【摘要】 下一代移动通信网络将有效覆盖各类智能设备、工业物联网及车联网等应用，对不同应用中信息传输的可靠性、安全性及传输时延提出了更高的要求。本文提出一种基于载波序号调制(Orthogonal frequency division multiplexing with index modulation, OFDM-IM)的多分集传输方案，可有效提升高可靠低时延通信(ultra Reliable and Low Latency Communication,uRLLC)场景中信息传输的可靠性及系统调制解调的计算复杂度。为了降低接收端的计算复杂度，本文提出一种用于多分集OFDM-IM系统的基于单个子载波计算的接收机算法，通过将基于子块计算过程分解为两步计算的方式来降低解调过程的计算复杂度。计算机仿真结果证明了本文提出的多分集OFDM-IM可以获得比传统单个符号多次重发方式获得发送分集增益更优的误比特性能。更多还原

【Abstract】 The next generation wireless communication system will supports all kinds of smart devices, industrial Internet of things, Internet of vehicles and other applications effectively, which puts forward higher requirements for the reliability, security and delay of information transmission. In this paper, we propose a novel multi diversity transmission scheme based on orthogonal frequency division multiplexing with index modulation(OFDM-IM), which can effectively improve the reliability in the information transmission. To reduce the computational complexity of the receiver, a low complexity subcarrier-wise detection algorithm, which is performed in two steps, is proposed to applications in ultra reliable and low delay communication(uRLLC) scenario. The simulation and numerical results have demonstrated that the proposed scheme can achieve better error performance compared with the traditional algorithm with single symbol multiple retransmission based on OFDM.更多还原