Coordinated Multi-channel Transmission Scheme for Indoor Multiple Access Points VLC Networks

2019 ◽  
Author(s):  
Cong-Nam Tran ◽  
Trong-Minh Hoang ◽  
Nam-Hoang Nguyen
Keyword(s):  
Multiple Access ◽  
Transmission Scheme ◽  
Access Points

scholarly journals Distributed user-to-multiple access points association through deep learning for beyond 5G

2021 ◽  
pp. 108258
Author(s):  
Thi Ha Ly Dinh ◽  
Megumi Kaneko ◽  
Keisuke Wakao ◽  
Kenichi Kawamura ◽  
Takatsune Moriyama ◽  
...  
Keyword(s):  
Deep Learning ◽  
Multiple Access ◽  
Access Points

scholarly journals Non-Orthogonal Multiple Access in Multiuser MIMO Configurations via Code Reuse and Principal Component Analysis

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1330
Author(s):  
Panagiotis K. Gkonis ◽  
Panagiotis T. Trakadas ◽  
Lambros E. Sarakis
Keyword(s):  
Principal Component Analysis ◽  
Interference Cancellation ◽  
Correlation Matrix ◽  
Multiple Access ◽  
Multiple Input Multiple Output ◽  
Principal Component ◽  
Component Analysis ◽  
Inner Product ◽  
Transmission Scheme ◽  
Code Reuse

The goal of the study presented in this paper is to evaluate the performance of a proposed transmission scheme in multiuser multiple-input multiple-output (MIMO) configurations, via code reuse. Hence, non-orthogonal multiple access (NOMA) is performed. To this end, a correlation matrix of the received data is constructed at the transmitter, with feedback as only the primary eigenvector of the equivalent channel matrix, which is derived after principal component analysis (PCA) at the receiver. Afterwards, users experiencing improved channel quality (i.e., diagonal terms of the correlation matrix) along with reduced multiple access interference (i.e., the inner product of transmission vectors) are the potential candidates for their assigned code to be reused. As the results indicate, considering various MIMO configurations, the proposed approach can achieve almost 33% code assignment gain (CAG), when successive interference cancellation (SIC) is employed in mobile receivers. However, even in the absence of SIC, CAG is still maintained with a tolerable average bit error rate (BER) degradation.

E-Book Management: A Multiple Access Points Approach

2012 ◽  
Vol 9 (2) ◽  
pp. 103-113 ◽  
Author(s):  
Jie Li ◽  
Justin C. Robertson ◽  
Andrea L. Wright ◽  
Robert M. Britton
Keyword(s):  
Multiple Access ◽  
Access Points
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