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8/3/2019 15 09 0654-00-0007 Mimo Vlc Scheme for Scalable Data Rate Transmission
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doc.: IEEE 802.15-09-0654-00-0007
Submission
September 2009
Kye San Lee.Jae Sang Cha,Yeong Min Jang et al.Slide 1
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: MIMO-VLC scheme for Scalable Data Rate Transmission
Date Submitted: September 2009
Source: *Kye San Lee [Kyunhee Univ] **.Jae Sang Cha[ Seoul National Univ. Of Technology], ***Yeong Min Jang[ Kookmin Univ.]Dong Ho Cha [Kyunhee Univ], Su Jin Bae[Kyunghee Univ.]
Address
Voice:82-10-4455-4370, 5624, E-Mail: * [email protected], ** [email protected], **[email protected]
Re:
Abstract: MIMO-VLC scheme for Scalable Data Rate Transmission
Purpose:
Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for
discussion and is not binding on the contributing individual(s) or organization(s). The material in thisdocument is subject to change in form and content after further study. The contributor(s) reserve(s) the right
to add, amend or withdraw material contained herein.
Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE
and may be made publicly available by P802.15.
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doc.: IEEE 802.15-09-0654-00-0007
Submission
September 2009
Kye San Lee.Jae Sang Cha,Yeong Min Jang et al.Slide 2
y Background :
y Visible Light Communication system(VLC)y Combined system with LED Lighting & Communication
with some advantages as
< lighting device>
y low power consumption
y longer lifetime
y small size
y etc
< communication device >
y Visible LED light has higherpower than IR wireless comm.
y New Green comm. Tech.
y No EMI/EMC to human body
+
y Demand of VLC applications (Multimedia services,P2P
service etc.) require more increased (high) data
transmission
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doc.: IEEE 802.15-09-0654-00-0007
Submission
September 2009
Kye San Lee.Jae Sang Cha,Yeong Min Jang et al.Slide 3
y Application example :
yMobile to Mobile Service (P2P) usingBluetooth or UWB
y Bluetooth : 2Mbps (Low rate)
y UWB :450 Mbps (High rate)
y However, EMI & Frequency interference problems
are severe
y MIMO-VLC scheme with Scalable Data Ratetransmission structure could be one solution of above
limitations
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doc.: IEEE 802.15-09-0654-00-0007
Submission
September 2009
Kye San Lee.Jae Sang Cha,Yeong Min Jang et al.Slide 4
y Proposed system
y Scalable data rate : < 1G bps
y MIMO-VLC Scheme
y based on VLC with OFDM & MIMO technology.
y It does not suffer from EMI.
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doc.: IEEE 802.15-09-0654-00-0007
Submission
September 2009
Kye San Lee.Jae Sang Cha,Yeong Min Jang et al.Slide 5
y Proposed system
y Could accommodate the increased demand ofMultimedia services.
y Could achieve Scalable (High/Medium/Low) Date
Transmission.
y
Use OFDM & MIMO technology.y Use Multiplexing technique using R,G,B LED waves
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doc.: IEEE 802.15-09-0654-00-0007
Submission
September 2009
Kye San Lee.Jae Sang Cha,Yeong Min Jang et al.Slide 6
y System Description.
y
Transmission Side
y Receiver Side
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doc.: IEEE 802.15-09-0654-00-0007
Submission
September 2009
Kye San Lee.Jae Sang Cha,Yeong Min Jang et al.Slide 7
y System Description.
y Diversity Gain Scheme.
y Transmit different data - increase data rate
y Transmit same data - frequency diversity
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doc.: IEEE 802.15-09-0654-00-0007
Submission
September 2009
Kye San Lee.Jae Sang Cha,Yeong Min Jang et al.Slide 8
Fig. 1-1. VLC-MIMO scheme in the Case of.
1-chip LED
Concept of MIMO-VLC
8/3/2019 15 09 0654-00-0007 Mimo Vlc Scheme for Scalable Data Rate Transmission
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doc.: IEEE 802.15-09-0654-00-0007
Submission
September 2009
Kye San Lee.Jae Sang Cha,Yeong Min Jang et al.Slide 9
Fig. 1-2. VLC-MIMO scheme in the case of . Fig. 1-3. VLC-MIMO scheme in the case of .
Concept of MIMO-VLC
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doc.: IEEE 802.15-09-0654-00-0007
Submission
September 2009
Kye San Lee.Jae Sang Cha,Yeong Min Jang et al.Slide 10
Semiangle at half power
FOV of a terminal
Physical area of a PD
60.0[deg]
74.0[deg]
1.0[cm2]
Optical modulationPrimary modulation
Original data rate of each color
Original data rate of 1chip
Background light noise
Optical channel model
IM-DD
OFDM-BPSK
400[Mbps]
400[Mbps]
0.0[dBm]
Directed LOS path
(only AWGN channel)
O/E conv. Efficiency of blue LED
O/E conv. Efficiency of green LED
O/E conv. Efficiency of red LED
0.40[A/W]
0.48[A/W]
0.52[A/W]
O/E conv. Efficiency of 1chip LED 0.53[A/W]
TA
BLE 1. simulation parameters
red green blueEfficiency
(lm/W)
type 1
Mixture
ratio
1 0.89 2.51 291
type 2 1 1.43 2.29 317
type 3 1 2.62 1.96 391
type 4 1 11.17 7.19 413
TA
BLE 2. The mixture ratio of three colors[1]
Simulation Parameter
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doc.: IEEE 802.15-09-0654-00-0007
Submission
September 2009
Kye San Lee.Jae Sang Cha,Yeong Min Jang et al.Slide 11
VLC-OFDM with 3-chip white LEDs for the frequency diversity gain.
Fig. 2. BER performance of the 3-chip OFDM system for the increaseof capacity compared with the 1-chip OFDM system in delay time 8ns
Fig. 3. BER performance of the 3-chip OFDM system for the frequencydiversity gain compared with the 1-chip OFDM system in delay time 8ns
Simulation example of VLC-OFDM
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doc.: IEEE 802.15-09-0654-00-0007
Submission
September 2009
Kye San Lee.Jae Sang Cha,Yeong Min Jang et al.Slide 12
Conclusion Presented MIMO-VLC scheme is based on OFDM technique.
MIMO-VLC technologies could achieve various Data Rate.
Furthermore, proposed scheme also could be applied for
various VLC applications with Scalable Data Rate.