论文标题
速率分类多个访问多端纳特纳联合通信和雷达传输
Rate-Splitting Multiple Access for Multi-Antenna Joint Communication and Radar Transmissions
论文作者
论文摘要
依靠多用户多用户多用户多Antenna系统的有力策略，依赖于多Antenna速率分解（RS）技术的速率分类多重访问（RSMA）已成为一种强大的策略。在本文中，将RSMA作为统一的多重访问多重访问，用于多重访问多重访问（RADCOM）系统，在该系统中，基站具有双重通信和雷达能力，可与下行链路用户同时通信，并与探测信号与感兴趣的方位角进行探测信号。使用RS，将消息分为常见和私有部件，然后在预编码和传输之前编码为通用和私人流。我们设计了该RADCOM系统的消息拆分和预编码器，以使加权和速率（WSR）最大化，并且在每个天线处的平均发射功率约束下，将发射光频率近似于所需的雷达梁板。然后，我们提出了一个基于乘数交替方向方法（ADMM）的框架，以解决复杂的非凸优化问题。结果突出了RSMA统一RADCOM传输的好处，并管理雷达和通信之间的干扰，而不是传统的太空划分多重访问（SDMA）技术。
Rate-Splitting Multiple Access (RSMA), relying on multi-antenna Rate-Splitting (RS) techniques, has emerged as a powerful strategy for multi-user multi-antenna systems. In this paper, RSMA is introduced as a unified multiple access for multi-antenna radar-communication (RadCom) system, where the base station has a dual communication and radar capability to simultaneously communicate with downlink users and probe detection signals to azimuth angles of interests. Using RS, messages are split into common and private parts, then encoded into common and private streams before being precoded and transmitted. We design the message split and the precoders for this RadCom system such that the Weighted Sum Rate (WSR) is maximized and the transmit beampattern is approximated to the desired radar beampattern under an average transmit power constraint at each antenna. We then propose a framework based on Alternating Direction Method of Multipliers (ADMM) to solve the complicated non-convex optimization problem. Results highlight the benefits of RSMA to unify RadCom transmissions and to manage the interference among radar and communications, over the conventional Space-Division Multiple Access (SDMA) technique.
