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High Gain Antenna

OBU (On Board Unit)

- By integrating the MAC of each IEEE 802.11p, IEEE 1609.4 standard 2-Channel System implemented as a single chip.

- Crypto Engine Implementation for IEEE 1609.2 support.

- Due to the miniaturization, Simple vehicle load is possible

- In the high-speed wireless communication environment, it is possible to secure stable communication performance. The initial motivator and a chaannel estimator, diversity is equipped.

- Ensuring reliable operation in vehicle environments. Reliability and environmental conditions that is pursuant to car manufacturers Specification is

satisfied.

- Support of less than +20dBm maximum output per Port.

- Via the Mini USB jack, updates can be supported

- Through the status LED, Confirm whether communication is also possible and Power operation check is possible.

functions and characteristics.

The purpose of the OBU(On Board Unit) is user-centered next generation traffic safety services. OBU is the vehicle terminal equipment to provide more reliable customized service to our customers through the mutual communication between terminal of the vehicle during driving or stopping (OBU) and surrounding base stations (RSU, Road Side Unit).

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Product

System Diagram

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ITS Solutions

High Gain Antenna

Specification■ Normal Specification

OBU Specification

Standards Support

IEEE 1609.2 (Security) IEEE 1609.3 (MAC/PHY) IEEE 1609.4 (Multichannel) IEEE 802.11p

Traffic Rates 3M, 4.5M, 6M, 9M, 12M,18M 24M, 27M

Channel Switching Time <= 3ms

Platform Linux

Data and Management Planes UDP/TCP and WSMP support Manages WAVE Basic Service Set(WBSS) Application Management

Frame Support Support for WAVE Data and Management Frames

Application Support

Menu-Driven tool IP Based applications WSM based applications Periodic transmit of (Difference) GPS data Remote and Logging applications

Dual Channel (Modem) Diversity / Dual Channel WAVE Modem Support

GPS Device Support for GPS Based Synchronization ublox GPS D-GPS (Optional)

Ethernet LAN I/F (100M bps)

H/W Processor : ARM926EJ Samsung S3C2450 Flash : SLC NAND Flash 256MB RAM : 64 Mbyte

UBS 2.0 USB 2.0 I/F

MMC I/F Support SD-Card for logging

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Intelligent Transport System

■Electronic specification

OBU Specification

Frequency 5.850 to 5.925 GHz (bandwidth 10M)

RF Power Up to 20dBm

Power Switch Rocker Switch

LED T/RX LED(RF1,RF2), GPS LED, Operating LED (Front View)

Waterproof IP66

Antenna Connector FAKRA

Operate Power OBU PCB Board Operating Voltage 12V

Operate Temperature -40 ~ +85°C

Antenna Omni Antenna Gain : > 8dBi

■ Physical performance standard

Modulation accuracy

• �EVM• Spectral Flatness• Frequency Leakage

Spectrum performance

• �Transmit Power• Spectrum Emission Mask• Center Frequency and Symbol• Clock Tolerance

Receiver Test

• �Minimum Input Sensitivity• ACR• CCA

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High Gain Antenna

Parameter■ Physical Layer Parameter

PARAMETER

Data rate (Mandatory) 3, 4.5, 6, 9, 12, 18, 24, 27 Mbps

Modulation BPSK, QPSK, 16QAM, 64QAM

FEC Convolution

Constraint length, Code rate K=7, R=1/2, 2/3, 3/4

The number of subcarrier 52 (48 data + 4 pilot)

OFDM Symbol duration(TSYM) 8us (TFFT + TGI)

Guard Interval (TGI) 1.6us

Bandwidth 10MHz

■ Physical Layer parameter

Data rate (Mbps)

Modulation Code rateBits per

subcarrier (NBPSC)

Coded bits per OFDM symbol

(NCBPS)

# of data bits per OFDM symbol

(NDBPS)

3 BPSK 1/2 1 1x48 = 48 24

4.5 BPSK 3/4 1 1x48 = 48 36

6 QPSK 1/2 2 2x48 = 96 48

9 QPSK 3/4 2 2x48 = 96 72

12 16QAM 1/2 4 4x48 = 192 96

18 16QAM 3/4 4 4x48 = 192 144

24 64QAM 2/3 6 6x48 = 288 192

27 64QAM 3/4 6 6x48 = 288 216

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