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Title:
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Reducción de factor de cresta y predistorsión digital de señales QAM de banda ancha para equipos backhaul de próxima generación
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Author:
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López Bueno, David; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Bartzoudis, Nikolaos; Payaró Llisterri, Miquel
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. CSC - Components and Systems for Communications Research Group |
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Abstract:
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This paper evaluates the linearity performance in a
wideband wireless backhaul transmitter when applying crest
factor reduction (CFR) and digital predistortion (DPD)
techniques to enhance the transmitted output power, and thus
the power efficiency of the overall system, while fulfilling the
communications system quality requirements and
regulations.The CFR technique applied is the peak cancellation
(PC), while the linearizer is based in an adaptive DPD with
memory effects compensation. Order reduction techniques are
also applied to mitigate the complexity of the DPD structure.
The power amplifier is based in a 15 Watts GaN transistor. The
test signal follows a multiband 4 channel 1024-QAM
configuration (reaching up to 1 Gbps) with 12 dB of PAPR at
RF and 112 MHz bandwidth (28 MHz each channel). A testbed
for evaluating the PC and DPD linearization performance of the
RF subsystem was deployed and experimental results are
presented in this paper. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència
-Power amplifiers
-Amplificadors de potència |
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Rights:
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Document type:
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Article - Published version
Conference Object |
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Published by:
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Unión Científica Internacional de Radio (URSI)
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