Achievable Degrees of Freedom of the K-user MISO Broadcast Channel with\n Alternating CSIT via Interference Creation-Resurrection

2016/05/10 by Mohamed Seif, Seif, Mohamed, Amr El‐Keyi +3
Computer Science · Engineering · #Advanced MIMO Systems Optimization #Advanced Wireless Network Optimization #Cooperative Communication and Network Coding #FOS: Computer and information sciences #Information Theory (cs.IT)

paper · pdf · doi:10.48550/arxiv.1605.02928

openalex publication_date 2016/05/10 · openalex created_date 2022/09/29 · openalex updated_date 2026/07/28

Abstract

Channel state information at the transmitter affects the degrees of freedom\nof the wireless networks. In this paper, we analyze the DoF for the K-user\nmultiple-input single-output (MISO) broadcast channel (BC) with synergistic\nalternating channel state information at the transmitter (CSIT). Specifically,\nthe CSIT of each user alternates between three states, namely, perfect CSIT\n(P), delayed CSIT (D) and no CSIT (N) among different time slots. For the\nK-user MISO BC, we show that the total achievable degrees of freedom (DoF) are\ngiven by fracK²2K-1 through utilizing the synergistic benefits of\nCSIT patterns. We compare the achievable DoF with results reported previously\nin the literature in the case of delayed CSIT and hybrid CSIT models.\n

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