Freescale Semiconductor's newest QorIQ Qonverge SoC for fast-growing metrocell market incorporates digital front-end technology and supports up to 256 simultaneous users. Designed to help operators add capacity and deliver enhanced coverage in user-dense environments, the new B3421 base station SoC integrates digital front-end (DFE) technology, which improves power amplifier (PA) efficiency and significantly reduces base station power and costs.
The device’s embedded CPU cores, DSP cores, baseband accelerators and DFE technology deliver a system-on-chip solution that handles base station processing tasks from the front end all the way to the backhaul. The integrated DFE capability, coupled with industry-standard antenna interfaces, allow seamless RFIC interfacing and streamlined RF line-up optimization. Together with Power over Ethernet (PoE) capabilities to meet low power requirements, support for JESD204B, JESD207 and CPRI interfaces to support various antenna schemes, PCI Express for connectivity to WiFi chipsets, SATA for local content caching and Ethernet SGMII backhaul interfaces, the QorIQ Qonverge B3421 device is the most highly integrated metrocell base station SoC in the industry.
The B3421 device is fully optimized for concurrent LTE and WiFi operation, and supports LTE-TDD, LTE-FDD and LTE-Advanced wireless standards. Advanced 4×4 MiMO algorithms and 3GPP standard up to Release 11, advanced interference cancelling schemes, eICIC and carrier aggregation additionally improve spectral efficiency and provide future-proofing for OEMs and operators.
Operating in the in PoE-type power envelope, the B3421 SoC leverages field-proven, industry-leading acceleration technologies combined with Power Architecture® e6500 dual-thread cores and StarCore SC3900 DSP cores, which are both the industry’s highest performing cores in their respective categories. The result is exceptional raw performance that enables up to 256 simultaneous users, and outstanding spectral efficiency for extremely dense user bases like enterprise or urban environments.