Our advanced, state of the art technology is what sets our products way above the competition. Designed by a team of scientists, engineers and developers, our innovations are key to our success.
OFDM (Orthogonal Frequency Division Multiplexing) physical layer
OFDM is the most efficient radio physical layer for long-range, non-line of sight broadband wireless access.
OFDM uses orthogonally arranged multiple carriers to transmit data and achieves very high multipath resistance.
Our coded, 64-FFT OFDM implementation is designed on a single baseband ASIC (Application Specific Integrated Circuit)
and supports a raw data rate of 54 Mbps. Resilient to interference, multipath effects, fading and Doppler shifts, this
technology has been successfully tested and implemented in the harshest environments.
Adaptive Modulation and Coding technology
Adaptive Modulation is a smart, automated technique to maintain a radio link even through conditions that would cause
a regular wireless data link to fail (severe fading, multipath, interference, obstructions, etc.) When adverse radio conditions
occur, the Adaptive Modulation engine detects the signal degradation and automatically shifts down the modulation mode
to a lower-rate, but more tolerant modulation mode. Our AMOD engine supports eight different modulation and FEC
(Forward Error Correction) coding rates and automatically switches between them to maintain a reliable link.
Implemented in hardware, the AMOD engine can switch modulation modes independently between uplink and downlink
and between individual timeslots.
High power, multiband ultra-sensitive radio transceiver devices
Our radio units are all equipped with highly linear integrated transceivers that deliver the great performance demanded
from a multipoint access system. In any wireless system, one of the most important things to providing reliable coverage
is the radio link budget between base station and subscriber radio systems. Our systems achieve this with increased transmit
power (up to 700mW) and superior receive sensitivity without inefficient,
noisy external amplifier devices.
Smart MAC (Medium Access Control) Layer software
A very important aspect for operators is ability to put a large number of simultaneous users on their networks – a factor that
will directly influence their profitability. Many of our competitive systems are based on an inefficient multipoint access layer – the MAC.
This unorganized access works fine with small numbers of users connected – usually 20 and less. As more nodes join, the inefficiency of the protocol starts to show as network performance drops dramatically and in many cases, to unacceptable levels.
Our system features an advanced, token-passing scheduling MAC protocol which allows maximum simultaneous user connections – as
high as 512 per sector - without performance loss.
Ethernet-based networking model
Our systems operate as layer 2 Ethernet bridges. This allows maximum flexibility for the operators who may use various models
of access for their subscribers. With this transparent approach, this flexibility is made easy and simple. The bridging stack supports
advanced features such as VLAN tagging, QoS support, and network loop detection.
Advanced element management software
Broadband wireless networks do not differ much from their wired counterparts in the need for effective management,
while their geographical dispersion of nodes contributes to their complexity. To enable simple, centralized, and effective management we have developed an EMS (Element Management System) application suite which offers all tools necessary
to successfully and easily run a broadband wireless network. The EMS is a set of client/server GUI applications, featuring an
SQL database for storage of all data, management of elements (base station units, subscriber units, encryption keys, etc.),
comprehensive alert and event logging, drill-down performance reporting, and real-time monitoring. Client, server and database
applications all run on the standard Windows platform and thousands of elements can be supported by a single server. The
software is an entirely graphical, point and click interface with quick access to all features.
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