Inter-Cell Antenna Calibration for Coherent Joint Transmission in TDD System

被引：0
作者：
Xu, Hanqing [1 ]
Zhao, Yajun [1 ]
Mo, Linmei [1 ]
Huang, Chen [1 ]
Sun, Baoyu [1 ]
机构：
[1] ZTE Corp, Baseband Algorithm Dept, Beijing, Peoples R China
来源：
2012 IEEE GLOBECOM WORKSHOPS (GC WKSHPS) | 2012年
关键词：
LTE-Advanced; TDD; CoMP; JT; reciprocity error; phase difference; inter-cell antenna calibration;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this work the modeling and calibration method of reciprocity error in a coherent TDD coordinated multi-point (CoMP) joint transmission (JT) system are addressed. The modeling includes parameters such as amplitude gains and phase differences of RF chains between the eNBs. The calibration method used for inter-cell antenna calibration is based on precoding matrix indicator (PMI) feedback by UE. Furthermore, we provide some simulation results for evaluating the performance of the calibration method in different cases such as varying estimation-period, cell-specific reference signals (CRS) ports configuration, signal to noise ratio (SNR), phase difference, etc. The main conclusion is that the proposed method for inter-cell antenna calibration has good performance for estimating the residual phase difference.
引用
收藏
页码：297 / 301
页数：5
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