Paper Info
Title
Tcgtr-Based Channel Estimation For Cooperative Multi-Cell Large Scale Antenna Systems
Abstract
In this paper, a cooperative channel estimation strategy is proposed in multi-cell large scale antenna systems (so-called "massive MIMO"). Based on time-shifted uplink pilot sequences, the strategy can alleviate the performance degradation caused by the pilot contamination. In addition, the truncated conjugate gradient trust region (TCGTR) algorithm is proposed to estimate the channel vectors. The TCGTR algorithm, as an iterative regularization method, is widely used for large scale optimization because of its remarkable performance and fast convergence. The novelty of the TCGTR algorithm lies in the fact that it has never been used for channel estimation before. The complexity of the TCGTR algorithm is analyzed in this work. The simulation results show that this proposed algorithm significantly outperforms the noncooperative channel estimation.
Year
Venue
Keywords
2015
2015 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATION WORKSHOP (ICCW)
Large scale antenna, cooperative channel estimation, time-shifted pilot, TCGTR
Field
DocType
ISSN
Conjugate gradient method,Convergence (routing),Trust region,Mathematical optimization,Computer science,Communication channel,MIMO,Interference (wave propagation),Telecommunications link,Bit error rate
Conference
2164-7038
Citations 
PageRank 
References 
0
0.34
12
Authors
4
Name
Order
Citations
PageRank
Tianhang Yu100.34
Minjian Zhao211827.18
Yunlong Cai38611.26
Jie Zhong417114.53