Phasedemodulation method for minimizing phaseerror in communication sygnals
Phasedemodulation method for minimizing phaseerror in communication sygnals
 CN 1,489,352 A
 Filed: 08/21/2003
 Published: 04/14/2004
 Est. Priority Date: 10/09/2002
 Status: Active Application
First Claim
1. use digit phase demodulating algorithm the signal of communication of phase demodulating to be carried out to a method for demodulation by the sampling of predetermined quantity, comprise the following steps:
 A sampling is added to by equation ${F}_{k}\left(x\right)=\underset{}{\overset{}{\mathrm{\Σk=0k1{C}_{k}{x}^{k}}}}$In the digit phase demodulating algorithm representing, Wherein k represents to sample the quantity of number of times, C _{k}represent a complex constant;
With, The signal of communication of phase demodulating is carried out to demodulation.
Chinese PRB Reexamination
Abstract
Disclosed is a phasedemodulation method for minimizing the phase error of a communication signal. The phasedemodulation method for demodulating a phasedemodulated communication signal using a digital phasedemodulation algorithm includes the steps of: adding one sampling to the digital phasedemodulation algorithm represented by an equation <mathcwu id='"'"'MATHUS00001'"'"'> <NUMBER>1</NUMBER> <MATH> <MROW> <MROW> <MROW> <MSUB> <MI>F</MI> <MI>k</MI> </MSUB> <MO>f()</MO> <MROW> <MO>(</MO> <MI>x</MI> <MO>)</MO> </MROW> </MROW> <MO>=</MO> <MROW> <MUNDEROVER> <MO>[sum]</MO> <MROW> <MI>k</MI> <MO>=</MO> <MN>0</MN> </MROW> <MROW> <MI>k</MI> <MO></MO> <MN>1</MN> </MROW> </MUNDEROVER> <MO>*</MO> <MROW> <MSUB> <MI>C</MI> <MI>k</MI> </MSUB> <MO>*</MO> <MSUP> <MI>x</MI> <MI>k</MI> </MSUP> </MROW> </MROW> </MROW> <MO>,</MO> </MROW> </MATH> <mathematicafile id='"'"'MATHEMATICA00001'"'"' file='"'"'US20040071230A120040415M00001.NB'"'"'/> </MATHCWU> where k is the number of sampling times and Ck is a complex constant; and, demodulating the phasedemodulated communication signal. Accordingly, the phasedemodulation method minimizes the phase error generated when a noise is propagated in phase space during a demodulation time of the phasemodulated communication signal, using a minimum number of sampling times and a minimum number of calculation times.
3 Claims

1. use digit phase demodulating algorithm the signal of communication of phase demodulating to be carried out to a method for demodulation by the sampling of predetermined quantity, comprise the following steps:

A sampling is added to by equation ${F}_{k}\left(x\right)=\underset{}{\overset{}{\mathrm{\Σk=0k1{C}_{k}{x}^{k}}}}$ In the digit phase demodulating algorithm representing,Wherein k represents to sample the quantity of number of times, C _{k}represent a complex constant;
With,The signal of communication of phase demodulating is carried out to demodulation.


2. phase demodulating method according to claim 1, is wherein added to a sampling in digit phase demodulating algorithm step for making phase error minimum and is represented by equation below:

3. method according to claim 2, wherein by the value that meets the λ
 of equation, determine that phase error is minimum;
 of equation, determine that phase error is minimum;
Specification(s)