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iBurst system

iBurst, a logical Choise

Those with first-hand experience using iBurst probably could not imagine going without it. The reason is that the iBurst Broadband Wireless System was designed from the ground up to deliver wide-area broadband access based on viable economics -- an industry first. iBurst utilizes the maximum potential in smart antenna technology to achieve superb base-station range and capacity. It uses TDD spectrum to maximize efficiency, and is designed around well-established data network architectures to integrate smoothly with existing Internet services. Kyocera has decided to commercialize iBurst technology and bring it to market, fulfilling operator requirements for world-class quality, support and scale.

Industry's Only Viable Economics

Range and coverage are the key elements in the early stages of a network's deployment. After a wireless broadband technology is accepted within the market , capacity rapidly becomes the key to success. The iBurst system's adaptive array antenna technology offers superior coverage and capacity , providing excellent initial network performance - including consistent 1 Mbps real-world user data transmission rates, quality coverage , and range comparable to cellular networks even in challenging urban environments. For a mature network unique spatial channel technology gives the iBurst system over three times greater capacity per operator dollar than the closest wireless alternative. iBurst costs are in line with cable or DSL , with full support for mobility. Operators around the world now realize that the ability to offer customers the freedom of wireless broadband today -- at the low cost of an iBurst network -- is a profitable business opportunity well worth exploring.

Adaptive Array Antenna

Adaptive Array Antenna technology is characterized by two main features. The first is concentrated signal output. The iBurst base station is able to detect the phase and amplitude of each antenna and user terminal , and then concentrate signal power to deliver a stronger signal to the subscriber unit. The second feature is being able to suppress the interference.



Adaptive Array Antenna technology allows the base station to detect any signal interference, then adjust the signal phase and amplitude to minimize any interference effect on the base station. Simultaneously, the base station can protect other terminals from interference by stopping any transmission to the terminal which is causing interference. These features together assure a more stable, higher-speed Internet access service over a wide coverage area.

SDMA

SDMA (Spatial Division Multiple Access) technology facilitates simultaneous multiple connections at the same frequency. SDMA (technology also derived from Adaptive Array Antenna technology) can be used by the base station to transmit to and receive signals from a maximum of three user terminals (A, B and C).



To eliminate mutual interference, phase and amplitude adjustments are performed between each antenna of the base station and each terminal. For example, for terminal A's connection, signal output to terminals B and C is suppressed. This makes more efficient use of frequencies and increases base station capacity as well.

Link Adaptation

Link Adaptation technology allows the ideal digital modulation to be selected depending up on signal quality at the base station or user terminal. The variable range is eight increments for uplink and nine for downlink. This technology allows high-speed modulation to be applied to strong signals. However, when signals get weaker, low-speed modulation is chosen to prevent dropped connections. This function enhances mobility as well.