Comba Introduces Remote Radio Unit for WiMAX Networks
Comba Telecom System, a wireless enhancement solutions provider, has
introduced its new WiMAX-compatible remote radio unit (RRU) to the
global market. It aims to enable rapid WiMAX network deployment.
The RRU
is an integrated base station RF unit, which can be detached from the
BBU (Base Band Unit) and fed with baseband signals through optical
fiber. Its design and configuration will reduce CAPEX and improve
deployment time for WiMAX network rollout, says the company.
A key
feature of Comba's RRU is that it is designed for easy customization for
different BBU suppliers in order to expedite integration. The RRU
supports point-to-point, star and daisy-chained connection with the BBU
to provide a flexible system topology, informs the company.
In
addition, its compact, IP65 weatherproof and convection cooling design
allows it to operate in various environments from tower tops to
underground tunnels. These design features minimize the feeder cable
requirements for base station systems and mitigates the challenges
network operators face in site acquisition and power supply issues, says
Comba.
"The
RRU addresses two very important issues of the WiMAX space: speed to
market and cost effectiveness," says John Cheng, Comba's director of
Product Marketing, Wireless Enhancement. "Comba is actively researching
and developing products for current and developing standards such as
UMTS, WiMAX and LTE. The WiMAX RRU is the latest addition to Comba's RRU
technology, which includes solutions for WCDMA, CDMA2000 and TD- SCDMA."
Key
WiMAX RRU specifications:
- Digital optical interface
compliance with OBSAI RP3-01 v4.0 or CPRI v3.0
- Customizable for third
party BBUs (Base Band Units)
- Operates in 2.3-2.7GHz
supporting variable channel bandwidths
- RF performance exceeds
specifications defined in the "WiMAX Forum System Profile"
- Independent RF channels (TRx)
support various multi-antenna architecture: 2x2 MIMO, 4x4 MIMO, 4x4
AAS
- SDR (software defined
radio) enables key parameters to be software configurable (central
frequency, channel bandwidth, output power, TDD ratio)
- Support flexible system
topology: point-to-point, star and daisy-chain
- Built-in self-diagnostic,
protection, alarm & error report functions
- Compact size with minimal
footprint facilitates rapid deployment
Comba
has its corporate headquarters in Hong Kong and listed on the Hong Kong
Stock Exchange in 2003.
