Comparison of nonlinear cancellation techniques for quadrature amplitude modulation systems (digital microwave radio)

摘要

A study was conducted to improve the time efficiency and ease of the nonlinearity adjustment in the digital microwave radio transmitter. This led to the development of a technique using the full spectrum of the digital radio channel. This technique is compared to the three-tone and notch (noise-load) techniques in terms of bit error rate (BER) performance, ease of adjustment, and operational convenience.