• KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

Transmit Precoder Design for Two-User Broadcast Channel with Statistical and Delayed CSIT

Vol. 12, No.5, May 31, 2018
10.3837/tiis.2018.05.012, Download Paper (Free):

Abstract

Recent studies have revealed the efficacy of incorporating delayed channel state information at transmit side (CSIT) in transmission scheme design. This paper focuses on transmit precoder design to maximize the ergodic sum-rate in a two-user Multiple-Input Single-Output (MISO) system with delayed and statistical CSIT. A new transmit strategy which precodes signals in all transmit slots is proposed in this paper, denoted as all time-slots precoding Alternative MAT (AAMAT). There is a common procedure in conventional delayed-CSIT based schemes, which is retransmitting the overheard interferences. Since the retransmitting signal is intended to both users, all previous schemes tend to use only one antenna. We however figure out an improvement in spectral efficiency could be realized if all antennas can be utilized. In this paper, we detail the design of the procoder which enabling all antennas and also we compute a lower bound of the ergodic sum-rate in an ideal condition. In addition, simulation results demonstrate the superiority of our proposed scheme.


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Cite this article

[IEEE Style]
Yanjing Sun, Shu Zhou, Qi Cao, Yanfen Wang, Wen Liu and Xiaoguang Zhang, "Transmit Precoder Design for Two-User Broadcast Channel with Statistical and Delayed CSIT," KSII Transactions on Internet and Information Systems, vol. 12, no. 5, pp. 2124-2141, 2018. DOI: 10.3837/tiis.2018.05.012

[ACM Style]
Sun, Y., Zhou, S., Cao, Q., Wang, Y., Liu, W., and Zhang, X. 2018. Transmit Precoder Design for Two-User Broadcast Channel with Statistical and Delayed CSIT. KSII Transactions on Internet and Information Systems, 12, 5, (2018), 2124-2141. DOI: 10.3837/tiis.2018.05.012