基于用户归一化可达和速率MSE的导频分配方案  

Pilot allocation scheme based on the MSE of the user’s normalized achievable sum rate

作　　者：曹海燕[1] 马智尧 周冬 许方敏[1] 方昕[1] CAO Haiyan;MA Zhiyao;ZHOU Dong;XU Fangmin;FANG Xin(School of Communication Engineering,Hangzhou Dianzi University,Hangzhou Zhejiang 310018,China;Nanjing Institute of Huawei Technologies Co.LTD,Nanjing Jiangsu 210029,China)

机构地区：[1]杭州电子科技大学通信工程学院,浙江杭州310018 [2]华为技术有限公司南京研究所,江苏南京210029

出　　处：《杭州电子科技大学学报（自然科学版）》2021年第1期7-12,30,共7页Journal of Hangzhou Dianzi University：Natural Sciences

基　　金：国家自然科学基金资助项目(61501158);浙江省自然科学基金资助项目(LY14F010019,LY20F010009)。

摘　　要：在多小区大规模MIMO系统中,导频复用导致相邻小区导频污染。为了减少导频污染,并兼顾各用户可达和速率的公平性,提出一种基于各用户的归一化可达和速率MSE的导频分配方案。通过提高用户最小可达和速率来提高全用户的平均可达和速率,在此基础上,提出将随机导频分配与各用户的归一化可达和速率MSE算法结合起来的导频分配方案。仿真结果表明,提出的导频分配方案既能有效保证系统平均可达和速率,又能保证用户的最小可达和速率。In a multi-cell massive MIMO system, pilot multiplexing causes pilot pollution in neighboring cells. To reduce pilot pollution and take into account the fairness of user’s achievable sum rate, this paper proposes a new allocation scheme based on the MSE of each user’s normalized achievable sum rate, which can improve the user’s average achievable sum-rate by increasing the user’s minimum achievable sum rate. Based on this, a scheme combining the random pilot allocation and each user’s normalized achievable sum rate MSE algorithm is further proposed. Simulation results show that the proposed pilot allocation scheme can effectively ensure the average achievable sum rate of the system and the minimum achievable sum rate of each user.

关 键 词：大规模MIMO 导频分配 导频污染 可达和速率 

分 类 号：TN911.53[电子电信—通信与信息系统]