Most Advanced parts of the technology development

Satellite Downlink Services: The satellite downlink services work exactly opposite

to the satellite uplink services, where the frequency signals are sent from the satellite, unlike satellite uplink services where the frequency signals are sent to the satellite. The satellite downlink services get the signals from the satellite, which is received by a dish down on Earth, which are further converted into the compatible frequencies and further to the digital signals. These signals are then used by the electronic gadget for which the signals are being sent.

Satellite uplink and downlink services are mostly useful for the people who stay in the remote areas, away from the town or city areas. With the wireless technology, it becomes much easier for the people staying in the remote areas to get the mode of communication easily.

satellite uplink and downlink services are provided to the people at large, the cost of production goes down and these services become much cheaper than the other communication and entertainment services. And thus, become more affordable for the people at large.

There are a huge variety of satellite services, but how satellites transmit the single through channel it important to understand. There are quite a series of satellite services that are available, which can be used using different gadgets like televisions, radios, computers, laptops and so forth.

Satellite services are one of the most advanced parts of the technology development that have made the lifestyle of the people very advanced too. With the satellite services, the people have been facilitated to get more advanced services wherein they can know the happenings of even the other parts of the world just by sitting at home.

Satellite broadcast is an important candidate for large-scale multimedia information distribution due to the inherent wide-range multicasting capability of satellites and the asymmetry of satellite communications (high bandwidth downlink, limited bandwidth uplink) that matches nicely the information flow asymmetry in multimedia applications. We consider a data broadcasting model that is encountered in most asymmetric satellite communication environments. The problem of scheduling the data broadcast such that average response time experienced by the users is low is considered. In a push-based system, where the users cannot place requests directly to the server and the broadcast schedule should be determined based solely on the access probabilities, we formulate a deterministic dynamic optimization problem, the solution of which provides the optimal broadcast schedule.

Properties of the optimal solution are obtained and then we propose a suboptimal dynamic policy which achieves average response time close to the lower bound. In a pull-based system where the users may place requests about information items directly to the server, the scheduling can be based on the number of pending requests for each item.

Most Advanced parts of the technology development

By: ajay baretha

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