Mobile payment is entering into an era of offline scenarios.According to the quarterly monitoring report about China’s Q2 third-party mobile payment released by Enfodesk on September 15,China’s thirdparty mobile pay...Mobile payment is entering into an era of offline scenarios.According to the quarterly monitoring report about China’s Q2 third-party mobile payment released by Enfodesk on September 15,China’s thirdparty mobile payment market scale reached RMB 3.5 trillion in Q2,up 22.81% month-on-month.The market generally keeps a stable structure—Alipay dominating the first position with an overwhelmingly market share of 74.31%,Mowed by Tenpay(WeChat pay and QQpurse)with a market share of 13.18% and Lakala with a market share of 6.3%.展开更多
To achieve robust communication in high mobility scenarios,an iterative equalization algorithm based on alternating minimization(AM)is proposed for the orthogonal time frequency space(OTFS)system.The algorithm approxi...To achieve robust communication in high mobility scenarios,an iterative equalization algorithm based on alternating minimization(AM)is proposed for the orthogonal time frequency space(OTFS)system.The algorithm approximates the equalization problem to a convex function optimization problem in the real-valued domain and solves the problem iteratively using the AM algorithm.In the iterative process,the complexity of the proposed algorithm is reduced further based on the study of the cyclic structure and sparse property of the OTFS channel matrix in the delay-Doppler(DD)domain.The new method for OTFS is simulated and verified in a high-speed mobile scenario and the results show that the proposed equalization algorithm has excellent bit error rate performance with low complexity.展开更多
文摘Mobile payment is entering into an era of offline scenarios.According to the quarterly monitoring report about China’s Q2 third-party mobile payment released by Enfodesk on September 15,China’s thirdparty mobile payment market scale reached RMB 3.5 trillion in Q2,up 22.81% month-on-month.The market generally keeps a stable structure—Alipay dominating the first position with an overwhelmingly market share of 74.31%,Mowed by Tenpay(WeChat pay and QQpurse)with a market share of 13.18% and Lakala with a market share of 6.3%.
基金supported by the 54th Research Institute of China E lectronics Technology Group Corporation(SKX212010007)。
文摘To achieve robust communication in high mobility scenarios,an iterative equalization algorithm based on alternating minimization(AM)is proposed for the orthogonal time frequency space(OTFS)system.The algorithm approximates the equalization problem to a convex function optimization problem in the real-valued domain and solves the problem iteratively using the AM algorithm.In the iterative process,the complexity of the proposed algorithm is reduced further based on the study of the cyclic structure and sparse property of the OTFS channel matrix in the delay-Doppler(DD)domain.The new method for OTFS is simulated and verified in a high-speed mobile scenario and the results show that the proposed equalization algorithm has excellent bit error rate performance with low complexity.
