基于二次差分概率的无线信道估计方法

doi:10.11959/j.issn.1000-0801.2017015

Abstract

Abstract:

The fifth generation (5G) mobile communication technology has the characteristics of high speed and large bandwidth,which makes the fading of radio signal in time domain and frequency domain more obviously.With the increase of differential values statistical step and the spatial sampling interval,the channel estimation method based on the differential probability can't track the deep fading area and the peak area was over-tacked.In view of the above problems,a channel estimation method based on quadratic differentials probability was proposed.Firstly,the valley point and peak point of the fading curve were found.Then,the estimated differential values of deep fading area and peak area were improved by quadratic differential probability.Finally,the estimated gains were obtained by the difference operation.Simulation results show that,this method can improve the whole tracking performance effectively and reduce the tracking error.

Key words: 5G, mobile radio channel, channel estimation, differentials probability, quadratic differentials

CLC Number:

TN929.5

Lijiao WANG,Weiwei DU,Fan LI,Zhisen WANG. Radio channel estimation method based on quadratic differentials probability[J]. Telecommunications Science, 2017, 33(1): 34-44.

Figures/Tables 19

References 25

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m	期望	均方差
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m	期望	均方差
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1 000万	0.000 78	0.002 32

m	期望	均方差
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100万	0.001 26	0.002 33
1 000万	0.001 20	0.002 25

m	期望	均方差
1万	0.001 92	0.005 08
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100万	0.001 06	0.003 52
1 000万	0.000 98	0.003 40

m	期望	均方差
1万	0.002 14	0.002 88
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1 000万	0.001 30	0.002 44

Radio channel estimation method based on quadratic differentials probability

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Figures/Tables 19

References 25

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N	f_c/GHz	m	?_k/(dB·cm^-1)	?/cm
16	5	100万	0.05	0.1λ_c
16	5	100万	0.1	0.1λ_c
16	5	100万	0.2	0.1λ_c

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