The essence of the whole channel is customer satisfaction, the pursuit of customer experience, this is the ultimate goal. With the side of the mobile phone shopping boom intensified, with high-tech fusion of fashion r...The essence of the whole channel is customer satisfaction, the pursuit of customer experience, this is the ultimate goal. With the side of the mobile phone shopping boom intensified, with high-tech fusion of fashion retailers also join the flay, demonstrating its ability to satisfy the consumers at any time and place, shopping demand, thus officially announced the full channel retail era. La Chapelle is a clothing enterprise sales in Intemet plus the tide of the times, combined with the characteristics of innovation, a new sales model, namely ＂seamless＂ full channel sales model. Through the whole channel： business combination of traditional business model, the whole direct： online and offline synchronization services, new competition： the O2O model provides a three-dimensional three-dimensional services constitute the innovation. This paper mainly introduces La Chapelle＇s full channel mode analysis to get the full channel mode successfully, and implicit in the crisis enterprise development of this mode, at the same time, several companies to address the challenges of decision-making is also introduced, finally is a summary.展开更多
This paper describes a full channel TV modulator for all TV systems, which has been developed successfully. It employs advanced technique such as PLL frequency synthesizer with microwave integrated circuit, and wideba...This paper describes a full channel TV modulator for all TV systems, which has been developed successfully. It employs advanced technique such as PLL frequency synthesizer with microwave integrated circuit, and wideband microstrip VCO and digital-analog combined integrated circuits. The key technique of the modulator is settled successfully. All the specifications of the modulator agree with Technical Standard of China, which are tested by the authority of China.展开更多
Relay in full-duplex(FD) mode can achieve higher spectrum efficiency than that in half-duplex mode,while it is crucial to suppress relay self-interference to ensure transmission quality which requires instantaneous ch...Relay in full-duplex(FD) mode can achieve higher spectrum efficiency than that in half-duplex mode,while it is crucial to suppress relay self-interference to ensure transmission quality which requires instantaneous channel state information(CSI). In this paper,the channel estimation issue in FD amplify-andforward relay networks is considered,where the training-based estimation technique is adopted. Firstly,the least square(LS) estimation is implemented to obtain composite channel coefficients of source-relay-destination(SRD) channel and relay loop-interference(LI) channel in order to assist destination in performing data detection. Secondly,both LS and maximum likelihood estimation methods are utilized to perform individual channel estimation aiming at supporting successive interference cancelation at destination. Finally,simulation results demonstrate the effectiveness of both composite and individual channel estimation,and the presented ML method can achieve lower MSEs than LS solution.展开更多
文摘The essence of the whole channel is customer satisfaction, the pursuit of customer experience, this is the ultimate goal. With the side of the mobile phone shopping boom intensified, with high-tech fusion of fashion retailers also join the flay, demonstrating its ability to satisfy the consumers at any time and place, shopping demand, thus officially announced the full channel retail era. La Chapelle is a clothing enterprise sales in Intemet plus the tide of the times, combined with the characteristics of innovation, a new sales model, namely ＂seamless＂ full channel sales model. Through the whole channel： business combination of traditional business model, the whole direct： online and offline synchronization services, new competition： the O2O model provides a three-dimensional three-dimensional services constitute the innovation. This paper mainly introduces La Chapelle＇s full channel mode analysis to get the full channel mode successfully, and implicit in the crisis enterprise development of this mode, at the same time, several companies to address the challenges of decision-making is also introduced, finally is a summary.
文摘This paper describes a full channel TV modulator for all TV systems, which has been developed successfully. It employs advanced technique such as PLL frequency synthesizer with microwave integrated circuit, and wideband microstrip VCO and digital-analog combined integrated circuits. The key technique of the modulator is settled successfully. All the specifications of the modulator agree with Technical Standard of China, which are tested by the authority of China.
基金supported in part by the National High Technology Research and Development Program of China(Grant No.2014AA01A707)the Beijing Natural Science Foundation(Grant No.4131003)+1 种基金the Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP)(Grant No.20120005140002)the Key Program of Science and Technology Development Project of Beijing Municipal Education Commission of China (KZ201511232036)
文摘Relay in full-duplex(FD) mode can achieve higher spectrum efficiency than that in half-duplex mode,while it is crucial to suppress relay self-interference to ensure transmission quality which requires instantaneous channel state information(CSI). In this paper,the channel estimation issue in FD amplify-andforward relay networks is considered,where the training-based estimation technique is adopted. Firstly,the least square(LS) estimation is implemented to obtain composite channel coefficients of source-relay-destination(SRD) channel and relay loop-interference(LI) channel in order to assist destination in performing data detection. Secondly,both LS and maximum likelihood estimation methods are utilized to perform individual channel estimation aiming at supporting successive interference cancelation at destination. Finally,simulation results demonstrate the effectiveness of both composite and individual channel estimation,and the presented ML method can achieve lower MSEs than LS solution.
