Linearization device and linearization method in broad-band communication system
A broadband communication and linearization technology, applied in the field of communication, can solve the problems of low convergence accuracy, slow system convergence, and increase in the number of updated tap groups, so as to eliminate memory nonlinear distortion, simplify the update method and structure, and reduce the impact of small effect
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[0032] refer to figure 2 The device of the present invention consists of a constellation mapper 111, a serial-to-parallel converter 101, a frequency-domain signal trimmer 102A, a frequency-domain lookup table updater 102B, an inverse Fourier transformer 103, a parallel-to-serial converter 104, and a time-domain signal trimmer 105A, time-domain lookup table updater 105B, time-domain adaptive filter 106A, tap coefficient updater 106B, amplifier 109, attenuator 110, parallel-to-serial converter 107 and Fourier converter 108. in:
[0033] The serial-to-parallel converter 101 is connected after the constellation mapper 111, and the serial-to-parallel converter 101 converts the serial signal into a parallel signal. The frequency-domain signal trimmer 102A is connected between the serial-to-parallel converter 101 and the inverse Fourier transformer 103, and the frequency-domain signal trimmer 102A receives the parallel signal output by the serial-to-parallel converter 101, accordin...
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