10th EAI International Conference on Mobile Multimedia Communications

Research Article

Interference alignment for D2D based on power control and MMSE

Download5 downloads
  • @INPROCEEDINGS{10.4108/eai.13-7-2017.2270804,
        author={Zhanjun Liu and Ling Kuang and Teng Hu and Yunpeng Li and Qianbin Chen},
        title={Interference alignment for D2D based on power control and MMSE},
        proceedings={10th EAI International Conference on Mobile Multimedia Communications},
        publisher={EAI},
        proceedings_a={MOBIMEDIA},
        year={2017},
        month={12},
        keywords={device-to-device (d2d) communications power control minimum mean square error (mmse) interference alignment},
        doi={10.4108/eai.13-7-2017.2270804}
    }
    
  • Zhanjun Liu
    Ling Kuang
    Teng Hu
    Yunpeng Li
    Qianbin Chen
    Year: 2017
    Interference alignment for D2D based on power control and MMSE
    MOBIMEDIA
    EAI
    DOI: 10.4108/eai.13-7-2017.2270804
Zhanjun Liu1, Ling Kuang1,*, Teng Hu1, Yunpeng Li1, Qianbin Chen1
  • 1: Chongqing University of Posts and Telecommunication
*Contact email: 472212029@qq.com

Abstract

In order to reduce the interference of device-to-device (D2D) users to cellular users, in the case of satisfying the preset communications rate, this paper proposes an effective interference alignment algorithm for D2D communications based on power control and Minimum Mean Square Error (MMSE). The proposed algorithm firstly utilizes the MMSE to derive the received precoding matrix based on the initialized transmitted precoding matrix and power allocation matrix, and then in the case of fixed communications rate, using the evaluation iteration or Lagrange duality based power control to derive new power allocation matrix. Finally the updated transmitted precoding matrix can be obtained based on the channel reciprocity. Simulation results show that, compared with the existing algorithm, the proposed algorithm not only can reduce transmitted power, but also satisfies the preset communication rate.