Data rate optimization in inter-cell interference environment of visible light communication

Data rate optimization in inter-cell interference environment of visible light communication This paper investigates the higher-order modulation using Hadamard matrix to improve the data rate performance, particularly in the interference regions of a multi-cell environment in visible light communication. It presents a novel scheme which utilizes Hadamard matrix to produce orthogonal pulses (OPs) that mitigate the inter-cell interference, and covers the interference areas of the room for mobile receivers. The minimum power requirements is examined to achieve optimum data rate in whole area of the room. Moreover, the signal-to-noise ratio is derived to provide the similar capacity distribution between cells. Theoretical analysis and simulation experiments of bit error rate (BER) and capacity performances are conducted and three arrangements of signals in cells are compared, which are defined as all cells use different sets of OPs (DSOPs), all cells use the same set of OPs (SSOPs) and reuse OPs in diagonal (ROPD) cells of the room. The results show that the BER performance of DSOPs is $$10^{-2.7}$$ 10 - 2.7 at the high interference area, which is the best performance compared to ROPD and SSOPs. Moreover, DSOPs requires less power to achieve 2, 3 and 4 bits/symbol compared to ROPD and SSOPs. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Photonic Network Communications Springer Journals

Data rate optimization in inter-cell interference environment of visible light communication

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Publisher
Springer US
Copyright
Copyright © 2015 by Springer Science+Business Media New York
Subject
Computer Science; Computer Communication Networks; Electrical Engineering; Characterization and Evaluation of Materials
ISSN
1387-974X
eISSN
1572-8188
D.O.I.
10.1007/s11107-015-0585-0
Publisher site
See Article on Publisher Site

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