摘要
Multi-user detection is one of the important technical problems for moderncommunications. In the field of quantum communication, the multi-access channel onwhich we apply the technology of quantum information processing is still an openquestion. In this work, we investigate the multi-user detection problem based on thebinary coherent-state signals whose communication way is supposed to be seen as aquantum channel. A binary phase shift keying model of this multi-access channel isstudied and a novel method of quantum detection proposed according to the conclusionof the quantum measurement theory. As a result, the average interference betweendeferent users is presented and the average error probability of the quantum detection isderived theoretically. Finally, we show the maximum channel capacity of this effectivedetection for a two-access quantum channel.
基金
Supported by the National Natural Science Foundation of Chinaunder Grant Nos. 61501247, 61373131 and 61702277
the Six Talent Peaks Project ofJiangsu Province (Grant No. 2015-XXRJ-013)
Natural Science Foundation of JiangsuProvince (Grant No. BK20171458)
the Natural Science Foundation of the HigherEducation Institutions of Jiangsu Province (China under Grant No. 16KJB520030)
theNUIST Research Foundation for Talented Scholars under Grant Nos. 2015r014, PAPDand CICAEET funds.
