Introduction:

TDD-COFDM is our new NLOS(non-line of sight) two-way data transmission system and wireless mobile emergency communication private network, which is independent of telecom operators wireless network. Its confidentiality,security, mobile performance are better than Telecom operators. Also, it is a fully transparent data encryption transmission emergency security network. TDD-COFDM multiplexing technology to channel resources in time through time slot, frequency through a large number of sub carriers to flexibly allocated to multiple users, and in a single frequency to maximize the realization of multi user access. System occupy relatively narrow-band air frequency (4/8MHz)and strong anti-multipath interference ability to overcome simulation technique and the high-speed mobile data transmission under multipath reflections and nuisance caused by occlusion, then achieved in a complex environment transfer: data packing form, audio and video data, serial asynchronous data, Miniature volume, precision design, lightweight and easy to carry that commonly used in short distance high speed wireless data transmission and on air long distance high speed wireless data transmission purposes.

Features of tdd wireless transceiver:
1. Advancement: TDD-COFDM channel modulation technology, support fast-moving,ultra-wide band, and fully transparent transmission.
2. Security: private network, private communication transport protocol, sole synchronization code and AES encryption. and also customer manually customize the secret key
3. Flexibility: transparent transmission of IP data channel, supports multi-user access.
4. Scalability: all-digital network, is compatible with all IP data transmission equipment.
5. Bit rate can up to 921600bps;
6. Support protocol PTP &PMD network technology;
7. Support non-line of sight(NLOS) high speed mobile transmission
8. Standard RJ45 Ethernet and RS485/RS485/RS422 data interfaces;
9. Built in with small LCD screen that shows the signal working status. 
10. Available frequency: 330-430MHz/ 430-530MHz,or 2.4GHz (option).

Technical performance of cofdm video transceiver:
1. Multi-frequency network base stations,single base station same frequency network, the same frequency network with bidirectional communication, high spectrum efficiency;
2.  Flexible allocation of channel resources to achieve PTP, PTMT and multipoint-to-multipoint two-way communication;
3.  Multiple channel bandwidth and a variety of modulation mode function;
4. Flexible TDD slot allocation model to meet a single-frequency but multi-user access, not only save the spectrum but also to reduce power consumption;
5. Spectrum sensing, perception slot, upstream bandwidth sensing function;
6. Strong diffraction ability and anti-multipath capability
7. High-sensitivity receiver.When receive level is -110dBm, can still ensure BER <10E-5 and frame error rate <1%. Powerful error correction capability;
8. Low PAPR, high power amplifier efficiency, low power consumption;
9. Can transmit video audio and etc signals synchronous,high speed.Velocity >600km/h.
10.Digital signal processing, a strong system of confidentiality, stability and reliability.

 Specification of wireless video transmitter

 As its Miniature volume, precision design,lightweight and easy to carry, it’s suitably used in short distance and long range air high speed wireless video data transmission purposes. Such as UAV, rotorcraft, micro UAV, drone,UGV, unmanned powered parachute, unmanned underwater vehicles boats, Fire-fighting robot,unmanned ship, airship, USV, high iron, EMU, unmanned vehicles, unmanned vehicle and etc..data transmission.

• One year free warranty;
• Three months for free spare parts (Replacement parts will be charged after a year);
• 24-h technical guidance;
• One-stop ODM/OEM solution;
• Over 15 years experience in studying, manufacturing and customizing in wireless AV transmission area;
• Professional manufacturer, offering top quality with competitive price, and decent after-sale service.