WiMAX: Technology Telecommunications Future

How Wimax Network Working "a sharing of information", the information can be collected about the future of technology: WiMAX (Worldwide Interoperability for Microwave Access) also known as the Wireless MAN, we write in the context of sharing knowledge.

Did you know? that this technology has been tested in-use, for Although we generally are still many who have not yet know what it WiMax. Did you know? Technology that this (pre WiMax) Nangro been implemented in Aceh by the Foundation Airputih on 40 points, early in 2005 to help the tsunami disaster management communication.

This technology, said the Future of Technology, (for some of us, that we did not know about this information is new) because the best technology of WiFi technology and is the embryo of Technology Telecommunication future that aligns with the fourth generation (4G and 5G). However, this technology has been developed from June 2001 using the IEEE 802.16 standards.

We have felt the ease of communication in the cellular (HP joyful learner) whenever and wherever (red: "Our network reach to remote corners of-district"; quoted from the ad one cellular operator india). Have you ever imagine we can ber INTERNET Ria When and where? You do not have a Lesbian NgeNET dikoridor blocks (even with the good of the Department establish Tower WiFi you can Ngenet at Cafe Adam), but if the Network Wireless MAN / Wimax while you can Lesbian NgeNet where, for example, the location Camping (red: Acid Island). Wimax Access Facilities

Why so? WiMax using the 802.16e standard has the ability handover or handoff, as shows on mobile communications By using WiMax, only needed a BTS with a distance of 30-50 km range, which means that for the whole city of Padang is only needed 1 BTS (1 pcs Tower) .

Speed data transfer can also theoretically be done with the speed of 70 Mbps, far above the speed of Wi-Fi, which "only" 11-54 Mbps. For Indonesia, the current frekueensi WiMax is still waiting for the frequency of the tender process undertaken by the government.

If the technology is implemented to Jardiknas. We can imagine, dream to connect all schools in the Republic of Indonesia, for both rural and urban areas can be met with both (yes can become a developed country dunk! ... This beloved republic).

Any country that has been in the Wimax technology? Currently, the country-country teleh use Wimax technology in the frequency spectrum is below the 3.6 Ghz including Singapore, Finland, Mexico, Brazil and Canada and Indonesia in the test in NAD. And we wait for the implementation of the results of research and LIPI ITB has been funded by the State Budget, pengumumannya this year, 2008 (Directorate General of Post of the information; Gatot S. Dewa Oh, The Joys,).

Unlike 802.11 (WiFi), WiMax is designed specifically to the outdoor environment. This is manifest in various ways WiMax. One of them, WiMax has various requirements on the physical layer for optimizing symbol rate. This standardization NircableHal make WiMax is slowly emerging. Furthermore, WiMax is not the MAC protocol issues, such as CSMA. Most importantly, WiMax can mendeliver QOS reliable and placement services per client, which is very important for the communication distance.

Papaparan above, give us facts to bawha WiFi is the right step to be used in enduser, so that WiFi and WiMax will each fill out one another. WiMax to fill the needs of the outdoor network access without cables, while more likely to WiFi network indoors without cable.

Why WiMax Very Interesting? WiMax is able to meet the needs of various business affairs with the speed T1/E1 connectivity and support the needs of the home with DSL connectivity in unison, That is a low cost and high flexibility in the use of the building, the expansion in the addition of channels and base station can be carried out gradually in accordance with the growth of Demand , Support of voice and data communications, semiconductor Vendor predict, WiMax chips will begin to appear on the PC in 2006 and the PDA in 2007.

How do I ... miles? WiMAX technology that was developed in June 2001 using the IEEE 802.16 standards. Wimax standard originally designed utuk frequency range from 10 to 66 GHz 802.16a, updated in 2004 to 802.16-2004 (also known as the 802.16d) increase the frequency range of 2 to 11 GHz in the specification. Also known as the 802.16d fixed WiMax, 802.16e be renewed again in 2005 (known as Mobile WiMAX) and using orthogonal frequensy-divion multiplexing (OFDM), which has more stability than the 802.16d standard that uses OFDM 256 sub-Carriers. The use of OFDM that this new benefit in terms of coverage, installation, power consumption, the use of the frequency and efficiency of the frequency of the tape.

In General, (quote from helfin based on Wimax in Computer Science dot com) Wimax consists of two parts, namely Base Station Receiver Wimax and Wimax or also called customer premise equipment (CPE).

Wimax Base Station consists of indoor and electronic Wimax tower. Generally, a base-station to reach a radius of 6 Mile (in theory can menjangkai up to a radius of 50 km or 30 Mile, but according to a new limited practice, around 10 km or 6 Mile. In the service area is anywhere can access the wireless Internet. WimaxBase Base Station Station Wimax using the MAC layer (defined in the standard), a common interface that make the network interoperable and can allocate uplink and bandwdith Downlink to customers based on the unit needs a certain time. Each base station to reach the area called cel. Maximum radius of the cell theory is 50 km (depending on the chosen frequency band), but the development is the common radius of 3 km to 10 km. As the mobile cellular network, the base station antenna can be omnidirectional (a circular cell) or directional (linear) and / or sectoral.

WiMAX Receiver can consist of a separate antenna (part of a separate Receiver between electronic and antenna) or can form their own box or PCMCIA card in a laptop. Access to the base station Wimax almost the same as the access point to access the WiFi network, but still the high cost of installation CPE into obstacles because the need experts in the installation system for the BWA CPE.

Backhaul more to the point of connection from the access provider and connect to the network provider to the core.

WiMAX technology has been using high frequency. Optimization Wimax is located on the type of transmitter (antenna beam) and the location of use (walls, buildings high). In addition, the HF transmitter done with beam shaping system. Standards WIMaxJadi, starting 802.16a standard, all the antenna on a base station connected to each other can adjust the beam Characteristic of the reach and bandwidth. Transmission technology, any of the new. Modulation signal carrier conducted through Parallel modulation Orthogonal Frequency division multiplexing (OFDM).

Currently, producers have been producing device Wimax is Alvarion, Airspan Inc. and Alpha Networks Inc.. (production Alpha Network Inc. is Wimax CPE for indoor / outdoor WiFi and Wimax Access Point).

Next Generation to HyperMAN or WiBRO (Wireless Broadband technology developed by the telecommunications industry of Korea) and the Generation Mobile-Fi standard IEEE 802.20.