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Sideband Rejection and Feedback Isolation Impacts on DPD Performance

消耗积分:0 | 格式:pdf | 大小:4333 KB | 2011-06-13

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Texas Instruments has DPD (Digital Pre-Distortion) chipsets for BTS (Basestation Transceiver System)
and Repeater applications to improve overall system efficiency and meet various standard specifications.
The GC5330 is an ultra-wideband transmit and receive signal processor that includes digital up/downconverters.
The transmit path includes Crest Factor Reduction (CFR), Digital Pre-Distortion (DPD) and
associated feedback path, complex equalization, bulk up-conversion, complex equalization, and I/Q
imbalance correction. This document describes what levels of sideband image rejection and feedback
path isolation are required to achieve optimum DPD performance in Complex-IF Transmitter and Real-IF
Feedback architecture.

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