Multi-user time-reversal STC-GFDMA for future wireless networks

作     者：Matthe, Maximilian Mendes, Luciano Leonel Gaspar, Ivan Michailow, Nicola Zhang, Dan Fettweis, Gerhard 

作者机构：Tech Univ Dresden Georg Schumann Str 11 D-01187 Dresden Germany Inst Nacl Telecomunicacoes Ave Joao de Camargo 510 BR-37540000 Santa Rita Do Sapucai MG Brazil 

出 版 物：《EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING》 (EURASIP无线通信与网络杂志)

年 卷 期：2015年第2015卷第1期

页      面：1页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：European Union [ICT-318555 '5GNOW', FP7 ICT-619555 'RESCUE'] Instituto Nacional de Telecomunicacoes (Inatel) Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) 

主　　题：Space-time coding Multi-user access Fading multipath channel Generalized frequency division multiple access 

摘      要：The challenges of future wireless networks imply that the physical layer of the next generation mobile communication system needs to be compatible with multiple-input multiple-output and allow a flexible multiple access scheme. Time-reversal space-time coding can be applied to a recent filtered multicarrier modulation scheme, named generalized frequency division multiplexing, to achieve a multiple-input multiple-output non-orthogonal multicarrier modulation with flexibility to address the requirements of future mobile networks. In this paper, the subcarriers of the physical layer block are shared between multiple users, allowing for an efficient and simple multiple access solution. A channel estimation technique that can simultaneously estimate channel frequency response and timing misalignment in generalized frequency division multiple access is described. The paper also shows that the knowledge of channel state information can improve the overall performance when used to schedule the subchannel distribution among the users. Symbol error rate performance analysis shows that the resources of the time-reversal space-time coding generalized frequency division multiple access block can be shared among users that have one or two transmit antennas simultaneously under frequency-selective time-variant channels.