Your Professional QAM Modulator Supplier

 

Our goal is to become your true partner in the field of 4k encoder China. DIGICAST focus on developing,manufacturing and sales for the products in digital TV/IPTV/OTT headend,video live application. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

 

 
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Why Choose Us

Our services:

In the pre-sales stage, our team of experts will recommend the most suitable products according to the needs of customers and provide detailed technical consultation. During the sales period, we ensure timely delivery and provide installation guidance. For after-sales, we provide long-term technical support, warranty services and spare parts to help customers maximize the use of products and get reliable maintenance during use.

Our certifications

We are ISO9001 certified and have passed international certifications.

Product market

Our products are highly sought after by customers worldwide, primarily in North America and Southern Europe.

Quality control

All products undergo a 100% comprehensive test of every function and a 24/7 professional burn-in test by our quality control department before delivery to ensure stable operation 24/7/365.

 

Advantages of QAM Modulator

High spectral efficiency

QAM combines amplitude and phase modulation, allowing for higher data rates within a given bandwidth compared to single-carrier modulation schemes. This results in improved spectral efficiency, making QAM suitable for high-speed data transmission systems.

Flexibility and scalability

QAM offers various constellation sizes (e.g., 16-QAM, 64-QAM, 256-QAM), enabling flexible data rates and trade-offs between spectral efficiency and bit error rate (BER) performance. Higher-order QAM constellations can transmit more bits per symbol, increasing data rates at the cost of reduced BER performance.

Orthogonal carriers

QAM utilizes two orthogonal carriers, allowing independent modulation and demodulation of the in-phase (I) and quadrature (Q) components. This orthogonality facilitates efficient separation and recovery of the transmitted data at the receiver.

 

Specification of QAM Modulator

 

Product name

QAM modulator

Channel

ISDB-T frequency

Frequency range

50-960Mhz, 1Khz one step

Constellation

DQPSK, QPSK, 16QAM, 64QAM

Guard Interval

1/32, 1/16, 1/8, 1/4

Transmission mode

2K, 4K, 8K

Code rate

1/2, 3/4, 5/6, 7/8

Bandwidth

6MHz

TS bit rate

<21 Mbit/s

MER

≥ 40 dB

 

 

Features of QAM Modulator

2*types tuners+HDMI input: For example: 8 dvbs/s2+8*dvb-t/t2+8*HDMI.


1*type tuner+ HDMI input: 12 dvbs/s2+8*HDMI.


Operation via lcd screen and web management: Easy to read lcd color front panel that makes it easy to setup and monitor your channels, check firmware, and identify ip addresses without a computer.


Professional broadcasting TV application: Support pcr correct and pcr interval adjusting,lcn.


Multi rf carriers out: 4/8/16 dvb-t/isdb-t/atsc/dvb-c or 32 qam dvb-c out option.

QAM In Digital Communication

 

Multi Channel RF Modulator

 

Applicable Scenarios of QAM Modulator

Wireless communications: Qam is extensively employed in wireless communication standards, such as 802.11 wi-fi, to transmit high-speed data. Its ability to achieve high spectral efficiencies by adjusting the constellation size makes it suitable for bandwidth-efficient data transmission.


Digital satellite television: Qam is used in digital satellite television systems like dvb-s and dvb-s2/s2x for high-speed information transmission. Its robustness against noise and interference makes it suitable for satellite communications.


Cable modems and digital subscriber lines: Qam is widely adopted in cable modems and digital subscriber line (dsl) technologies for high-speed internet access over coaxial cables and telephone lines, respectively.
5g and beyond wireless networks: With the increasing demand for higher data rates and spectral efficiency, advanced qam schemes with higher-order modulation and improved error correction techniques could play a crucial role in future wireless networks.


Optical communications: Qam can be extended to optical communications, enabling high-capacity data transmission over fiber-optic networks by modulating the amplitude and phase of optical carriers.


Quantum communications: Researchers are exploring the potential of qam in quantum communications, where the amplitude and phase of quantum states could be modulated to encode and transmit information securely.

 

Packing and Shipping of QAM Modulator

 

Packing

Wooden box

Shipping

Shipped by road, sea, rail

 

 

FAQ

 

 

Q: Hat does QAM stand for?

A: QAM stands for Quadrature Amplitude Modulation, a method of encoding data by varying a signal’s amplitude and phase.

Q: How does QAM improve data rates?

A: By combining amplitude and phase modulation, QAM can transmit more data per symbol compared to simpler methods.

Q: What’s the difference between 16-QAM and 256-QAM?

A: Uses 16 points in the constellation diagram, encoding 4 bits per symbol. Uses 256 points, encoding 8 bits per symbol, offering higher data rates but requiring better signal quality.

Q: Why is QAM used in Wi-Fi?

A: QAM enables higher data rates and efficient bandwidth usage, critical for modern Wi-Fi standards like 802.11ac and 802.11ax.

As one of the most professional qam modulator manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to wholesale high-grade qam modulator from our factory.

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