Beam forming optimization method of online NOMA multi-antenna system based on Lyapunov theory

The invention provides a beam forming optimization method of an online NOMA multi-antenna system based on the Lyapunov theory. An online mode is considered, the data causality is solved via the Lyapunov theory, a long-term time average optimization problem is converted into an optimization problem o...

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Hauptverfasser: QIN JIAYIN, GONG QIANYUN, ZHANG QI, LI QUANZHONG, HUANG SHAN
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention provides a beam forming optimization method of an online NOMA multi-antenna system based on the Lyapunov theory. An online mode is considered, the data causality is solved via the Lyapunov theory, a long-term time average optimization problem is converted into an optimization problem of each moment, slack variables are imported by using a concave-convex optimization algorithm, multi-dimensional first-order Taylor expansion is performed to solve the non-convex problem of objective functions and constraints, and optimal beam forming and power allocation schemes at each moment are obtained through iteration. 本发明考虑在线模式,借鉴李雅普诺夫理论解决数据因果性,将长期时间平均优化问题化成每个时刻的优化问题,利用凹凸优化算法引入松弛变量,进行多维阶泰勒展开,解决目标函数和约束非凸的问题,通过迭代得到每个时刻最优的波束成形和功率分配方案。