公开(公告)号：US20170264410A1

公开(公告)日：2017-09-14

申请号：US15503722

申请日：2014-12-29

Applicant: SOUTHEAST UNIVERSITY

Inventor： Hua ZHANG ,  Xinru ZHENG ,  Wei XU

IPC: H04L5/00 ,  H04L25/02 ,  H04W72/04 ,  H04B7/0452

CPC classification number: H04L5/0048 ,  H04B7/0452 ,  H04L5/0023 ,  H04L5/006 ,  H04L5/0085 ,  H04L5/1469 ,  H04L25/0222 ,  H04W72/048

Abstract: Disclosed is a pilot allocation method based on coherence time for a large-scale multiple input multiple-output (MIMO) system. The present invention achieves optimal allocation of pilot resources by fully utilizing the feature that different users possibly have different moving speeds and coherence time of corresponding channels is accordingly different, thereby improving overall data transmission performance of the system and achieving certain practicability. Moreover, the present invention effectively uses limited transmission resources in the case of limited total transmission resources, thereby improving overall data transmission performance of the system and effectively reducing pilot contamination.