Flexible and Scalable Solution Enables Rapid WiMAX Network Deployment

Comba Telecom Systems Holdings Limited (“Comba” or the “Group”, HKEx: 2342), a leading wireless enhancement solutions provider, officially introduced its new WiMAX-compatible remote radio unit (RRU) to the global market. The RRU is a highly integrated base station RF unit which can be detached from the BBU (Base Band Unit) and fed with baseband signals through optical fiber. Its high power efficiency design and flexible configuration dramatically reduces CAPEX and improves deployment time for WiMAX network rollout.

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.

In addition, it’s compact, IP65 weatherproof and convection cooling design allows it to operate in various environments from tower tops to underground tunnels. These flexible and scalable design features minimizes the feeder cable requirements for base station systems and mitigates the challenges network operators face in site acquisition and power supply issues.

Mr. John Cheng, Comba’s Director of Product Marketing, Wireless Enhancement, said “We are pleased to bring this latest innovation to the market. The RRU addresses two very important issues of the WiMAX space: speed to market and cost effectiveness.”

Cheng further added “We are committed to helping our business partners and customers to realize effective returns on their network investments. 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: 2×2 MIMO, 4×4 MIMO, 4×4 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

Source: Comba Telecom Systems Holdings Limited

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