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US 2015/0092556 A1Published application
Two-stage precoding and user grouping for large scale multiple-input multiple-output (mimo) systems
AssigneeNEC Laboratories America, Inc.
InventorsNarayan Prasad, Sampath Rangarajan, Guosen Yue, Yi Xu
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Abstract
Methods are provided. A method includes determining respective weighted likelihoods corresponding to a plurality of users in a multiple-input multiple-output communication system. The method further includes forming a plurality of user groups from the plurality of users using an iterative K-means clustering technique applied to the plurality of users. The iterative K-means clustering technique is responsive to the respective weighted likelihoods.
Claims20
A method, comprising:
- determining respective weighted likelihoods corresponding to a plurality of users in a multiple-input multiple-output communication system;
- and
- forming a plurality of user groups from the plurality of users using an iterative K-means clustering technique applied to the plurality of users, the iterative K-means clustering technique being responsive to the respective weighted likelihoods.
A method, comprising:
- calculating respective rate gains for each of a plurality of users responsive to respectively adding each of the plurality of users to a given time slot in a multiple-input multiple-output communication system;
- finding a maximum rate gain from among the respective rate gains;
- and
- scheduling a given one of the plurality of users with the maximum rate gain for the given time slot.
1 more element
Dependencies are inferred from the claim text.