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http://dx.doi.org/10.14400/JDC.2015.13.10.319

The blocking channel to reduce the performance decrease using the low correlation with cyclic delay scheme in LED-ID system  

Lee, Kyu-Jin (Dept. of Electronic Engineering, Semyung University)
Kim, Gui-Jung (Dept. of Medical IT Engineering, Konyang University)
Publication Information
Journal of Digital Convergence / v.13, no.10, 2015 , pp. 319-325 More about this Journal
Abstract
We proposed the blocking channel to reduce the performance decrease using the low correlation with cyclic delay scheme in LED-ID system. LED-ID is based on the visible light to transmit the data. However, It is occurred the block channel by structure or environment of indoor for light of straightness. LED-ID system is degraded the performance by the block channel as loss of data, and burst error. To solve the block channel, the proposed system is overcome the burst error by low correlation among data, which is able to obtain the maximize time diversity gain to improve the performance of BER by cyclic delay scheme. The BER performance is evaluated by computer simulation according to channel parameter. The simulation results shows that proposed system gives much better performance than conventional system and constant cyclic delay scheme system.
Keywords
Block Channel; Low correlation; Cyclic delay scheme; LED-ID; Time diversity gain;
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