Cable TV is a system that provides television programs to consumers via radio frequency signals (RF), transmits optical pulses on coaxial cables, or, in recent systems, fiber optic cables. These Cable Televisions are widely use where smart TV are not accessible.
This contrasts sharply with broadcasting (also known as terrestrial TELEVISION), where radio signals are transmitted via radio waves and received by television antennas connected to television; or satellite TV, where television signals are transmitted by radio waves from communications satellites orbiting the Earth by radio waves and satellite antennas on the roof.
Cable networks have only started operating as video service providers, but have moved to internet access with new technological advances. It is also a system that uses a transmission device to transmit television signals. – All kinds of cable networks are like this.
- Traditional Wired Networks
- Hybrid coaxial fiber network
Traditional wired networks:
The network began distributing broadcast video signals to places where information was poor or inaccessible. Traditional cable networks, also known as community antenna TVs, are located on the top floor of a building and are used to receive signals from television stations and then distribute them to the community via coaxial cables.
Here the cable office is called the main end, which can receive video signals from radio stations and then insert the signal into a coaxial cable. As the signal increases and the signal weakens, amplifiers are install on this network to rebuild the signal.
In this network, we have more than 35 amplifiers between the main end and the user’s default. At the other end of the cable network, the splitter is place on the split signal, touches, and places the cable attached to the user’s location.
Communication on this network is one-way. The image signal is transmit from the original end to the user’s location downstream.
Hybrid coaxial fiber network:
Hybrid fiber-centric networks are second-generation wired networks. The combination of fiber optic and coaxial cables is use in this type of network. The transmission mode used is the fiber node, the fiber mode.
Regional Cable Supervisor Service (RCH) has nearly 400,000 subscribers. After sending these signals to the fiber optic node via a fiber optic cable, the signals are modulate and degraded through the distribution center.
The fiber node divides the analog signal to send the same signal to each coaxial cable. About 10 subscribers are serve via coaxial cables. This connection goes both ways.
Cable TV is also Used to Access Internet
Cable networks can used to connect computers or local networks to the Internet, direct competition with DSL (Digital Shared Line) technology. In this tutorial, we will show you how this connection works.
This type of network is classify as HFC (coaxial hybrid fiber) because it uses fiber and coaxial cables.
Connections between cable companies and distribution points, also known as optical nodes, are made via fiber and can be up to 25 miles (40 kilometers) away, while connections between optical nodes and the user’s home are made using Coaxial cables.
Each optical node typically serves between 500 and 20 customers. In a coaxial network, amplifiers can use to reconstruct the signal and extend the maximum length of the coaxial network.
Because of this configuration, cable networks do not bother conventional DSL systems, especially ADLS systems, because they use traditional telephone cables due to cable quality, cable length, or electromagnetic interference (EMI).
The most commonly used system for cable companies to provide internet access is DOCSIS (Wired Service Interface Punctuation Data). Currently four versions of docsis are available: 1.0, 1.1., 2.0, and 3.0. Versions 1.0 and 1.1 are the same, but version 1.1 accepts the Service Quality Parameter (QoS), which allows the use of cable networks, for the phone (also known as VoIP). Therefore, we only need to contact versions 1.0 and 1.1 to allow channel joining for version 1.x. version 3.0.
The Cable TV Industry Is Dying
Cable TV began losing subscribers in 2013 and expanded in 2014. In fact, TV ratings dropped about 10% quarter-on-quarter, according to Nielsen ratings. There are several reasons for this dilemma.
- New competitors have emerged challenging traditional systems. Netflix, Inc. (NFLX), Amazon.com Corporation (AMZN), Sling TV, Crack and Sony Corp. (SNE) offer streaming content, replacing the set-top box/TV combination as the only way to watch entertainment.
Of both households in the United States and Canada, a Netflix subscription household has a total number of subscribers in North America and globally of more than 67 million and the number of users worldwide to more than 100 million, or about 12 billion hours of streaming content in 2019, Netflix reported.
- Consumers are no longer willing to pay for a large number of channels they do not see. This outdated cable model is made more targeted by streaming options that are only what you want to see, and even consumers who are still using cables order smaller packages.
- Media companies with more looking after content, such as ESPN or HBO, have recognized changes in consumer behavior and began trying to deliver their own streaming content.
- The cost of traditional mobile cable subscriptions has grown so much that consumers are no longer willing to pay and give all cable services. Between 1995 and 2005, cable bills grew three times faster than inflation, a very unsustainable trend.
- Today, Americans are more connected, preferring the convenience and convenience of switching between devices like laptops, mobile phones, and wearables that are affordable for broadband and wireless connectivity. Data support this transition.
According to Nielsen, the proportion of broadband-only households tripled between 2014 and 2018.