Based on the Overlapped Multiplexing Principle[12],a frequency domain OVFDM(Overlapped Frequency Domain Multiplexing) Coding is proposed.By the data weighted shift overlapped version of any band-limited Multiplexing T...Based on the Overlapped Multiplexing Principle[12],a frequency domain OVFDM(Overlapped Frequency Domain Multiplexing) Coding is proposed.By the data weighted shift overlapped version of any band-limited Multiplexing Transfer Function H(f) the coding gain and spectral efficiency are both achieved.The heavier the overlap of the data weighted Multiplexing Transfer Function H(f),the higher the coding gain and spectral efficiency as well as the closer the output to the optimum complex Gaussian distribution.The bit error probability performance is estimated.The time domain OVTDM(Overlapped Time Domain Multiplexing) Coding,the dual of OVFDM in time domain is incidentally proposed as well.Both theoretical analysis and testified simulations show that OVFDM(OVTDM) is suitable for high spectral efficiency application and its spectral efficiency is only roughly linear to SNR rather than the well-known logarithm to SNR.展开更多
Traditional international trade theories seldom consider the pursuit of power as maintaining and enlarging a country's relative strength in the process of interstate competition.However,in the context of great pow...Traditional international trade theories seldom consider the pursuit of power as maintaining and enlarging a country's relative strength in the process of interstate competition.However,in the context of great power competition,the importance of power in the trade between advanced and latecomer countries has become more pronounced.Given this situation,we can establish a tractable and generalized international economic political framework for analyzing great power competition by introducing the power factor into classic two-country trade theory,treating the absolute welfare and relative welfare emphasized by economics and political science respectively as actors'dual objectives,and making use of game theory methods.It can be found that in a two-country game composed of an advanced and a latecomer country,the latter will prefer a strategy of"enhancing its own strength and rectifying its own weak points,"while the former will favor a strategy that""worsens the other's weak points and enhances the other's strengths."Once the technological gap that determines comparative advantage narrows,the advanced country will tend to totally suppress the latecomer and even"decouple"from it.展开更多
基金The NNSF(National Nature Science Foundation)of China for their continuously long term support by key projects
文摘Based on the Overlapped Multiplexing Principle[12],a frequency domain OVFDM(Overlapped Frequency Domain Multiplexing) Coding is proposed.By the data weighted shift overlapped version of any band-limited Multiplexing Transfer Function H(f) the coding gain and spectral efficiency are both achieved.The heavier the overlap of the data weighted Multiplexing Transfer Function H(f),the higher the coding gain and spectral efficiency as well as the closer the output to the optimum complex Gaussian distribution.The bit error probability performance is estimated.The time domain OVTDM(Overlapped Time Domain Multiplexing) Coding,the dual of OVFDM in time domain is incidentally proposed as well.Both theoretical analysis and testified simulations show that OVFDM(OVTDM) is suitable for high spectral efficiency application and its spectral efficiency is only roughly linear to SNR rather than the well-known logarithm to SNR.
文摘Traditional international trade theories seldom consider the pursuit of power as maintaining and enlarging a country's relative strength in the process of interstate competition.However,in the context of great power competition,the importance of power in the trade between advanced and latecomer countries has become more pronounced.Given this situation,we can establish a tractable and generalized international economic political framework for analyzing great power competition by introducing the power factor into classic two-country trade theory,treating the absolute welfare and relative welfare emphasized by economics and political science respectively as actors'dual objectives,and making use of game theory methods.It can be found that in a two-country game composed of an advanced and a latecomer country,the latter will prefer a strategy of"enhancing its own strength and rectifying its own weak points,"while the former will favor a strategy that""worsens the other's weak points and enhances the other's strengths."Once the technological gap that determines comparative advantage narrows,the advanced country will tend to totally suppress the latecomer and even"decouple"from it.
