Diffusive molecular communications (DiMC) have recently gained attention as a candidate for nano- to micro- and macro-scale communications due to its simplicity and energy efficiency. As signal propagation is solely enabled by Brownian motion mechanics, DiMC faces severe inter-symbol interference (ISI), which limits reliable and high data-rate communications. Herein, recent literature on DiMC performance enhancement strategies is surveyed; key research directions are identified. Signaling design and associated design constraints are presented. Classical and novel transceiver designs are reviewed with an emphasis on methods for ISI mitigation and performance-complexity tradeoffs. Key parameter estimation strategies such as synchronization and channel estimation are considered in conjunction with asynchronous and timing error robust receiver methods. Finally, source and channel coding in the context of DiMC is presented.

翻译：由于信号传播完全由布朗运动力学所促成,DiMC面临严重的符号间干扰(ISI),这限制了可靠和高数据率的通信;在这里,调查了最近关于DiMC增强性能战略的文献;确定了关键的研究方向;介绍了信号设计和相关的设计限制;审查了传统和新颖的收发器设计,重点是国际空间研究所的减缓方法和性能兼容性权衡方法;将同步和频道估计等关键参数估计战略与无同步和定时误差的稳健接收器方法结合起来考虑;最后,介绍了DiMC背景下的源码和频道编码。