CN103346857B - Based on the pretreated New BP Neural SK method for transmitting signals of binary data - Google Patents

Abstract

The present invention discloses a kind of based on the pretreated New BP Neural SK method for transmitting signals of binary data, comprises the following steps: scale-of-two �� 1 data stream before entering channel interleaver is carried out the packet transaction that length is 9 launching end; By often organizing data, to be mapped as length one by one be 8 subsequently, and element comprises the trinary data group of+1 ,-1 and 0; Pretreated new trinary data stream being carried out channel intertexture and modulates, element �� 1 is mapped as BPSK symbol, and element 0 is mapped as spacing wave; It is the packet transaction of 8 that receiving end carries out the inverse laggard line length that interweaves to received signal, and utilizes whether an energy threshold comprises two spacing waves to judge in the transmitting signal of this group correspondence; Judged result and inverse mapping relation demodulation is utilized to obtain the numerical information of 9 bit sizes that this group signal carries subsequently. Compared with traditional BP SK technology, the present invention is when frequency efficiency improves 12.5%, it is possible to the performance of BER gain of the about 1.3dB that reentries.

Description

Based on the pretreated New BP Neural SK method for transmitting signals of binary data

Technical field

The present invention relates to a kind of method for transmitting signals, especially a kind of based on the pretreated New BP Neural SK method for transmitting signals of binary data, belong to signal transmission technology field.

Background technology

BPSK (full name is BinaryPhaseShiftKeying) is one of simulating signal conversion mode converting data value to, it it is the one utilizing the plural wave combination of deviation phase place to carry out performance information key control phase shift mode, BPSK employs the sine wave of benchmark and the wave of phase reversal, a side is made to be 0, the opposing party is 1, such that it is able to transmit the information accepting 2 values (1 bit) simultaneously.

In the poor situation of channel condition, or information transmission error rate index require very low when, although sending end adopted in modulation system lowest-order simultaneously frequency efficiency be also minimum BPSK modulation system to carry out Signal transmissions, but its performance of BER is it is possible to the performance requriements of radio communication system cannot be met in some circumstances.

Summary of the invention

The object of the present invention is the defect in order to solve above-mentioned prior art, it is provided that a kind of based on the pretreated New BP Neural SK method for transmitting signals of binary data, it is possible to realize and performance of BER better information transmission higher than traditional BP SK technology frequency efficiency.

The object of the present invention can by taking following technical scheme to reach:

Based on the pretreated New BP Neural SK method for transmitting signals of binary data, it is characterised in that comprise the following steps:

1) scale-of-two �� 1 data stream before entering channel interleaver is carried out the packet transaction that length is 9 launching end;

2) by step 1) in often organize length be 9 binary data to be mapped to length one by one be 8, element is the trinary data group of �� 1 or 0;

3) to step 2) map the trinary data group that obtains and carry out channel intertexture and modulate: element �� 1 will be mapped as BPSK symbol, and element 0 is mapped as the spacing wave not accounting for any emitted energy;

4) by step 3) signal after modulation is emitted to wireless channel and transmits;

5) at receiving end by receiving antenna receiving step 4) signal of wireless channel transmission, utilize receiving apparatus to carry out inverse interleaving treatment to received signal;

6) establish receiving antenna to have N root, the signal through inverse interleaving treatment is carried out the packet transaction that length is 8, obtain grouping Received signal strength matrix, as follows:

$Y=\left[\begin{array}{c}{Y}_1\\ Y_2\\ \·\\ \·\\ \·\\ Y_8\end{array}\right]=\left[\begin{array}{cccc}{y}_{11}& y_{12}& \·\·\·& y_{1N}\\ y_{21}& y_{22}& \·\·\·& y_{2N}\\ \·& \·& & \·\\ \·& \·& & \·\\ \·& \·& \·\·\·& \·\\ y_{81}& y_{82}& \·\·\·& y_{8N}\end{array}\right]---\left(1\right)$

Wherein N >=1;

7) following formula is calculated according to formula (1):

$\begin{array}{c}{P}_1=\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{\left|y_{1n}\right|}^2+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{\left|y_{2n}\right|}^2,\\ P_2=\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{\left|y_{3n}\right|}^2+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{\left|y_{4n}\right|}^2,\\ P_3=\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{\left|y_{5n}\right|}^2+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{\left|y_{6n}\right|}^2,\\ P_4=\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{\left|y_{7n}\right|}^2+\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{\left|y_{8n}\right|}^2;\end{array}$

8) P is compared₁��p₂, Px and P₄Value, obtains minimum value

9) by P_rCompare with the threshold value C of setting, if P_r�� C, then the element value of 2r-1 and 2r position of receiving end judgement trinary data group is 0, performs step 10); If P_r> C, then receiving end judgement trinary data group only comprises the element that value is �� 1, performs step 11);

10) the 7th, 8 and 9 element value of binary data set is adjudicated, and obtain the Received signal strength matrix of equal value of the 1 to 6 element, utilize BPSK demodulating algorithm that residue 6 binary data group element numerical value are carried out demodulation work, thus obtain the numerical value of whole 9 elements often organizing binary data launching end;

11) the 9th element value of binary data set is adjudicated, and obtain the Received signal strength matrix of equal value of the 1 to 8 element, utilize BPSK demodulating algorithm that residue 8 binary data group element numerical value are carried out demodulation work, thus obtain the numerical value of whole 9 elements often organizing binary data launching end.

As a kind of preferred version, step 2) described by often organize length be 9 binary data to be mapped to length one by one be 8, element be the trinary data group of �� 1 or 0, and mapping relation is specific as follows:

If a) the 9th element value of binary integrated data is-1, then the 1 to 8 element value of trinary data group and the 1 to 8 element value of binary data set are consistent;

If b) the 9th element value of binary integrated data is 1, and the 7th, 8 element value is-1,1, then the 1st, 2 element value of trinary data group is 0, the value that 3 to 6 element value and binary data are worth identical position is identical, 7th, the 1st, the 2nd element value of 8 element values and binary data value is identical;

If c) the 9th element value of binary integrated data is 1, and the 7th, 8 element value is 1 ,-1, then the 3rd, 4 element value of trinary data group is 0,1st, to be worth the value of identical position identical for 2,5 and 6 element values and binary data, 7th, the 3rd, the 4th element value of 8 element values and binary data value is identical;

If d) the 9th element value of binary integrated data is 1, and the 7th, 8 element value is-1 ,-1, then the 5th, 6 element value of trinary data group is 0, the value that 1 to 4 element value and binary data are worth identical position is identical, 7th, the 5th, the 6th element value of 8 element values and binary data value is identical;

If e) the 9th element value of binary integrated data is 1, and the 7th, 8 element value is 1,1, then to be that the 0, the 1 to 6 element value and binary data are worth the value of identical position identical for the 7th, 8 element value of trinary data group.

As a kind of preferred version, step 9) the threshold value C of described setting is that the function by launching signal signal to noise ratio and the signal fading factor calculates, as follows:

$C=\mathrm{\&lambda;\&rho;}\underset{r=1}{\overset{2N}{\mathrm{\&Sigma;}}}{\left|h_r\right|}^2(0<\mathrm{\&lambda;}<1)---\left(2\right)$

Wherein, �� represents the average signal-to-noise ratio launching signal; h_rRepresent 2N the channel fading factor of energy and that minimum two row Received signal strength.

As a kind of preferred version, step 10) the 7th, 8 and 9 element value of described judgement binary data set, and obtain the Received signal strength matrix of equal value of the 1 to 6 element, concrete adjustment is as follows:

If a) P_rMinimum value be P₁, then the 7th, 8 and 9 element value of receiving end judgement binary data set is respectively-1,1 and 1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 6 element is:

${\tilde{Y}}_1=\left[\begin{array}{c}{Y}_7\\ Y_8\\ Y_3\\ Y_4\\ Y_5\\ Y_6\end{array}\right]$

If b) P_rMinimum value be P₂, then the 7th, 8 and 9 element value of receiving end judgement binary data set is respectively 1 ,-1 and 1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 6 element is:

${\tilde{Y}}_2=\left[\begin{array}{c}{Y}_1\\ Y_2\\ Y_7\\ Y_8\\ Y_5\\ Y_6\end{array}\right]$

If c) P_rMinimum value be P₃, then the 7th, 8 and 9 element value of receiving end judgement binary data set is respectively-1 ,-1 and 1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 6 element is:

${\tilde{Y}}_3=\left[\begin{array}{c}{Y}_1\\ Y_2\\ Y_3\\ Y_4\\ Y_7\\ Y_8\end{array}\right]$

If d) P_rMinimum value be P₄, then the 7th, 8 and 9 the element value that receiving end adjudicates this binary data set is respectively 1,1 and 1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 6 element is:

${\tilde{Y}}_4=\left[\begin{array}{c}{Y}_1\\ Y_2\\ Y_3\\ Y_4\\ Y_5\\ Y_6\end{array}\right].$

As a kind of preferred version, step 11) the 9th element value of described judgement binary data set, adjust as follows:

9th element value of receiving end judgement binary data set is-1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 8 element is:

$\tilde{Y}4=\left[\begin{array}{c}{Y}_1\\ Y_2\\ Y_3\\ Y_4\\ Y_5\\ Y_6\\ Y_7\\ Y_8\end{array}\right].$

The present invention has following useful effect relative to prior art:

The present invention to do not enter channel interleaver �� after 1 binary data flow to the grouping pre-treatment that line length is 9, it is 8 that data are mapped as length one by one, element is the trinary data group of �� 1 and 0, after new data is carried out channel intertexture wherein �� 1 element will be mapped as traditional BPSK symbol, 0 element is then mapped as the spacing wave not carrying emitted energy; After receiving end carries out inverse intertexture to received signal, the packet transaction that length is 8 will be carried out, and utilize energy threshold judges often organize in the transmitting signal corresponding to Received signal strength whether comprise 2 continuous spacing waves, utilize judged result and inverse mapping relation to obtain the numerical information of 9 bit sizes that this group signal carries by BPSK algorithm demodulation subsequently. Compared with traditional BP SK technology, the present invention is when frequency efficiency improves 12.5%, it is possible to the performance of BER gain of the about 1.3dB that reentries.

Accompanying drawing explanation

Fig. 1 is binary data preprocessing process schematic diagram of the present invention.

Fig. 2 is that single receiving antenna launches signal type evaluation algorithm and traditional BP SK modulation signal error rate performance curve comparison figure with the present invention during two receiving antenna.

Embodiment

Embodiment 1:

The method for transmitting signals of the present embodiment comprises as follows:

1) scale-of-two �� 1 data stream before entering channel interleaver is carried out the packet transaction that length is 9 launching end;

2) by step 1) in often organize length be 9 binary data to be mapped to length one by one be 8, element is the trinary data group of �� 1 or 0, maps relation as shown in Figure 1, specific as follows:

If a) the 9th element value of binary integrated data is-1, then the 1 to 8 element value of trinary data group and the 1 to 8 element value of binary data set are consistent;

If b) the 9th element value of binary integrated data is 1, and the 7th, 8 element value is-1,1, then the 1st, 2 element value of trinary data group is 0, the value that 3 to 6 element value and binary data are worth identical position is identical, 7th, the 1st, the 2nd element value of 8 element values and binary data value is identical;

If c) the 9th element value of binary integrated data is 1, and the 7th, 8 element value is 1 ,-1, then the 3rd, 4 element value of trinary data group is 0,1st, to be worth the value of identical position identical for 2,5 and 6 element values and binary data, 7th, the 3rd, the 4th element value of 8 element values and binary data value is identical;

If d) the 9th element value of binary integrated data is 1, and the 7th, 8 element value is-1 ,-1, then the 5th, 6 element value of trinary data group is 0, the value that 1 to 4 element value and binary data are worth identical position is identical, 7th, the 5th, the 6th element value of 8 element values and binary data value is identical;

If e) the 9th element value of binary integrated data is 1, and the 7th, 8 element value is 1,1, then to be that the 0, the 1 to 6 element value and binary data are worth the value of identical position identical for the 7th, 8 element value of trinary data group.

3) to step 2) map the trinary data group that obtains and carry out channel intertexture and modulate: element �� 1 will be mapped as BPSK symbol, and element 0 is mapped as the spacing wave not accounting for any emitted energy;

4) by step 3) signal after modulation is emitted to wireless channel and transmits;

5) at receiving end by receiving antenna receiving step 4) signal of wireless channel transmission, utilize receiving apparatus to carry out inverse interleaving treatment to received signal;

6) establish receiving antenna to have N root, the signal through inverse interleaving treatment is carried out the packet transaction that length is 8, obtain grouping Received signal strength matrix, as follows:

$Y=\left[\begin{array}{c}{Y}_1\\ Y_2\\ \&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\\ Y_8\end{array}\right]=\left[\begin{array}{cccc}{y}_{11}& y_{12}& \&CenterDot;\&CenterDot;\&CenterDot;& y_{1N}\\ y_{21}& y_{22}& \&CenterDot;\&CenterDot;\&CenterDot;& y_{2N}\\ \&CenterDot;& \&CenterDot;& & \&CenterDot;\\ \&CenterDot;& \&CenterDot;& & \&CenterDot;\\ \&CenterDot;& \&CenterDot;& \&CenterDot;\&CenterDot;\&CenterDot;& \&CenterDot;\\ y_{81}& y_{82}& \&CenterDot;\&CenterDot;\&CenterDot;& y_{8N}\end{array}\right]---\left(1\right)$

Wherein N >=1;

7) following formula is calculated according to formula (1):

$\begin{array}{c}{P}_1=\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{\left|y_{1n}\right|}^2+\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{\left|y_{2n}\right|}^2,\\ P_2=\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{\left|y_{3n}\right|}^2+\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{\left|y_{4n}\right|}^2,\\ P_3=\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{\left|y_{5n}\right|}^2+\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{\left|y_{6n}\right|}^2,\\ P_4=\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{\left|y_{7n}\right|}^2+\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{\left|y_{8n}\right|}^2;\end{array}$

8) P is compared₁��P₂��P₃With Px value, obtain minimum value P_r=min (P₁, P₂, P₃, P₄);

9) by launching the function calculated threshold C of signal signal to noise ratio and the signal fading factor, as follows:

$C=\mathrm{\&lambda;\&rho;}\underset{r=1}{\overset{2N}{\mathrm{\&Sigma;}}}{\left|h_r\right|}^2(0<\mathrm{\&lambda;}<1)---\left(2\right)$

By P_rComparing with threshold value C, if Px��C, then the element value of 2r-1 and 2r position of receiving end judgement trinary data group is 0, performs step 10); If P_r> C, then receiving end judgement trinary data group only comprises the element that value is �� 1, performs step 11);

10) adjudicating the 7th, 8 and 9 element value of binary data set, and obtain the Received signal strength matrix of equal value of the 1 to 6 element, concrete adjustment is as follows:

If a) P_rMinimum value be P₁, then the 7th, 8 and 9 element value of receiving end judgement binary data set is respectively-1,1 and 1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 6 element is:

${\tilde{Y}}_1=\left[\begin{array}{c}{Y}_7\\ Y_8\\ Y_3\\ Y_4\\ Y_5\\ Y_6\end{array}\right]$

If b) P_rMinimum value be P₂, then the 7th, 8 and 9 element value of receiving end judgement binary data set is respectively 1 ,-1 and 1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 6 element is:

${\tilde{Y}}_2=\left[\begin{array}{c}{Y}_1\\ Y_2\\ Y_7\\ Y_8\\ Y_5\\ Y_6\end{array}\right]$

If c) P_rMinimum value be P₃, then the 7th, 8 and 9 element value of receiving end judgement binary data set is respectively-1 ,-1 and 1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 6 element is:

${\tilde{Y}}_3=\left[\begin{array}{c}{Y}_1\\ Y_2\\ Y_3\\ Y_4\\ Y_7\\ Y_8\end{array}\right]$

If d) P_rMinimum value be P₄, then the 7th, 8 and 9 the element value that receiving end adjudicates this binary data set is respectively 1,1 and 1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 6 element is:

${\tilde{Y}}_4=\left[\begin{array}{c}{Y}_1\\ Y_2\\ Y_3\\ Y_4\\ Y_5\\ Y_6\end{array}\right]$

Utilize BPSK demodulating algorithm that residue 6 binary data group element numerical value are carried out demodulation work, thus obtain the numerical value of whole 9 elements often organizing binary data launching end, thus obtain the numerical value of whole 9 elements often organizing binary data launching end;

11) adjudicate the 9th element value of binary data set, and obtain the Received signal strength matrix of equal value of the 1 to 8 element, the 9th of binary data set the element value is adjusted to-1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 8 element is: $\tilde{Y}4=\left[\begin{array}{c}{Y}_1\\ Y_2\\ Y_3\\ Y_4\\ Y_5\\ Y_6\\ Y_7\\ Y_8\end{array}\right]$

Utilize BPSK demodulating algorithm that residue 8 binary data group element numerical value are carried out demodulation work, thus obtain the numerical value of whole 9 elements often organizing binary data launching end.

The method for transmitting signals of the present embodiment is modulated at traditional BP SK and is introduced novel information carrying mode on the basis of technology, novel packet signal wherein takes full advantage of the time diversity gain of wireless channel, modulate technology compared with BPSK, certain performance of BER gain can also be obtained when frequency efficiency improves 12.5%. Provide transmitted error rate performance analysis and the proof procedure of the method for transmitting signals of the present embodiment below:

Owing to 0 element in trinary data group corresponds to the spacing wave of non-emissive energy, therefore corresponding Received signal strength is pure noise signal; And �� 1 element corresponds to BPSK energy signal, therefore corresponding Received signal strength is by the energy signal of sound pollution, does not lose generality, and in formula (1), in grouping Received signal strength matrix, any one element representation is:

$y_{m,n}=\left\{\begin{array}{c}\&PlusMinus;\frac{9}{7}\sqrt{\mathrm{\&rho;}}{h}_{m,n}+w_{m,n}\\ w_{m,n}\end{array}\right.,1\&le;m\&le;\mathrm{8,1}\&le;n\&le;N$

Wherein �� represents the average signal-to-noise ratio launching signal; h_{M, n}Representing channel fading factor when receiving end n-th antenna receives in trinary data group transmitting signal corresponding to the m element, owing to data set have passed through channel interleaving treatment, therefore these channel fading factors are separate; w_{M, n}Representing noise item, for separate, average is 0, and variance is the real gaussian random variable of 1.

According to step 7) computation process it will be seen that Received signal strength energy corresponding to 20 elements and can being expressed equivalently as:

$P_{\mathrm{zeros}}=\underset{k=1}{\overset{2n}{\mathrm{\&Sigma;}}}{\left|w_k\right|}^2$

Wherein w_kFor separate, average is 0, and variance is the real gaussian random variable of 1; And Received signal strength energy corresponding to two �� 1 element and can being expressed equivalently as:

$P_{\mathrm{BPSk}}=\underset{k=1}{\overset{2N}{\mathrm{\&Sigma;}}}{|\&PlusMinus;\frac{9}{7}\sqrt{\mathrm{\&rho;}}{h}_k+{\tilde{w}}_k|}^2$

Wherein h_kFor the separate channel fading factor,For separate, average is 0, and variance is the real gaussian random variable of 1.

So launch signal is spacing wave and receiving end is mistaken for bpsk signal them probability tables illustrated as:

${\stackrel{\&OverBar;}{\mathrm{Pr}}}_{e(0\&RightArrow;\&PlusMinus;1)}=\mathrm{pr}(P_{\mathrm{zeros}}\&GreaterEqual;C)$

Launch signal is bpsk signal and receiving end is mistaken for spacing wave them probability tables illustrated as:

${\stackrel{\&OverBar;}{\mathrm{Pr}}}_{e(\&PlusMinus;1\&RightArrow;0)}=\mathrm{pr}(P_{\mathrm{BPSK}}\&le;C)$

Visible, the diversity gain number of decision algorithm is 2N.

When using maximum signal to noise ratio to merge algorithm, the performance of BER Pr of tradition bpsk signal_eExpression is:

${\mathrm{Pr}}_e=\mathrm{pr}(\sqrt{\mathrm{\&rho;}\underset{n=1}{\overset{N}{\mathrm{\&Sigma;}}}{\left|H_n\right|}^2}+W\&le;0)$

Wherein H_kFor the separate channel fading factor, W is average is 0, and variance is the real gaussian random variable of 1, and its diversity gain number is N.

As shown in Figure 2, give Rayleigh fading channel and when receiving antenna number is respectively 1 and 2, transmitting signal in embodiment is spacing wave and receiving end is mistaken for the probability of bpsk signal them, transmitting signal is bpsk signal and receiving end is mistaken for probability and the bpsk signal performance of BER curve of spacing wave them, and wherein the decline factor of this Rayleigh fading channel is defined as��₁And ��₂Be average being respectively 0, variance is the real gaussian random variable of 0.1, and when receiving antenna is 2, system adopts maximum signal to noise ratio to merge algorithm. By comparing it may be seen that be the diversity gain number that the evaluation algorithm of spacing wave or bpsk signal doubles BPSK demodulating algorithm owing to possessing to launching signal, its error rate fall off rate is obviously higher than the bit error ratio fall off rate of the bpsk signal under identical parameters. When receiving antenna number is respectively 1 and 2, when launching signal signal to noise ratio and be reached for 25dB and 20dB respectively, the error rate of evaluation algorithm just only has about the 1/10 of the bit error ratio of BPSK symbol, and along with launching the increase of signal signal to noise ratio, both difference will expansion rapidly further.

When the low error rate of evaluation algorithm, receiving end not only can demodulate with low error rate and often organize the data on the 9th position in binary data, simultaneously owing to the spacing wave that 0 element is corresponding does not occupy power resource, therefore the snr of received signal of other BPSK symbol can improve 9/7 times, thus reduces the demodulation error rate of its corresponding binary data. Therefore seeing on the whole, the present invention provides the demodulating algorithm of a kind of novel packet signal design and correspondence thereof, when frequency efficiency is identical with BPSK modulation technology, it is possible to obtain the performance of BER gain of about 1.4dB.

The above; it is only the preferred embodiment of the invention; but protection scope of the present invention is not limited thereto; any it is familiar with those skilled in the art in scope disclosed in this invention; technical scheme and invention design thereof according to the present invention are equal to replacement or are changed, and all belong to protection scope of the present invention.

Claims (4)

1. based on the pretreated New BP Neural SK method for transmitting signals of binary data, it is characterised in that comprise the following steps:

1) scale-of-two �� 1 data stream before entering channel interleaver is carried out the packet transaction that length is 9 launching end;

2) by step 1) in often organize length be 9 binary data to be mapped to length one by one be 8, element is the trinary data group of �� 1 or 0;

3) to step 2) map the trinary data group that obtains and carry out channel intertexture and modulate: element �� 1 will be mapped as BPSK symbol, and element 0 is mapped as the spacing wave not accounting for any emitted energy;

4) by step 3) signal after modulation is emitted to wireless channel and transmits;

5) at receiving end by receiving antenna receiving step 4) signal of wireless channel transmission, utilize receiving apparatus to carry out inverse interleaving treatment to received signal;

6) establish receiving antenna to have N root, the signal through inverse interleaving treatment is carried out the packet transaction that length is 8, obtain grouping Received signal strength matrix, as follows:

Wherein N >=1;

7) following formula is calculated according to formula (1):

$\begin{array}{c}{P}_1=\underset{n=1}{\overset{N}{\&Sigma;}}|y_{1n}{|}^2+\underset{n=1}{\overset{N}{\&Sigma;}}|y_{2n}{|}^2,\\ P_2=\underset{n=1}{\overset{N}{\&Sigma;}}|y_{3n}{|}^2+\underset{n=1}{\overset{N}{\&Sigma;}}|y_{4n}{|}^2,\\ P_3=\underset{n=1}{\overset{N}{\&Sigma;}}|y_{5n}{|}^2+\underset{n=1}{\overset{N}{\&Sigma;}}|y_{6n}{|}^2,\\ P_4=\underset{n=1}{\overset{N}{\&Sigma;}}|y_{7n}{|}^2+\underset{n=1}{\overset{N}{\&Sigma;}}|y_{8n}{|}^2;\end{array}$

8) P is compared₁��P₂��P₃And P₄Value, obtains minimum value P_r=min (P₁, P₂, P₃, P₄);

9) by P_rCompare with the threshold value C of setting, if P_r�� C, then the element value of 2r-1 and 2r position of receiving end judgement trinary data group is 0, performs step 10); If P_r> C, then receiving end judgement trinary data group only comprises the element that value is �� 1, performs step 11);

10) the 7th, 8 and 9 element value of binary data set is adjudicated, and obtain the Received signal strength matrix of equal value of the 1 to 6 element, utilize BPSK demodulating algorithm that residue 6 binary data group element numerical value are carried out demodulation work, thus obtain the numerical value of whole 9 elements often organizing binary data launching end;

11) the 9th element value of binary data set is adjudicated, and obtain the Received signal strength matrix of equal value of the 1 to 8 element, utilize BPSK demodulating algorithm that residue 8 binary data group element numerical value are carried out demodulation work, thus obtain the numerical value of whole 9 elements often organizing binary data launching end;

Step 2) described by often organize length be 9 binary data to be mapped to length one by one be 8, element is the trinary data group of �� 1 or 0, maps relation specific as follows:

If a) the 9th element value of binary integrated data is-1, then the 1 to 8 element value of trinary data group and the 1 to 8 element value of binary data set are consistent;

If b) the 9th element value of binary integrated data is 1, and the 7th, 8 element value is-1,1, then the 1st, 2 element value of trinary data group is 0, the value that 3 to 6 element value and binary data are worth identical position is identical, 7th, the 1st, the 2nd element value of 8 element values and binary data value is identical;

If c) the 9th element value of binary integrated data is 1, and the 7th, 8 element value is 1 ,-1, then the 3rd, 4 element value of trinary data group is 0,1st, to be worth the value of identical position identical for 2,5 and 6 element values and binary data, 7th, the 3rd, the 4th element value of 8 element values and binary data value is identical;

If d) the 9th element value of binary integrated data is 1, and the 7th, 8 element value is-1 ,-1, then the 5th, 6 element value of trinary data group is 0, the value that 1 to 4 element value and binary data are worth identical position is identical, 7th, the 5th, the 6th element value of 8 element values and binary data value is identical;

If e) the 9th element value of binary integrated data is 1, and the 7th, 8 element value is 1,1, then to be that the 0, the 1 to 6 element value and binary data are worth the value of identical position identical for the 7th, 8 element value of trinary data group.

2. according to claim 1 based on the pretreated New BP Neural SK method for transmitting signals of binary data, it is characterised in that: step 9) the threshold value C of described setting is that the function by launching signal signal to noise ratio and the signal fading factor calculates, as follows:

$C=\mathrm{\&lambda;}\mathrm{\&rho;}\underset{r=1}{\overset{2N}{\&Sigma;}}|h_r{|}^2,(0<\mathrm{\&lambda;}<1)---\left(2\right)$

Wherein, �� represents the average signal-to-noise ratio launching signal; h_rRepresent 2N the channel fading factor of energy and that minimum two row Received signal strength.

3. according to claim 2 based on the pretreated New BP Neural SK method for transmitting signals of binary data, it is characterised in that: step 10) the 7th, 8 and 9 element value of described judgement binary data set, concrete adjustment is as follows:

If a) P_rMinimum value be P₁, then the 7th, 8 and 9 element value of receiving end judgement binary data set is respectively-1,1 and 1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 6 element is:

${\tilde{Y}}_1=\left[\begin{array}{c}{Y}_7\\ Y_8\\ Y_3\\ Y_4\\ Y_5\\ Y_6\end{array}\right]$

If b) P_rMinimum value be P₂, then the 7th, 8 and 9 element value of receiving end judgement binary data set is respectively 1 ,-1 and 1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 6 element is:

${\tilde{Y}}_2=\left[\begin{array}{c}{Y}_1\\ Y_2\\ Y_7\\ Y_8\\ Y_5\\ Y_6\end{array}\right]$

If c) P_rMinimum value be P₃, then the 7th, 8 and 9 element value of receiving end judgement binary data set is respectively-1 ,-1 and 1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 6 element is:

${\tilde{Y}}_3=\left[\begin{array}{c}{Y}_1\\ Y_2\\ Y_3\\ Y_4\\ Y_7\\ Y_8\end{array}\right]$

If d) P_rMinimum value be P₄, then the 7th, 8 and 9 the element value that receiving end adjudicates this binary data set is respectively 1,1 and 1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 6 element is:

${\tilde{Y}}_4=\left[\begin{array}{c}{Y}_1\\ Y_2\\ Y_3\\ Y_4\\ Y_5\\ Y_6\end{array}\right].$

4. according to claim 2 based on the pretreated New BP Neural SK method for transmitting signals of binary data, it is characterised in that: step 11) the 9th element value of described judgement binary data set, adjust as follows:

9th element value of receiving end judgement binary data set is-1, and the Received signal strength matrix representation of equal value of binary data set the 1 to 8 element is:

$\tilde{Y}4=\left[\begin{array}{c}{Y}_1\\ Y_2\\ Y_3\\ Y_4\\ Y_5\\ Y_6\\ Y_7\\ Y_8\end{array}\right].$