6G • RAN
Handset Reconfigurable DFE
Dynamic Software-Defined Digital Front-End for 6G Handsets
Flexible on-chip digital signal processing stage dynamically adapting filters, channelizers, and decimation rates across multi-generation carriers.
Technical Explanation
A 6G smartphone must handle radically diverse waveforms—from legacy 4G/5G sub-6GHz narrowband channels to 6G ultra-wideband sub-THz and OTFS delay-doppler modulation. The Reconfigurable Digital Front-End (DFE) features reconfigurable coarse-grained array architectures (CGRA) that dynamically reprogram Digital Up/Down Converters (DUC/DDC), sample rate converters, and digital pre-distortion (DPD) on a per-slot basis to optimize power consumption for the active service.
Key Functions
- Adapts filter bandwidths and decimation factors dynamically in microseconds
- Supports concurrent multi-carrier aggregation across legacy 5G and 6G bands
- Applies low-complexity digital pre-distortion to linearize handset power amplifiers
- Reduces silicon area by multiplexing DSP resources across heterogeneous waveforms
Specifications
3GPP Rel-19 Baseband Architecture, ITU-R M.2160
Interfaces
ADC/DAC InterfaceBaseband Modulator/Demodulator
Related 6G Concepts
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