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ServicesRF DesignDIGITAL FRONT END (DFE)

DIGITAL FRONT END (DFE)

Azcom Technology has 20 years’ experience in design and development of DFE in RF Systems. This includes digital up-conversion (DUC), digital down-conversion (DDC), digital pre-distortion (DPD), DC-offset calibration, crest factor reduction (CFR), pulse-shaping, delay/gain/imbalance compensation, noise-shaping, numerically controlled oscillator (NCO), and conversion between the analog and digital domains.

These digital processing technologies offer a number of advantages in power efficiency, cost reduction, time-to-market, and flexibility for software defined radio (SDR), supporting multiple standards and multi-mode applications.

DIGITAL FRONT END (DFE)
Major Project Experience

  • Digital front end implementation for WiMAX and LTE (5, 10 and 20 MHz) channel bandwidths
  • High performance large band complete digital pre-distortion algorithm for PA linearization
  • Complete WCDMA Up/Down conversion chains for multi – carrier/multi-standard/multi-antenna RF cards (interpolators, decimators, shaping filters, CFR, NCO)
  • Flexible CPRI antenna I/F

RF Competence Summary
TX/RX digital chains development on FPGA

  • Digital Up/Down conversion
  • Shape/RRC filters
  • Interpolators/Decimators
  • Digital Crest Factor Reduction
  • Numerical oscillators
  • A/D and D/A interfaces for discrete RF solution and latest generation integrated transceiver RF solutions
  • CPRI
  • O&M over CPRI
  • Digital Pre-distortion algorithm
  • Development of µP control and O&M SW
  • Design of other RRH algorithms:
  • RX/TX AGC
  • RF chain thermal compensation

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