Abstract
Since the satellite communication goes in the trend of high-frequency and fast speed, the coefficients updahng and the precision of the traditional pre-distortion feedback methods need to be further improved. On this basis, this paper proposes dual 1oop feedback pre-distortion, which uses two first-order Volterra filter models to reduce the computing complexity and a dynamic error adjustment model to construct a revised feedback to ensure a better pre-distortion performance. The computation complexity, iterative convergence speed and precision of the proposed method are theoretically analyzed. Simulation results show that this dual loop feedback pre-distortion can speed the updating of coefficients and ensure the linearity of the amplifier output.
Original language | English |
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Article number | 6587330 |
Pages (from-to) | 586-591 |
Number of pages | 6 |
Journal | Journal of Systems Engineering and Electronics |
Volume | 24 |
Issue number | 4 |
DOIs | |
State | Published - Jun 2013 |
Keywords
- Dual loop feedback
- Mean square error
- Pre-distortion
- Satellite communication
- Volterra filter