从多输入多输出(multiple-input and multiple-output,MIMO)系统所设计的Alamouti码中得到启发,针对在无线协同信道之上的同步协作中继系统提出了一种新的通信方案。为了在大中断率和低成对误码率(PEP)的情况下能有效地传送信号,源天线...从多输入多输出(multiple-input and multiple-output,MIMO)系统所设计的Alamouti码中得到启发,针对在无线协同信道之上的同步协作中继系统提出了一种新的通信方案。为了在大中断率和低成对误码率(PEP)的情况下能有效地传送信号,源天线采用功率分配波束形成技术,中继节点采用放大转发(amplify and forward,AF)技术。研究和仿真表明,对给定效率R,所提出的模型与以前的通信方案尤其是广播通信模型相比,在中断率和成对误码率上都有明显的改善。这一发现可能会对未来的同步协作中继通信系统的设计有显著的影响。展开更多
Three kinds of quantum relay communication models are proposed,i.e.,the quantum single relay model,quantum serial multi-relay model and quantum parallel multi-relay model.The channel capacities of those three kinds of...Three kinds of quantum relay communication models are proposed,i.e.,the quantum single relay model,quantum serial multi-relay model and quantum parallel multi-relay model.The channel capacities of those three kinds of systems are analyzed with the theory of quantum Markov trace-preserving process and the generalized theory of simple multi-hop channel in quantum system.Motivated by the quantum Fano inequality,the lower bounds of that channel capacities are derived.The illustration and simulation present the trends of the lower bounds on the channel capacities of different quantum relay systems based on the depolarizing noisy channel.展开更多
文摘从多输入多输出(multiple-input and multiple-output,MIMO)系统所设计的Alamouti码中得到启发,针对在无线协同信道之上的同步协作中继系统提出了一种新的通信方案。为了在大中断率和低成对误码率(PEP)的情况下能有效地传送信号,源天线采用功率分配波束形成技术,中继节点采用放大转发(amplify and forward,AF)技术。研究和仿真表明,对给定效率R,所提出的模型与以前的通信方案尤其是广播通信模型相比,在中断率和成对误码率上都有明显的改善。这一发现可能会对未来的同步协作中继通信系统的设计有显著的影响。
基金Supported by the National Natural Science Foundation of China under Grant No.60902044Ph.D.Programs Foundation of Ministry of Education of China under Grant No.20090162120070+2 种基金Postdoctoral Science Foundation of China under Grant No.200801341State Key Laboratory of Advanced Optical Communication Systems and Networks under Grant No.2008SH01in part by the Second stage of Brain Korea 21 programs,Chonbuk National University,Korea
基金Supported by the National Natural Science Foundation of China under Grant No.60902044the Program for New Century Excellent Talents in University of Ministry of Education of China(NCET-11-0510)+5 种基金the Hunan Provincial Innovation Foundation For Postgraduate under Grant No.CX2011B087the State Scholarship Fund organized by the China Scholarship Council under Grant No.2011637096Excellent Doctoral Dissertation Fund of Central South University under Grant No.2011ybjz030WCU R32-2010-000-20014-0(Korea)FR 2010-0020942(Korea)MEST 2012-002521(NRF Korea)
文摘Three kinds of quantum relay communication models are proposed,i.e.,the quantum single relay model,quantum serial multi-relay model and quantum parallel multi-relay model.The channel capacities of those three kinds of systems are analyzed with the theory of quantum Markov trace-preserving process and the generalized theory of simple multi-hop channel in quantum system.Motivated by the quantum Fano inequality,the lower bounds of that channel capacities are derived.The illustration and simulation present the trends of the lower bounds on the channel capacities of different quantum relay systems based on the depolarizing noisy channel.
