Many-valued irregularity recovery method, many-valued irregularity demodulator

摘要

Topic It is difficult to receive the influence of nonlinear characteristic of the power amplifier, 64 value quadrature amplitude modulations (64QAM) the many values irregularity above offers.SolutionsN of the amplitude level which r2=r1.2-^(i-1), becomes i=2 N vis-a-vis maximum amplitude level and r1 differs (integer of 3 or more) 4 phase phase modulation (QPSK) output being superimposed after the power amplification, M (= 22^N) value quadrature amplitude modulation (QAM) to form, at that time, N-1 electric power to expand output si excluding 4 phase phase modulation QPSK-1 which, has largest amplitude r1 synthesizing with directional coupler and the synthetic signal transmitting from the antenna of 2 systems of the output of profit and 4 phase phase modulation QPSK-1 and synthetic signal vector in the space being superimposedIt synthesizes. Having the serial/parallel transmitter, before each QPSK modulator as it divides inputs the input data of the 2N bit, you adjust profit and phase with the variable profit vessel and the variable phase vessel. Selective figure Figure 13