SAN FRANCISCOLattice Semiconductor Corp. and networking and telecommunications solutions provider Affarii Technologies Ltd. said this week they have developed a complete 3G/4G-based Remote Radio Head (RRH) solution for wireless infrastructure customers.
According to the companies, this marks the first time a full RRH solution has been made available using low-power, low-cost FPGAs. Near antenna logic for MIMO-based RRH systems has traditionally been implemented in high-end, premium FPGAs.
The combination of the LatticeECP3 FPGA and Affarii's digitalTRX technology provides an RRH solution that includes digital up/down converter , crest factor reduction and digital pre-distortion functionality, the companies said. Lattice (Hillsboro, Ore.) also provides CPRI/OBSAI and Ethernet technology implemented on the ECP3 FPGA's low cost 3G serdes transceivers, the company said.
The integrated RRH solution provides baseband processing for up to two transmit and four receive antennas on a single silicon device, with each antenna supporting four carriers and 20MHz of modulation bandwidth, Lattice said. When used with industry-standard Doherty amplifiers, the digital predistortion provides up to 30dB of ACLR correction per transmit antenna with PA output efficiencies exceeding 40 percent, according to the company. The solution is fully customizable and suited for end applications including WCDMA, LTE, WiMAX, WiBro, TD-SCDMA and DVB-T/S/H, Lattice said.
The RRH solution is also supported by a development and test environment that includes GUI-based design simulation, performance analysis and a production test API with design examples, Lattice said. An in-circuit hardware development platform is also being developed, the company said.
The RRH solution is available for demonstration by arrangement with Affarii, the companies said. Product evaluation kits and development tools will be available in the first quarter of 2010, they said. More information about the RRH solution is available on Lattice's web site.