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Conference Paper Low-Complexity Nonlinearity Post Compensator for Shared Band Transmission in Satellite Communication
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Authors
Sooyeob Jung, Joon Gyu Ryu, Deock-Gil Oh, Heejung Yu
Issue Date
2018-08
Citation
International Symposium on Wireless Communication Systems (ISWCS) 2018, pp.1-6
Language
English
Type
Conference Paper
DOI
https://dx.doi.org/10.1109/ISWCS.2018.8491201
Abstract
In this paper, we propose a low-complexity nonlinearity post compensation technique for shared band transmission in the satellite communication system. To reduce the computational overhead of the Volterra equalizer with an adaptive algorithm, we employ the structure of the nonlinearity post compensator using a look-up table (LUT) with the error detector. The error detector computes the amplitude and angle errors between the reference signal and the received signal to estimate the characteristics of a travelling wave tube amplifier (TWTA). By accumulating the computed errors iteratively, the LUT can estimate the compensation values. Finally, we can compensate the nonlinearity of the TWTA by reading these compensation values from the LUT. The effectiveness of the proposed low-complexity technique is verified by simulation results.
KSP Keywords
Amplitude and angle, Look Up Table(LUT), Low complexity, an adaptive algorithm, compensation technique, reference signal, satellite communication system, simulation results, travelling wave tube