Difference between revisions of "BNet"

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[[BNet]] is a collection of satellites, ground facilities, and research labs run by the [[Burawa]] government to provide low-cost and free internet through the use of [[wikipedia:high throughput satellite|high throughput satellites]]. Currently the system has two satellites orbiting Adonia. The satellites are capable of providing five million broadband users or 72 million mobile phone subscribers in Southern Kaftia. The system is currently available to citizens of Burawa and [[Kushish]] for a nominal fee (starting at 10$/gb/day), or free to the [[Nomadic Groups of Southwestern Kaftia|Nomads]] that roam the lands of [[Southwestern Kaftia]].
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'''BNet''' is a collection of satellites, ground facilities, and research labs run by the [[Burawa]] government to provide low-cost and free internet through the use of [[wikipedia:high throughput satellite|high throughput satellites]]. Currently the system has two satellites orbiting Adonia. The satellites are capable of providing five million broadband users or 72 million mobile phone subscribers in Southern Kaftia. The system is currently available to citizens of Burawa and [[Kushish]] for a nominal fee (starting at $10/gb/day), or free to the [[Nomadic Groups of Southwestern Kaftia|Nomads]] that roam the lands of [[Southwestern Kaftia]].
  
 
== Spacecraft and Technology ==
 
== Spacecraft and Technology ==
The first, TOGEER 1, was launched on July 5, 2008, with a mass of 7200 kg on a [[wikipedia:SSL 1300|YZK-1200]] series of spacecraft. The second, TOGEER 2, was launched on March 2, 2012 with a mass of 7600kg on the same series of spacecrft. Both satellites have a combined bandwidth capacity of 90 Gbit/s, enabling users on land to receive up to 10 MBps and download up to 15 MBPs for a variety of uses.
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The first, TOGEER 1, was launched on July 5, 2008, with a mass of 7200 kg on a [[wikipedia:SSL 1300|YZK-1200]] series of spacecraft. The second, TOGEER 2, was launched on March 2, 2012 with a mass of 7600 kg on the same series of spacecrft. Both satellites have a combined bandwidth capacity of 90 Gbit/s, enabling users on land to receive up to 10 MBps and download up to 15 MBPs for a variety of uses.
  
 
A wide-band data link from the gateway to the user terminal employs an Orthogonal Frequency Division Multiplexing (OFDM) with a Time Division Multiplex (TDM) overlay. These forward channels employ highly efficient transmission methods, including Turbo Product Code (TPC) and higher order modulation (L-codes) for increased system performance.
 
A wide-band data link from the gateway to the user terminal employs an Orthogonal Frequency Division Multiplexing (OFDM) with a Time Division Multiplex (TDM) overlay. These forward channels employ highly efficient transmission methods, including Turbo Product Code (TPC) and higher order modulation (L-codes) for increased system performance.

Latest revision as of 08:10, 24 October 2016

BNet is a collection of satellites, ground facilities, and research labs run by the Burawa government to provide low-cost and free internet through the use of high throughput satellites. Currently the system has two satellites orbiting Adonia. The satellites are capable of providing five million broadband users or 72 million mobile phone subscribers in Southern Kaftia. The system is currently available to citizens of Burawa and Kushish for a nominal fee (starting at $10/gb/day), or free to the Nomads that roam the lands of Southwestern Kaftia.

Spacecraft and Technology

The first, TOGEER 1, was launched on July 5, 2008, with a mass of 7200 kg on a YZK-1200 series of spacecraft. The second, TOGEER 2, was launched on March 2, 2012 with a mass of 7600 kg on the same series of spacecrft. Both satellites have a combined bandwidth capacity of 90 Gbit/s, enabling users on land to receive up to 10 MBps and download up to 15 MBPs for a variety of uses.

A wide-band data link from the gateway to the user terminal employs an Orthogonal Frequency Division Multiplexing (OFDM) with a Time Division Multiplex (TDM) overlay. These forward channels employ highly efficient transmission methods, including Turbo Product Code (TPC) and higher order modulation (L-codes) for increased system performance.

In the terminal-to-gateway direction (or return link), the narrow-band channels employ the same efficient transmission methods. These narrow-band channels operate in different multiple-access modes based on bandwidth-usage behavior, including ALOHA and TDMA for STAR return link waveform.

Traditional satellite technology utilizes a broad single beam to cover entire continents and regions. With the introduction of multiple narrowly focused spot beams and frequency reuse, TOGEER 1 and 2 are capable of maximizing the available frequency for transmissions. Increasing bandwidth by a factor of twenty compared to traditional Ku-band satellites translates into better efficiencies. Despite the higher costs associated with spot beam technology, the overall cost per circuit is considerably lower as compared to shaped beam technology.

TOGEER 1 and 2's Dynamic Power Allocation optimizes the use of power among beams and allocates a power reserve of 20 and 25 percent respectively to be allocated to beams that may be affected by rain fade, thus maintaining the link.