Robust multi-group multicast beamforming method

• Main Authors: LIU WEI, QIAN LIANG, YI DUYU, DING LIANGHUI, YANG FENG
• Format: Patent
• Language: Chinese; English
• Published: 29.10.2019
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION

The invention relates to a robust multi-group multicast beamforming method. The method comprises the following steps: firstly, obtaining two basic scenes in the field of multi-group multicast; ensuring that the minimum SNR in users meets a given condition and maximizing the robust beamforming problem under the minimum SNR in the users to be relaxed into a convex problem for solving; and then usingthe obtained solution to relax the non-convex problem in the next iteration and iteratively solve the non-convex problem by using a continuous convex approximation method, and obtaining an optimal solution finally approaching the original problem through continuous iteration steps. Compared with the prior art, the method has the advantages of being good in robustness, low in complexity, suitablefor requirements of actual engineering and the like. 本发明涉及一种鲁棒多组多播波束形成方法，该方法首先获得多组多播领域的两个基本场景：保证用户中最小的SNR满足给定条件和最大化用户中最小的SNR下的鲁棒波束形成问题松弛为凸问题进行求解；然后利用连续凸逼近方法，将得到的解用来松弛下一次迭代中的非凸问题并迭代求解，通过不断地迭代步骤得到最终逼近原问题的最优解。与现有技术相比，本发明具有鲁棒性能较好，