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WiMAX will provide two forms of wireless service, mobile and fixed.
Mobile WiMAX uses the 802.16e standard:
This is similar to Wi-Fi in that you will connect to a WiMAX tower using a small antenna attached to or build into your device. In this mode WiMAX will use a frequency range which is similar to Wi-Fi. These transmissions are not as easily disrupted by physical obstructions and are better able to bend around obstacles.
Fixed WiMAX used the 802.16d standard:
This is where you will have a fixed antenna sitting in your home or office pointing toward a WiMAX tower. The line of sight connection will be stronger and more stable than a non line of sight connection so it will be able to send and receive more data, potentially with fwere errors. Line of sight transmission will use higher frequency providing for less interference and lots more bandwidth.
Wi-Fi versus WiMAX
WiMAX operates on the same principles as Wi-Fi. Data is sent from one computer to another via radio signals. A WiMAX-equipped computer, whether PC or laptop, will receive data from the WiMAX transmitting station, probably using encrypted data keys to prevent unauthorized users from stealing access.
Both Wi-Fi and WiMAX deliver high-speed Internet.
That's just the beginning: WiMAX outdistances Wi-Fi by miles. Wi-Fi is for local access; WiMAX is for city-wide access.
Image the freedom you will have: To get anything you want, when you want it, while connected to a WiMAX network.
That's the power of WiMAX.
4G XOHM mobile broadband standards are based on FDM, OFDM, or OFDMA technologies (Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiple Access).
It may be helpful to compare the standards in this way:
FDM can be compared to a country highway that is capable of carrying very light traffic in both directions.
OFDM can be compared to a 4-lane highway that is capable of carrying a greater amount of traffic in both directions.
OFDMA can be compared to an 8-lane highway that is capable of carrying a maximum amount of traffic in many different directions.
XOHM (using WiMAX) makes full use of the OFDMA standard. This means it will accommodate more traffic, uploading and downloading more data than FDM and OFDM.
The bottom line -- because XOHM has more spectrum than its competitors, it can take full advantage of the WiMAX technology.
MIMO Antenna Technology
A key feature of WiMAX as deployed by XOHM is the use of advanced Antenna Systems (AAS) such as MIMO.
MIMO is an acronym for Multiple Input Multiple Output antenna reception and transmission. It is the only advanced antenna technology that simultaneously offers high bandwidth, improved range, and high mobility at a low relative cost.
Key features of MIMO include:
Improved reliability at cell edge and extended range
Improved indoor penetration
Improved range and reduced interference
MIMO is the basis for Mobile WiMAX, 802.16e, LTE and UMB (Ultra Mobile Broadband).
Mobile WiMAX will be first to market to fully utilize MIMO as part of the Wave II compliance (as defined by the WiMAX Forum).
MIMO Related Applications
Applications that are possible because of WiMAX and MIMO technology:
Mobile video downloads and uploads
Mobile streaming video
Mobile music downloads
Mobile video conferencing
Mobile interactive gaming
Moving Through a WiMAX Network
WiMAX technology is designed to allow mobile users to move through the network seamlessly.
Even though the data rate will change as a user moves around the cell or further away from the tower, the next or adjacent tower will connect with the user and assure that the signal will be clear and pure.
The WiMAX/XOHM Scenario
Here's what will happen when you have WiMAX by XOHM.
XOHM will set up a base station somewhere near your home, your office, the park around the block, etc. You purchase a WiMAX enabled computer or laptop, or upgrade your old computer or laptop by installing a WiMAX modem or card. In the near future you will also have the opportunity to purchase a variety of new devices that will come with embedded WiMAX chips.
When you turn on your WiMAX-equipped device for the first time, it will locate the XOHM WiMAX network and invite you to sign up for service and connect to XOHM for a very reasonable fee, by the day of month. It will be your choice.