摘要
为延长无线传感器网络(WSN)的生命周期,引入了协作多输入多输出(MIMO)技术。分析了在垂直贝尔实验室分层空时(VBLAST)结构和正交幅度调制(QAM)情况下,使协作MIMO系统能量损耗达到最小的模式。仿真结果表明,不同的协作MIMO系统最小适用距离并不相同;最佳协作MIMO系统比传统单输入单输出(SISO)系统可节省90%的能量。
A cooperation multiple-input multiple-output (MIMO) technology is proposed to extend the lifetime of wireless sensor networks. Analyze the model that has the minimum energy consumption in cooperation MIMO system under the vertical Bell lab's layered space-time coding (V-BLAST) structure and quadrature amplitude modulation (QAM) scenarios. Simulation results show that different cooperation MIMO system has different applied distance. Moreover, the best cooperation MIMO system can save over ninety percent of energy compared with traditional single-input single-output (SISO) system.
出处
《西安科技大学学报》
CAS
北大核心
2008年第4期784-788,共5页
Journal of Xi’an University of Science and Technology
基金
西安科技大学科研培育基金项目(200620)