Considering that perfect channel state information(CSI) is difficult to obtain in practice,energy efficiency(EE) for distributed antenna systems(DAS) based on imperfect CSI and antennas selection is investigated in Ra...Considering that perfect channel state information(CSI) is difficult to obtain in practice,energy efficiency(EE) for distributed antenna systems(DAS) based on imperfect CSI and antennas selection is investigated in Rayleigh fading channel.A novel EE that is defined as the average transmission rate divided by the total consumed power is introduced.In accordance with this definition,an adaptive power allocation(PA) scheme for DAS is proposed to maximize the EE under the maximum transmit power constraint.The solution of PA in the constrained EE optimization does exist and is unique.A practical iterative algorithm with Newton method is presented to obtain the solution of PA.The proposed scheme includes the one under perfect CSI as a special case,and it only needs large scale and statistical information.As a result,the scheme has low overhead and good robustness.The theoretical EE is also derived for performance evaluation,and simulation result shows the validity of the theoretical analysis.Moreover,EE can be enhanced by decreasing the estimation error and/or path loss exponents.展开更多
Error Estimating Code (EEC) is a new channel coding method to estimate the Bit Error Rate (BER) information of the transmitted sequence. However, the estimated BER is not precise enough if the practical value of BER i...Error Estimating Code (EEC) is a new channel coding method to estimate the Bit Error Rate (BER) information of the transmitted sequence. However, the estimated BER is not precise enough if the practical value of BER is high. A weighted EEC estimation method is proposed to improve the accuracy performance of BER estimation by classifying the raw estimation results into intervals and multiplying them by different coefficients separately. The applications of weighted EEC in modulation selection scheme and distributed video coding are discussed. Simulation results show that the EEC-based modulation selection method can achieve better performance at a cost of little redundancy and computation, and the EEC-based rate estimation method in distributed video coding can save the decoding time.展开更多
HBO TV series–Game of Thrones has gone viral ever since its first release in 2011 and its soaring popularity among Chineseaudience has no doubt benefited from the"appropriate"E-C subtitles attached to it. T...HBO TV series–Game of Thrones has gone viral ever since its first release in 2011 and its soaring popularity among Chineseaudience has no doubt benefited from the"appropriate"E-C subtitles attached to it. This paper, through the analysis and discussion ofthe E-C subtitles of Game of Thrones from the perspective of Eco-translatology, demonstrates that the approach of Translation as Adap-tation and Selection(TAS) proves to be operational in subtitle translation, and gives further recommendations in the communicativetransformation of subtitle translation.展开更多
On the framework of eco- translatology, this thesis presents an introduction of the novel Fortress Besieged, the author and the translation work, and then gives an analysis of the translator's adaptation and selec...On the framework of eco- translatology, this thesis presents an introduction of the novel Fortress Besieged, the author and the translation work, and then gives an analysis of the translator's adaptation and selection of the translational eco-environment.展开更多
The importance of an interdisciplinary investigation into the translation of publicity texts cannot be overestimated at a time when the role of international communication grows rapidly,which in turn pushes the develo...The importance of an interdisciplinary investigation into the translation of publicity texts cannot be overestimated at a time when the role of international communication grows rapidly,which in turn pushes the development of globalization.Ecotranslatology takes the concept of"adaptation/selection"of Darwin’s Evolution Theory as its theoretical foundation,focusing on the integrity of the translation ecosystem,making a novel description and interpretation to the nature,process,standard,principles,methods of translation and translation phenomena from the perspective of Eco-translatology.Though the construct of the theory keeps expanding,there is still a lack of systematic discussion on translation activities with focus on the integrity and harmony in Eco-translatology.This study therefore aims to promote the need of researching publicity text translation from an Ecotranslatological perspective through the review of the existing literature in this field.展开更多
基金partially supported by the National Natural Science Foundation of China(61571225,61271255,61232016,U1405254)the Open Foundation of Jiangsu Engineering Center of Network Monitoring(Nanjing University of Information Science and Technology)(Grant No.KJR1509)+2 种基金the PAPD fundthe CICAEET fundShenzhen Strategic Emerging Industry Development Funds(JSGG20150331160845693)
文摘Considering that perfect channel state information(CSI) is difficult to obtain in practice,energy efficiency(EE) for distributed antenna systems(DAS) based on imperfect CSI and antennas selection is investigated in Rayleigh fading channel.A novel EE that is defined as the average transmission rate divided by the total consumed power is introduced.In accordance with this definition,an adaptive power allocation(PA) scheme for DAS is proposed to maximize the EE under the maximum transmit power constraint.The solution of PA in the constrained EE optimization does exist and is unique.A practical iterative algorithm with Newton method is presented to obtain the solution of PA.The proposed scheme includes the one under perfect CSI as a special case,and it only needs large scale and statistical information.As a result,the scheme has low overhead and good robustness.The theoretical EE is also derived for performance evaluation,and simulation result shows the validity of the theoretical analysis.Moreover,EE can be enhanced by decreasing the estimation error and/or path loss exponents.
基金supported bythe 111 Project under Grant No. B08004the major project of Ministry of Industry and Information Technology of the People's Republic of China under Grant No. 2010ZX03002-006China Fundamental Research Funds for the Central Universities
文摘Error Estimating Code (EEC) is a new channel coding method to estimate the Bit Error Rate (BER) information of the transmitted sequence. However, the estimated BER is not precise enough if the practical value of BER is high. A weighted EEC estimation method is proposed to improve the accuracy performance of BER estimation by classifying the raw estimation results into intervals and multiplying them by different coefficients separately. The applications of weighted EEC in modulation selection scheme and distributed video coding are discussed. Simulation results show that the EEC-based modulation selection method can achieve better performance at a cost of little redundancy and computation, and the EEC-based rate estimation method in distributed video coding can save the decoding time.
文摘HBO TV series–Game of Thrones has gone viral ever since its first release in 2011 and its soaring popularity among Chineseaudience has no doubt benefited from the"appropriate"E-C subtitles attached to it. This paper, through the analysis and discussion ofthe E-C subtitles of Game of Thrones from the perspective of Eco-translatology, demonstrates that the approach of Translation as Adap-tation and Selection(TAS) proves to be operational in subtitle translation, and gives further recommendations in the communicativetransformation of subtitle translation.
文摘On the framework of eco- translatology, this thesis presents an introduction of the novel Fortress Besieged, the author and the translation work, and then gives an analysis of the translator's adaptation and selection of the translational eco-environment.
文摘The importance of an interdisciplinary investigation into the translation of publicity texts cannot be overestimated at a time when the role of international communication grows rapidly,which in turn pushes the development of globalization.Ecotranslatology takes the concept of"adaptation/selection"of Darwin’s Evolution Theory as its theoretical foundation,focusing on the integrity of the translation ecosystem,making a novel description and interpretation to the nature,process,standard,principles,methods of translation and translation phenomena from the perspective of Eco-translatology.Though the construct of the theory keeps expanding,there is still a lack of systematic discussion on translation activities with focus on the integrity and harmony in Eco-translatology.This study therefore aims to promote the need of researching publicity text translation from an Ecotranslatological perspective through the review of the existing literature in this field.
