摘要
随着纳米技术的不断发展与新型纳米材料石墨烯研究的不断深入,作为纳米网络通信技术的太赫兹通信成为无线通信的研究热点,然而现阶段对太赫兹通信中多输入多输出(MIMO)机制的研究较少。为此,采用离散化的数学方法,以接收端获取信道信息的遍历容量模型为基础,结合太赫兹信道的分子吸收噪声与传输路径损失,提出一种适用于太赫兹通信的MIMO信道模型。对建立的MIMO信道模型进行仿真与分析,结果表明,与单一太赫兹信道相比,太赫兹通信中的MIMO信道具有更高的信道容量与传输比特率。
With the development of nanotechnology and the graphene-based nano materials,terahertz communication,the preferred communication technology of nano netw ork is becoming the new hotspot for w ireless communication.How ever,the performance of M ultiple Input M ultiple Output( M IM O) channel in terahertz band is still unknow n. A novel M IM O channel model in terahertz communications is proposed by using a discrete mathematical method. Combining the molecular absorption and the path loss in terahertz band,a model of channel capacity is presented based on the channel state information at the receiver. M IM O channel model in terahertz communications is verified in the simulation. Result show s that the M IM O channel in terahertz communication can support higher capacity and transmission bit-rates than the single terahertz channel.
出处
《计算机工程》
CAS
CSCD
北大核心
2015年第4期125-128,共4页
Computer Engineering
基金
国家自然科学基金资助项目(61379123)
国家"十二五"科技支撑计划基金资助项目(2012BAD10B01)
浙江省教育厅科技基金资助项目(Y201431815)
关键词
太赫兹通信
信道模型
多输入多输出
遍历容量
无线通信
纳米网络
terahertz communication
channel model
Multiple Input Multiple Output(MIMO)
traversal capacity
w ireless communication
nano netw ork