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BROADBAND

BROADBAND. Presented by, Yusmi Zunira bt Mohamad Yunus 2006665642. WHAT IS. Broadband in general electronics and telecommunications is a term which refers to a signal or circuit which includes or handles a relatively wide range of frequencies .

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BROADBAND

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  1. BROADBAND Presented by, Yusmi Zunira bt Mohamad Yunus 2006665642

  2. WHAT IS Broadband in general electronics and telecommunications is a term which refers to a signal or circuit which includes or handles a relatively wide range of frequencies. Broadband is a blanket term for a range of technologies that allow access to the internet at much higher speeds than normal dial-up connections. Broadband channels can carry video,voiceand data simultaneously

  3. CONTENT Introduction Application Technology Implementation Advantages /Disadvantages Conclusion

  4. INTRODUCTION Broadband Internet access, often shortened to "broadband Internet" or just "broadband", is a high data-transmission rate internet connection DSL and cable modem, both popular consumer broadband technologies, are typically capable of transmitting 256 kilobits per second or more, starting at approximately four times the speed of a modem using a standard digital telephone line Internet - Broadband: 110,000 (2003) In 2004, 0.85% of Malaysians using it (218,004). The government targets a figure of 5% by 2006 and 10% by 2008.

  5. APPLICATION TELEPHONE RADIO BROADBAND APPLICATION BANDWIDTH CAP RECEIVER

  6. TECHNOLOGY Satellite Internet Remote DSL DSL repeater Power-Line Internet Wireless ISP T-1/DS-1 Source:

  7. Satellite Internet Among the most expensive ways of gaining broadband Internet access, but in rural areas it is often the only viable option. Satellite Internet also has a high latency problem caused by the signal having to travel 35,000 km (22,000 miles) out into space to the satellite and back to Earth again. Satellite Internet services are used in locations where terrestrial Internet access is not available and in locations which move frequently. Internet access via satellite is available worldwide, including vessels at sea. There are three types of satellite Internet service: one-way multicast, one-way with terrestrial return, and two-way satellite access.

  8. DSL (Digital Subscriber Lines) Broadband Access for Consumers is either through DSL (Digital Subscriber Lines) or via cable modem. DSL is a technology for bringing high-speed and high-bandwidth, which is directly proportional to the amount of data transmitted or received per unit time With DSL, consumers and businesses take advantage of having a dedicated, always-on connection to the Internet. There are currently at least six different types of DSL. Asymmetric Digital Subscriber Line (ADSL), Symmetric Digital Subscriber Line (SDSL), ISDN Digital Subscriber Line (IDSL), High-bit-rate Digital Subscriber Line (HDSL), Very high-bit-rate Digital Subscriber Line (VDSL), and Rate-Adaptive Digital Subscriber Line (RADSL). Each one has different technical ranges, capabilities, and limitations.

  9. How Its Work ?(cont’d) Source:

  10. Cable Modem Cable modems are primarily used to deliver broadband Internet access, taking advantage of unused bandwidth on a cable television network.Cable modems (CM) are designed to operate over cable TV lines to provide high-speed access to the Web or corporate Intranets. There are three types of CM: external modem, internal modem, and interactive set-top cable box. A number of different cable modem configurations are possible. Over time more systems will arrive. With the advent of Voice over IP telephony, cable modems can also be used to provide telephone service.

  11. How Its Work ?

  12. DSL Repeater This is a very new technology which allow DSL to travel longer distances to remote customers. One version of the repeater is installed at approximately 3 km (10,000 ft) intervals along the trunk line, and strengthens and cleans up the DSL signal so it can travel another 3 km (10,000 ft). Power-Line Internet This is a new service still in its infancy that may eventually permit broadband Internet data to travel down standard high-voltage power lines. Broadband over power lines (BPL), also known as Power line communication, has developed faster in Europe than in the US Nearly all large power grids transmit power at high voltages in order to reduce transmission losses, then near the customer use step-down transformers to reduce the voltage.

  13. Wireless ISP Wi-Fi radio systems to link up remote locations over great distances, but can use other higher-power radio communications systems as well. Service spanning only 100-150 metres (300-500 ft). By focusing the signal down to a narrow beam with a yagi antenna it can instead operate reliably over a distance of many miles. Rural Wireless-ISP installations are typically not commercial in nature and are instead a patchwork of systems built up by hobbyists mounting antennas on radio masts and towers, agricultural storage silos, very tall trees, or whatever other tall objects are available.

  14. IMPLEMENTATION Digital Subscriber Line (DSL), digital data transmission over the wires used in the local loop of a telephone network Local Multipoint Distribution Service, broadband wireless access technology that uses microwave signals operating between the 26GHz and 29GHz bands WiMAX, a standards-based wireless technology that provides high-throughput broadband connections over long distances Power line communication, wireline technology using the current electricity networks Satellite Internet access Cable modem, designed to modulate a data signal over cable television infrastructure Fiber to the premises, based on fiber-optic cables and associated optical electronics High-Speed Downlink Packet Access (HSPDA), a new mobile telephony protocol, sometimes referred to as a 3.5G (or "3½G") technology Evolution-Data Optimized (EVDO), is a wireless radio broadband data standard adopted by many CDMA mobile phone service providers

  15. ADVANTAGES Fixed-costs (unmetered access to the Internet, so no nasty surprises when the telephone bill comes in - eg. if using ISDN) High speed Internet access compared to dialup alternatives (up to 10 times faster) Permanent "always-on" connection, so no waiting for dialup to your Internet provider or enduring dropped line problems Faster webpage access, file downloads and instant delivery of email Frees up telephone line for voice/fax (important for small businesses when trying to keep costs down)

  16. DISADVANTAGES Since the neighborhood is essentially a LAN, a neighbor could exploit your file and print sharing permissions to take control of your PC. For an “Always-On” computer on the Internet, it always opens for all those malicious codes, which may coming from anywhere: emails, web visits, instand messages.

  17. CONCLUSION Broadband refers to telecommunication that provides multiple channels of data over a single communications medium, typically using some form of frequency or wave division multiplexing. As a vehicles that allow the delivery of entirely new breed of media services and communications application

  18. -End of session- Thank you

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