CoMP Transmission for Safeguarding Dense Heterogeneous Networks with Imperfect CSI

• XU Yunjia,
• HUANG Kaizhi,
• HU Xin,
• ZOU Yi,
• CHEN Yajun,
• JIANG Wenyu,

Vol. 13, No. 1, January 31, 2019
10.3837/tiis.2019.01.007, Download Paper (Free):

• Dense heterogeneous cellular networks
• imperfect CSI
• physical layer security
• CoMP transmission

Abstract

To ensure reliable and secure communication in heterogeneous cellular network (HCN) with imperfect channel state information (CSI), we proposed a coordinated multipoint (CoMP) transmission scheme based on dual-threshold optimization, in which only base stations (BSs) with good channel conditions are selected for transmission. First, we present a candidate BSs formation policy to increase access efficiency, which provides a candidate region of serving BSs. Then, we design a CoMP networking strategy to select serving BSs from the set of candidate BSs, which degrades the influence of channel estimation errors and guarantees qualities of communication links. Finally, we analyze the performance of the proposed scheme, and present a dual-threshold optimization model to further support the performance. Numerical results are presented to verify our theoretical analysis, which draw a conclusion that the CoMP transmission scheme can ensure reliable and secure communication in dense HCNs with imperfect CSI.

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