论文标题
MIMO干扰通道中的干扰对准和取消（IAC）的封闭形式的收发器设计
A Closed-form Transceiver Design for Interference Alignment and Cancellation (IAC) in MIMO Interference Channel
论文作者
论文摘要
对于K-用户干扰通道，可以通过干扰比对（IA）实现的自由度（DOF）被限制为受TX/RX天线数量控制的信号空间维度。为了克服这个问题，可以将IA与干扰取消（IC）结合使用，涉及与不同用户之间的回程链接相关的新接收器体系结构，因为另一种干扰缓解方案，称为干扰一致性和取消（IAC）。在我们较早的工作中，通过提出IAC图，我们为IAC存在封闭形式的解决方案的必要条件，以根据给定的DOF要求单个用户。此外，我们还表明，它可以实现理论上最大可能的DOF，对于MIMO系统，具有M TX/RX天线为2M。在以前的IAC著作之后，我们旨在研究设计标准，以在存在时获得这种封闭形式的收发器。我们首先针对单个用户的任何给定DOF要求开发了一般的闭合IAC收发器设计，然后我们指定如何设计最佳的IAC收发器，以实现理论上最大的DOF为2M的最大DOF，超过了传统IA的性能，并且计算复杂性较小。
For a K-user interference channel, the degree of freedom (DoF) which can be achieved through interference alignment (IA) is constrained to signal space dimension governed by the number of Tx/Rx antennas. To overcome this problem, IA can be combined with interference cancellation (IC), involving a new receiver architecture associated with signaling over backhaul links among the different users, as another interference mitigation scheme which is referred to as interference alignment and cancellation (IAC). In our earlier work, by proposing an IAC graph, we have derived the necessary and sufficient conditions for the existence of closed-form solutions for IAC subject to the given DoF requirement for individual user. Furthermore, we have also shown that it can achieve the theoretically maximum possible DoF, which is 2M for MIMO system with M Tx/Rx antennas. Following our previous works on IAC, we aim to investigate the design criteria to obtain such closed-form transceivers when they exist. We first develop a general closed-form IAC transceiver design for any given DoF requirement of individual user and then, we specify how the optimal IAC transceiver can be designed to achieve the theoretically maximum DoF of 2M, beating the performance of conventional IA with much less computational complexity.
