Patent ID: 8891684
Filing Date: 2014-11-18
Classification: H04B

Abstract:
1. A nonlinear estimating apparatus, comprising: an information sequence acquiring unit, configured to acquire a symbol information sequence of a pulse signal inputted by a transmitting side, wherein the inputted pulse signal is a single-polarization signal; a perturbation quantity generating unit, configured to calculate a weighted sum of interaction items of pulses on one or more moments relative to a current moment to obtain an additive perturbation quantity and a multiplicative perturbation quantity produced on a transmission link with a certain length, wherein the additive perturbation quantity is a weighted sum of the interaction items of the pulses excluding a current polarization state at the current moment, and the multiplicative perturbation quantity is a weighted sum of the interaction items of the pulses including the current polarization state at the current moment; and a signal estimating unit, configured to estimate the signal received at a receiving side according to the symbol information sequence, the additive perturbation quantity and the multiplicative perturbation quantity, wherein the signal estimating unit uses the following formula: where, t=kT represents a pulse interval, z=L represents the length of the transmission link, A where, Δ