论文标题
节能多源多型多型卫星通信的多播预编码
Energy Efficient Multicast Precoding for Multiuser Multibeam Satellite Communications
论文作者
论文摘要
为了最大程度地提高多播多层卫星通信的能源效率（EE），我们考虑了在总功率和服务质量（QOS）约束下的预编码设计。由于原始的EE最大化问题是非convex，因此通过引入某些变量并使用一阶Taylor Low Bound近似值，将其顺序转换为凹入式convex分数编程问题。根据Charnes-Cooper的转换，它进一步转化为凸问题。然后提出了一种迭代算法来设计能节能的预码。为了找到该算法的可行初始化点并确保其收敛性，迭代求解了一些非负松弛变量的另一个凸优化问题，并且有一些非负松弛变量和正惩罚参数。特别是，该算法通过多光束卫星通信的测量通道数据验证。
Aiming at maximizing the energy efficiency (EE) of multicast multibeam satellite communications, we consider the precoding design under the total power and quality of service (QoS) constraints. Since the original EE maximization problem is nonconvex, it is sequentially converted into a concave-convex fractional programming problem by introducing some variables and using the first-order Taylor low bound approximation. Based on the Charnes-Cooper transformation, it is further converted into a convex problem. Then an iterative algorithm is presented to design the energy efficient precoding. To find feasible initialization points for the algorithm and ensure its convergence, another convex optimization problem with some nonnegative slack variables and a positive penalty parameter is iteratively solved. In particular, the algorithm is verified by the measured channel data of multibeam satellite communications.
