in a D2D underlay network to enhance spectral efficiency. They compare IA transmission and traditional Point-To-Point (P2P) transmission from the Bit-Error-Rate (BER) and sum-rate points of view.
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