OFDM Wireless Video Transmitter for IP Cameras Lightweight Long Range Transmission Automatic Networking RJ45

OFDM Wireless Video Transmitter for IP Cameras Lightweight Long Range Transmission Automatic Networking RJ45

one、product description
This system adopts a point-to-point based、Point-to-multipoint、A New Sub-Broadband "Wireless Networking" Based on AD-Hoc Networking Mode。MP-1401 organizes the network as a mobile center，its a centered、distributed、Multi-hop relay、Dynamic routing、Wireless broadband system with strong survivability and good scalability，Internal use of its own routing protocol, Internal use of its own routing protocol。Internal use of its own routing protocol。Excellent sub-broadband performance，System technology has strong anti-interference ability、High spectral efficiency、Long transmission distance、Anti-fading ability、Advantages such as strong diffraction ability。Can be complex、Real time in non-line-of-sight environment、High-quality wireless two-way data transmission function。
Facing drones in complex environments、robot、Unmanned boat platform information communication transmission，We follow generalization、Modular、Standardized design principles，Realize remote measurement of unmanned terminals on various water surfaces by ground control stations、remote control、High-speed real-time transmission of payload data and information collaboration and interaction function between unmanned terminals，System in continuous long time、stability、Reliable work。

two、Technical characteristics
* No complex system configuration is required after the central station is turned on, and the network is automatically formed after the on-site power-on，"Second level" to start communication ；
* Arbitrary topology、Multi-hop relay、Relay forwarding ；
* The logical attributes of each node can be flexibly configured；
* At present, the same frequency network can support 1024 nodes interconnection ；
* The channel uses AES encryption；
* The peak system data bandwidth is 32Mbps；

three、Hardware description

1) Adopting localized self-organized intellectual property technology，Private network，Using private communication transmission protocol，Unique synchronization code。

• AES 128-bit encryption technology：After the information data is encrypted by AES，Make it impossible to obtain information before encryption；
• OFDM pilot and data location scrambling encryption：The number of OFDM subcarriers is kept secret、Number of pilots kept secret、Pilot position confidentiality，Make it impossible to obtain pilot information for channel estimation and frequency domain equalization；The pilot frequency and data position change method adopts encryption method，Illegal users cannot distinguish pilot and data correctly。
• LDPC codeword structure encryption：LDPC codeword structure including code length、Information bit and parity bit；The position change of the information bit and check bit is encrypted，Illegal users cannot distinguish the information bit from the check bit correctly。

2) Using multiple encryption methods，Modular design；

3) center、distributed，All nodes are equal，Can be used to cover non-line-of-sight (NLOS)、Under complex conditions such as high-speed movement，Self-organized network，Realize TDD transceiver two-way communication；

4) Support point-to-point、Chain、Arbitrary network topology such as star，Can realize multi-channel IP sub-broadband data、Real-time interaction of multimedia information such as multi-serial data；

5) multi-hop relay，Each node can move randomly and quickly，When the system topology changes rapidly, the routing can be dynamically reconstructed accordingly；

6) Easy to deploy、Flexible to use、easy to use、Easy to maintain，And the all-IP design (supporting various data transparent transmission) is easy to realize the interconnection and intercommunication of heterogeneous systems，Especially suitable for wireless coverage transmission、Wireless Narrowband Data Networking；

Four、 Equipment technical parameters

1) Technical advantages

• Long transmission distance：Using COFDM modulation、Space-time coding、Transceiver diversity and other technologies，Receive sensitivity up to -104dBm，2W transmit power，Ground-to-air/air-to-air line-of-sight communication up to 40km，Ground-ground line-of-sight communication up to 20 km，It also has better anti-multipath interference and strong diffraction ability under non-line-of-sight environmental conditions；
• High transmission rate：Adopt BPSK/QPSK/16QAM/64QAM adaptive modulation、technologies such as receive diversity，Peak rate up to 32Mbps，Suitable for multi-hop transmission of larger traffic；
• Large network：Dynamic allocation of channel resources，The actual measurement can support 1024 nodes for networking；
• More relay hops：Data relay hops up to 16 hops，Expand network coverage，Enhance the applicability of web applications；

2)Features

• Anti-multipath interference：TDD-COFDM multi-carrier modulation has strong anti-multipath interference；
• Diffraction ability：Has strong diffraction and penetrating power；
• Dynamic routing：Layer 2 Intelligent Routing Protocol；
• flexibility：Strong scalability，Nodes can dynamically join and exit；
• Mobility：The maximum moving speed of the tested nodes is ≥4000 km/h；
• Operating mode：Star network、Chain net、peer to peer，Point-to-multipoint，Multipoint to multipoint；
• IP transparent transmission：Support network port ~ network port、Network port~Serial port、IP transparent transmission from serial port to serial port；
• Internet expansion：Effectively extend Internet coverage，Any terminal in the network can be used as a gateway，Each node of the network can access the Internet through the gateway node；
• Configuration management：Channels available to the radio、bandwidth、power、rate、IP，Key and other parameters to be set；
• Status Display：Dynamically display network topology、Link quality、Signal strength、Environmental noise, etc.；

3) performance parameters

• Communication frequency：1415~ 1465MHz （3G 2.4G），adjustable；
• Transmit power：2*30dBm（2*1W），1dBm step adjustable；
• Bandwidth mode： 4 / 8 MHz；
• Modulation：Multi-carrier TDD-COFDM；
• Carrier modulation：BPSK/QPSK/16QAM/64QAM (adaptive or fixed)；
• Receiving sensitivity：-110dBm @ 1MHz；
• Transmission delay：Single jump about 2ms；
• Start Time：peer to peer、Point-to-multipoint≤5S (AD-Hoc startup time 25S)；
• Access time：Less than 1 second；
• Routing switch：Less than 1 second；
• Data interface：Network port x 2，RS232 x 2；
• Battery powered：12V / 1；
• Whole machine power consumption：6~12W，Standby 6W，Receive 8W，Send 12W at full load；
• Operating temperature：-40~+70℃；
• size：long：73mm*width 47mm*height 10mm；
• weight：60g

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