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NONLINEAR ENCODER AND ITS METHOD, NONLINEAR DECODER AND ITS METHOD AND DATA TRANSMITTING METHOD THROUGH NONLINEAR CHANNEL
NONLINEAR ENCODER AND ITS METHOD, NONLINEAR DECODER AND ITS METHOD AND DATA TRANSMITTING METHOD THROUGH NONLINEAR CHANNEL
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机译:通过非线性信道的非线性编码器及其方法,非线性解码器及其方法和数据传输方法
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摘要
PURPOSE: To reduce effects of synergetic noise by making a transmission channel have a characteristic that is partially a nonlinear function, making flexion function almost an inverse function to the nonlinear function and impressing the sequence of a signal point that is flexed to the transmission channel. ;CONSTITUTION: Flexion is executed by multiplying a flexion multiplication factor that is generated according to a selected flexion function. That is, a nonlinear encoder 130 generates a flexion multiplication factor and gives it to multipliers 122 and 123. The multipliers 122 and 123 multiply, resultantly add a flexed value to a modulator 125 and generates a modulation line signal that represents the stream of the flexed signal points with a standard procedure. Next, the signal is added to a telephone channel of a voice band through a lead 130. This reduces noise that is caused by non-linearity in a trellis coding data transmission system and improves a signal point arrangement flexion system.;COPYRIGHT: (C)1995,JPO
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