DocumentCode :
3595184
Title :
Coordinated pilot reuse for multi-cell massive MIMO transmission
Author :
Tengteng Lian ; Li You ; Wen Zhong ; Xiqi Gao
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
fYear :
2014
Firstpage :
492
Lastpage :
496
Abstract :
In this paper, we propose a coordinated pilot reuse (CPR) scheme for multi-cell massive multi-input multi-output systems to reduce the pilot overhead. Unlike the conventional pilot reuse scheme which allows pilots to be reused only among different cells, CPR allows inter- and/or intra-cell user equipments to reuse the same pilots, efficiently reducing the pilot overhead. For the spatially correlated Rayleigh fading channels, we first present the CPR-based channel estimation and a greedy pilot allocation algorithm. With the channel estimation errors due to CPR taken into account, we then develop a statistically robust transceiver which can guarantee the transmission performance. Monte-Carlo simulations show that compared to the conventional multi-cell pilot reuse scheme, the proposed CPR scheme provides significant performance gains in terms of the net spectral efficiency.
Keywords :
MIMO communication; Monte Carlo methods; Rayleigh channels; channel estimation; greedy algorithms; radio transceivers; Monte-Carlo simulations; Rayleigh fading channels; channel estimation; coordinated pilot reuse; greedy pilot allocation algorithm; inter-cell user equipments; intra-cell user equipments; multi-cell massive MIMO transmission; multi-input multi-output systems; transceiver; Channel estimation; Covariance matrices; Data communication; Interference; MIMO; Robustness; Signal to noise ratio;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Personal, Indoor, and Mobile Radio Communication (PIMRC), 2014 IEEE 25th Annual International Symposium on
Type :
conf
DOI :
10.1109/PIMRC.2014.7136215
Filename :
7136215
Link To Document :
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