In order to improve the uplink channel estimation performance and reduce pilot contamination(PC),this paper proposes a pilotallocationmethod of jointingcellgrouping and alliancegame(JCG-AG) for massive multiple-i...
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In order to improve the uplink channel estimation performance and reduce pilot contamination(PC),this paper proposes a pilotallocationmethod of jointingcellgrouping and alliancegame(JCG-AG) for massive multiple-input multiple-output(mimo) cellular *** can be divided into two ***,by properly dividing all cells into different cell-groups,the users in different cell-groups are allocated different orthogonal pilot ***,the users in the same cell-group are further divided into several mutually disjoint *** belonging to different sub-alliances are allocated different pilots,and users belonging to the same sub-alliance reuse the same *** the second step,the alliance formation algorithm is used to suppress *** JCG-AG method takes practical application as the starting point,focuses on the random distribution of users,and uses the idea of alliance *** these make it more flexible and *** demonstrated in the simulation results,the JCG-AG method can greatly mitigate the PC and reduce the average mean square error(MSE) for all channel estimations in the uplink.
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