Paper Info
Title
Multi-user MIMO-OFDM for indoor visible light communication systems
Abstract
In this paper, we investigate an indoor multiuser visible light communication system employing multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM). For each subcarrier in OFDM, the corresponding precoding matrix is calculated in the frequency domain to eliminate multi-user interference. The distances of the multiple transmitter-receiver links are different, which results in various temporal delays and phase differences in the frequency domain. Phase information is firstly considered, whereby complex instead of real channel matrices are used for precoding, which reduces the channel correlation and achieves better performance. Moreover, two DC bias and scaling factor calculation schemes are proposed, and their performances are compared with zero forcing and minimum mean-squared error (MMSE) precoding techniques. © 2015 IEEE.
Year
DOI
Venue
2015
10.1109/GlobalSIP.2015.7418382
2015 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2015
Keywords
Field
DocType
multi-user,multiple-input multiple-output,orthogonal frequency-division multiplexing,precoding,Visible light communication
Subcarrier,MIMO-OFDM,Multi-user MIMO,Control theory,MIMO,Electronic engineering,Visible light communication,Zero-forcing precoding,Precoding,Orthogonal frequency-division multiplexing,Mathematics
Conference
Citations 
PageRank 
References 
0
0.34
12
Authors
5
Name
Order
Citations
PageRank
Qi Wang114210.51
Zhaocheng Wang22359147.30
Chen Qian3716.13
Quan Jinguo4516.29
Linglong Dai52713135.60