The new RRHs operate over the 1.85GHz – 2.62GHz E-UTRA frequency bands, for either TDD or FDD modulation formats, with models for E-UTRA bands 38 and 40 available for immediate OEM deployment. The units are based on the same innovative design platform as the company’s WiMAX RRH, which is already being manufactured and shipped in volume worldwide.
The units can be customized to meet the specific interface and packaging requirements of the OEM, including the option of OBSAI RP3-01 or CPRI digital baseband interfaces or custom OEM fiber interfaces. Designing basestations using a distributed RRH approach minimises the environmental impact of the basestation and considerably reduces both CAPEX and OPEX of the overall system, due to their significantly lower energy consumption and maintenance costs. Using RRHs also accelerates time-to-deployment, as well as giving maximum scalability and flexibility for LTE network deployments. Flexibility, reliability, coverage and capacity are all maximized by the use of RRHs.
The RRHs can operate with 2-channel MIMO for HSPA+/LTE, and they are also capable of 4-channel MIMO operation if two daisy-chained units are used. They feature field programmable LTE channel bandwidths from 1.4MHz to 20MHz, and control and alarm management with AxisOS O&M.
“Axis WiMAX RRHs have already been very successful in reducing deployment costs and speeding rollout of WiMAX networks,” commented Michel Vieuxmaire, sales director of AxisNT. “These new units offer the same benefits to OEMs developing networks that will scale from HSPA+ to full LTE functionality, with the advantage that the RRHs can be customised to their own mechanical and interface requirements.”
The company’s new multi-carrier RRHs feature: automatic calibration for transmit, receive and PA bias control loops; OBSAI RP3-01 and CPRI V2 digital baseband interfaces with one or two optical connectors; very high reliability including an advanced failure mode prediction capability, as well as inherent fiber and RF redundancy.
For full deployment flexibility, carriers can be placed anywhere within the full 20MHz bandwidth supported by the AxisNT RRH, including non-contiguous carrier placement,
Support for adaptive antenna systems (AAS) and AISG v2.0 antenna control is provided, and the unit features a compact, lightweight modular design in a die-cast enclosure, with solar shield for outdoor use.
