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Small Cell Baseband Solution

The Zynq™-7000 All Programmable SoC devices are well suited for designing small cell base stations ranging from femtocell to metrocell. The on-chip dual ARM® Cortex™-A9 processors address the real-time processing tasks: one Cortex-A9 manages Layer 1 control, DDP coefficient calculation and the RTOS while the other Cortex-A9 runs part or all of the higher-layer functions.

The FPGA fabric can be used to accelerate Layer 2 functions, thus offloading the ARM processors to provide designers with more flexible acceleration options. On-chip logic enables the integration of DFE functions (DUC/DDC, CFR and DPD IP), which contributes to further reduction in power consumption while reducing end-to-end latency. The integrated PCIe connectivity enables seamless integration of Wi-Fi for data offloading.

Solution Summary and Benefits

  • Scalable and flexible modem
  • Complete baseband IP and solution
  • Higher system performance
  • 35% lower power than alternative implementations
  • Enables a 2x2, 20MHz modem that can support 32 to 64 users
  • Zynq SoCs can support this design using 70% of the on-chip logic, 60% of the DSP capacity, and 85% of the on-chip BRAM
  • Achieves 150Mbps downlink and 75Mbps uplink throughput performance

SmartCORE Solutions


  • LTE Turbo, MIMO and Channel Encoders and Decoders
  • LTE Channel Estimator
  • LTE PUCCH Receiver
  • LTE RACH Detector

 Reference Designs

  • Zynq Z7045 pre-integratable with Xilinx SmartCORE™ LTE IPs and  LTE L2/L3 stacks

Hardware Platforms

Boards and Kits

  • Zynq-7000 ZC706 Evaluation Kit

Programmable Logic Functions

  • L1 baseband processing
  • Digital radio front end (DUC, DDC, CFR, DPD)
  • Gigabit Ethernet backhaul management
  • Timing and synchronization e.g. IEEE1588v2
  • Hardware acceleration for higher layer functionality such as IPSec, Air Interface Ciphering, RoHC

Processor Sub-System Functions

  • L2/L3 protocol stacks
  • Backhaul stack
  • OA&M
  • Control for radio and timing
  • Custom applications such as RRM, SON
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