摘要
空间调制系统作为多输入多输出技术(Multi-input Multi-output,MIMO)的一种,优点是在减少多天线方案的复杂度和成本的同时,始终能够保证较高的数据传输速率。在每个信道使用间隙下,仅使用一根选定的天线(称为活动天线)发送数据信号,并且活动天线空间位置作为数据传输的附加维度。然而,空间调制技术的分析和设计依然面临许多挑战,编码空间调制方案就是其中一种。针对编码空间调制方案,重点论述了Trellis码、BMST码、LDPC码以及多元LDPC码等信道编码空间调制方案,并且分析了这几种方案的特点以及它们在MIMO中的应用。
As a developed technique of MIMO communication systems,spatial modulation techniques aim to reduce the complexity and cost of multi-antenna schemes while maintaining a high data transmission rate.With SM,information bits to be transmitted are divided into two parts:one part is used to select a signal from the modulation constellation and the other part is mapped onto a transmit antenna index,where only one antenna is active to send a modulated symbol at each time slot.Nevertheless,there are also many challenges in the analysis and design of SM schemes,and the design of coded spatial modulation(CSM)schemes is one of them.In this paper,Trellis coded spatial modulation schemes,spatial modulation with BMST transmission,bit-interleaver coded spatial modulation,and LDPC-coded spatial modulation schemes are introduced.Besides,we also introduce their features and applications in MIMO.
作者
冯丹
刘孟孟
白宝明
FENG Dan;LIU Mengmeng;BAI Baoming(School of Communications and Information Engineering,Xi’an University of Posts&Telecommunications,Xi’an 710121,China;State Key Laboratory of Integrated Services Networks,Xidian University,Xi’an 710071,China)
出处
《无线电通信技术》
2020年第1期37-43,共7页
Radio Communications Technology
基金
陕西省重点研发计划项目(2018ZDCXL-GY-04-05)~~
