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Digital TDD-OFDM Portable Base Station for Wireless Communication

Categories Portable Base Station
Brand Name: LinkAV
Model Number: TJ340-5W
Certification: CE Applicable
Place of Origin: China
MOQ: 1
Supply Ability: 1000pcs
Delivery Time: 20 Days
Packaging Details: Standard Export Packaging
Payment Terms: L/C, T/T, Western Union, MoneyGram
Material: Aluminium
Color: Black
Samples: Available
Packaging: Carton Box
System: PAL/NTSC
Type: Base Station
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    Digital TDD-OFDM Portable Base Station for Wireless Communication

    Digital TDD-OFDM Portable Base Station for Wireless Communication


    Introduction:

    Using the TDD method, a single frequency channel is assigned to both the transmitter and the receiver. Both the uplink (UL) and downlink (DL) traffic use the same frequency f0 but at different times.


    In effect, TDD divides the data stream into frames and, within each frame, assigns different time slots to the forward and reverse transmissions. This allows both types of transmissions to share the same transmission medium (i.e., the same radio frequency), while using only the part of the bandwidth required by each type of traffic.


    Several inferences can be drawn from this description:

    1. Since the TDD scheme can allocate dynamically the amount of time slots assigned to each direction -- transmit and receive-- an operator can define the percentage of UL versus DL traffic. This is especially important for Internet-type traffic (the ratio for UL/DL is no longer constrained to a fixed 50/50).
    2. A guard band is not required to separate the UL and DL channels, because they both use the same frequency – hence, there is no loss in spectrum. A guard period, though, is necessary for synchronization purposes and to accommodate the turnaround time and the round trip delay whenever switching transmission from DL to UL, and vice versa.
    3. Because the UL/DL allocation is dynamic, there is very little waste of spectrum for asymmetric operations, i.e., last-mile applications, where typically the UL traffic is a fraction of the DL traffic. (Some spectrum is still lost for the guard periods, but this is negligible compared to the total length of data in a time slot).

    Product Features:

    1. Inserted modular functionalized, data transmission and display integration
    2. Stable power and adjustable dynamic power
    3. Support 8 channel video decoding, built-in soft matrix, data storage
    4. Single carrier frequency support up to 4 simultaneous users two-way data transmission
    5. Encryption: AES 128 bit, flexible power supply
    6. Built-in microphone for phone talk and PTZ control.

    Technical Parameters:


    Item

    TJ340-700-5W


    RF Parameter

    Working Frequency

    700MHz

    Modulation Bandwidth

    2 / 4 / 8MHz


    Modulation Type

    TDD-OFDM


    Communication Mode

    TDMA Full Duplex


    Power Output

    37dBm


    Band Flatness

    ≤ ±0.5dB


    Spurious Spectrum

    ≤ -36dBm


    Third-order IMD

    ≤ -36dBC


    Receiving Sensitivity

    ≤ -100dBm


    MER

    ≥ 36dB


    Anti-adjacent Frequency Interfere

    ≥ 40dB


    Data

    Synchronization Control

    GPS/Beidou with Synchronized clock


    Transmission Bandwidth

    Up to 14Mbps


    Network Protocol

    IP/TCP,UDP,HTTP,SMTP etc


    Business Unit

    Video Decoder

    8-channel D1 or 4-channel 720p video decoding(similar to Matrix)

    Display

    14 inches HD display


    Voice Communication

    Built-in amplifier speakers ,sound pick-up ( more than 10 meters )


    Data Storage

    1T HDD


    Generic Specification

    Working Temperature

    -30 ~ +70°C


    Working Voltage

    DC12V Battery (work for 3 hours)


    Power Consumption

    15~30W


    Size

    385*310*90mm


    Net Weight

    ≤10Kg


    Connector

    Power Interface

    DC Head


    Data Connector

    USB


    Network Interface

    RJ45


    RF Antenna Terminal

    NF Female



    Background:


    Zhongchuang Tech is specialized in COFDM, TDD and 3G/4G wireless video transmission products for over 9 years, including video wireless transmitter, video wireless transmitter and receiver, quality video wireless transmitter, products are applied widely among Public Security Bureaus, Forest Fire Prevention Departments, Maritime Bureaus, Oil Field, Construction Sites, Tunnels,UAV, Automobiles and so on.


    Quality Digital TDD-OFDM Portable Base Station for Wireless Communication for sale
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