Informatics Publishing Limited

Khaled A. Ramadan ¹, EL-Sayed M. El-Rabaie ¹, Mohmed Abd EL-Nabi ², Emad S. Hassan ¹, Fathi E. Abd El-Samie ¹, Xu Zhu ³

Affiliations
1 Department of Electronics and Electrical Communications Engineering, Menoufia University, 32952, Menouf, EG
2 Department of Electronics and Electrical Communications Engineering, Menoufia University, 32952, Menouf, EG
3 Department of Electrical Engineering and Electronics, The University of Liverpool, L69 3GJ, GB

Abstract

This paper presents the personification of the Digital Video Broadcasting Terrestrial (DVB-T) system with signal transformation (CPM-OFDM). The suggested formation collect the feature of palliating the Peak-to-Average Power Ratio (PAPR) trouble in the Power Amplifier (PA) in extension take usefulness of the channel frequency diversity and power efficiency of CPM. Simulation outcome presenting that the execution of the CPM-DVB-T system with multi-path fading is bestead than its performance with single-path fading. and we suggest a chaotic interleaving scheme for Digital Video Broadcasting with Different OFDM Version. The proposed structure combines the advantages of both a reduction of PAPR problem in power amplifier and excellent spectral energy compaction property of DCT-OFDM. The proposed chaotic interleaver DCT-OFDM-DVB-T systems are implemented with FDE to avoid the intricacy of the equalization using the minimum mean square error (MMSE) equalizer as a type of frequency domain equalizers.

Keywords

DVB-T, DCT, CPM, Interleaving PAPR, MMSE Equalizer, ZF Equalizer.

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Khaled A. Ramadan ¹, Emad S. Hassan ², Xu Zhu ³, Abd-Elnaby Mohammed ⁴, EL-Sayed M. El-Rabaie ⁵, Fathi E.Abd El-Samie ⁶

Affiliations
1 ERTU (Egyptian Radio & TV Union), Cairo, EG
2 Dept.of Electronics and Electrical Communications, Menoufia University, EG
3 Huazhong University of Science and Technology, Wuhan, CN
4 Department of Electronics and Electrical Communication, Menoufia University, Menouf, EG
5 Electronic and Communication Engineering Dept., Menoufia University, EG
6 Department of Electronics and Electrical Communications, Menoufia University, Menouf, EG

Abstract

In this paper, we study the performance of the Digital Video Broadcasting-Terrestrial (DVB-T) system with Continuous Phase Modulation Orthogonal Frequency Division Multiplexing(CPM-OFDM). The proposed structure combines the advantage of mitigating the Peak-to-Average Power Ratio (PAPR) problem in the Power Amplifier (PA) in addition to exploiting the channel frequency diversity and power efficiency of CPM. The proposed CPM-OFDMDVB-T system is implemented with Frequency-Domain Equalization(FDE) to avoid the complexity of the equalization. Two types of frequency domain equalizers are considered and compared for performance evaluation of the system; the Zero-Forcing (ZF)equalizer and the Minimum Mean Square Error (MMSE) equalizer.Simulation results show that the performance of the CPM-OFDMDVB-T system with multi-path fading is better than its performance with single-path fading.

Keywords

DVB-T, OFDM, CPM, ZF Equalizer, MMSE Equalizer, PAPR.

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Shu Yan ¹, Jianhua Yao ², Ji Li ¹, Xu Zhu ³, Chao Wang ⁴, Wei He ¹, Shizhong Ma ¹

Affiliations
1 Northeast Petroleum University, Fazhan Road 99, Daqing 163 000, CN
2 Daqing Oilfield Sanwei Engineering Inspection Co.Ltd.,Yinhu Road 3, Daqing 163 000, CN
3 No.1 Oil Production Company, Daqing Oilfield Co. Ltd., Zhongqi Road 34, Daqing 163 000, CN
4 No.2 Oil Production Company, Daqing Oilfield Co. Ltd., Qiangxi Road 15, Daqing 163 000, CN

Abstract

Based on the dense well pattern data of PI2a unit of Putaohua oil layer in Sazhong development area of Daqing oilfield as well as modern sediment and outcrop, the paper attempts to determine point bar configuration parameters through a combination of quantitative methods to establish a three-dimensional point bar configuration model. On the basis of this model, the paper proposed a parameter-constrained three-dimensional configuration model of lateral accretion interbeds via spatial translation according to the planar trajectory of interbeds, so as to maximally restore the geological structure and ascertain the anisotropism and residual oil inside point bars. The results show that there are 15 interbeds in the study area with an azimuth of 320° and an obliquity range of 3.5°-13.1°. The interbeds average an interval of 9.5m, and each of them stretches 25m on average. The profile of interbeds is concave, which is slow, steep, slow from the bottom to the top, and the surface takes the shape of crescent. The profile of lateral accretion bodies is characterized by a echelon-like superimposed structure. The interior of point bars shows strong anisotropism due to interbeds, with residual oil being scarce at the bottom, abundant in the middle and extremely abundant at the top. Given the distribution pattern, the paper put forward suggestions for future residual oil potential tapping.

Keywords

Configuration Modelling, Anisotropism, Configuration Model, Configuration Parameter, Point Bar.

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