User's Manual

PureWave Quantum base stations employ up to 6 transmitters and 6 receivers (depending
upon the specific model) that work together to achieve unprecedented results in terms of its
ability to connect to subscriber devices at greater distances and higher throughputs.
All PureWave Quantum Base Stations utilize the IEEE 802.16e Mobile WiMAX standard for
wireless communication with subscriber devices. Mobile WiMAX supports time division duplex
(TDD) communication between a base station and multiple subscriber devices on a given
channel of spectrum. In a WiMAX system the direction from base station to subscriber station
is known as the Downlink (DL) and the direction from subscriber station to base station is
known as the Uplink (UL). The ratio of time devoted to the DL to that of the UL is referred to as
the DL:UL Ratio.
WiMAX base stations utilize GPS (the Global Positioning System) to maintain tight
synchronization and coordination among themselves in a network. This assures that all base
stations in the network transmit and receive in harmony, as they must all utilize the same DL:UL
Ratio.
All PureWave Quantum Base Stations incorporate an integrated GPS receiver which must be
connected to an external GPS antenna in view of a number of GPS satellites.
The PureWave Quantum family of products is mobile WiMAX (802.16e) Profile C compliant and
offers models that cover frequency bands from 2.3-2.7GHz and 3.3-3.8GHz. Products are
available also in a Stand-Alone mode and can be operated without an Access Service Network
Gateway (ASN-GW) to further reduce network costs. By maintaining strict compliance with the
standards, PureWave Quantum base stations allow the maximum compatibility with a wide
variety of 3
rd
party network elements.
2.4.1.2 RAN – Subscriber Devices
A large variety of WiMAX subscriber devices are available today, including outdoor-mounted
CPEs, indoor desktop units (IDUs), USB dongles, and mobile handsets. Some devices have built-
in VoIP-based POTS (“plain old telephone service”) ports, and some even have built-in WiFi
access points.
We strongly recommend that operators select subscriber devices from PureWave’s catalog of
recommended devices. That is the best way to assure compatibility and the highest possible
performance.
Warning: When choosing a GPS antenna, choose carefully, as there are many
models in the market. Some are very cheap but also low gain and/or low
quality and can easily become the point of failure of your system. PureWave
recommends a high-quality GPS antenna from our product catalog.
!