Digital predistortion without lookup tables (無線通信システム)
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概要
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Digital Pre-Distortion (DPD) algorithms are critical for lowering out-of-band interference in broadband base stations yet their cost-effective implementation is compromised by excessive approximations. We present a high-performance nonlinear moving-average power amplifier linearization technique that uses pure signal processing and needs no lookup table (LUT). Simulation results show that our algorithm provides better performance than LUT-based DPD methods and leads to smaller silicon implementations by reducing hardware complexity.
- 2009-01-15
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