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1. 发明授权

US08498193B2 Method for selection of an optimized number of subscribers in mobile radio systems 有权
标题翻译：用于在移动无线电系统中选择优化用户数量的方法
公开(公告)号：US08498193B2
公开(公告)日：2013-07-30
申请号：US11991735
申请日：2006-09-22
申请人： Martin Haardt , Martin Fuchs-Lautensack , Giovanni Del Galdo
发明人： Martin Haardt , Martin Fuchs-Lautensack , Giovanni Del Galdo
IPC分类号： H04J11/00
CPC分类号： H04B7/0619 , H04B7/0452
摘要： This invention comprises a method of little complexity for selection of an optimized number of subscribers for transmission in wire-free message transmission systems having a plurality of antennas at the base station and having one or more antennas at the receivers, as well as space-division multiple access (SDMA) in conjunction with multiple access in the time domain or frequency domain. Subscribers with channels with little spatial correlation are selected for operation in the same time slot or frequency slot, in order to increase the throughput of the SDMA transmission method, with the relationship between the group size and the mean transmission power being taken into account. The invention interacts both with SDMA methods which do not allow any interference (Zero Forcing) and with methods with residual interference. It is based on a novel interpretation of the ZF principle with the aid of orthogonal projection matrices, which allow the channel quality to be estimated with much less computation complexity, based on use or the transmission method. The possible subscriber combinations are sorted efficiently with the aid of a tree-like search algorithm. The method makes use of perfect channel knowledge or alternatively averaged channel statistics. Quality of service requirements for the subscriber as well as fairness criteria can be taken into account.
摘要翻译：本发明包括一种在基站具有多个天线并且在接收机处具有一个或多个天线的无线消息传输系统中用于选择用于传输的优化用户数目的复杂度少的方法，以及空分多次访问（SDMA）结合时域或频域中的多次访问。选择具有很小的空间相关性的信道的用户在相同的时隙或时隙中进行操作，以便考虑到组大小和平均发射功率之间的关系来增加SDMA传输方法的吞吐量。本发明与不允许任何干扰（零强制）的SDMA方法和具有残留干扰的方法相互作用。它是借助于正交投影矩阵对ZF原理的一种新颖的解释，这使得基于使用或传输方法，可以以更少的计算复杂度来估计信道质量。借助于树形搜索算法可以有效地对可能的用户组合进行排序。该方法利用完美的频道知识或平均的频道统计。可以考虑到用户的服务质量要求以及公平性标准。

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