In this paper, we investigate the secure rate-splitting for the two-user multiple-input multiple-output (MIMO) broadcast channel with imperfect channel state information at the transmitter (CSIT) and a multiple-antenna jammer, where each receiver has equal number of antennas and the jammer has perfect channel state information (CSI). Specifically, we design the secure rate-splitting multiple-access in this scenario, where the security of splitted private and common messages is ensured by precoder design with joint nulling and aligning the leakage information, regarding to different antenna configurations. As a result, we show that the sum-secure degrees-of-freedom (SDoF) achieved by secure rate-splitting outperforms that by conventional zero-forcing. Therefore, we validate the superiority of rate-splitting for the secure purpose in the two-user MIMO broadcast channel with imperfect CSIT and a jammer.
翻译:在本文中,我们调查了双用户多投入多产出(MIMO)广播频道的安全分率,该频道在发射机(CSI)和多屏蔽干扰器的频道状态信息不完善,每个接收器拥有同等数量的天线,干扰器拥有完美的频道状态信息(CSI ) 。 具体地说,我们设计了这一情景中的安全分率多重接入,在这种情景中,分解的私人和共同信息的安全性通过预译器设计得到保证,同时将渗漏信息与不同的天线配置联合取消和统一。 因此,我们展示了安全分解率分解法所实现的自由总度,而常规零分解法则是通过常规零分解法实现的。 因此,我们验证了两用户IMO广播频道的分率优势,即分解率优于不完善的CSIT和干扰器的安全目的。