| 摘要: |
| 分析了地面移动台（GMR）的核心波形架构和体制，结合其在军事上的应用发展趋势，给出了宽带战术组网波形物理层解决方案，并剖析了基于正交频分复用（OFDM）的物理层波形的两个核心技术。首先，在峰均比抑制方面，提出基于凸优化集理论，优化的内点算法求解方式解决了传统的迭代限幅滤波技术需要迭代次数高的问题;另一方面，采用基于非统计信息的信道估计方法替代原有的基于最小均方误差(MMSE)的一类方法，仿真结果表明其性能与MMSE基本相当，却避免了计算信道统计信息及矩阵求逆过程中的大量复杂运算。在信道模型下的仿真计算结果表明，提出的物理层方案及关键技术的解决方法具有良好的性能与实用性。 |
| 关键词: 地面移动台 宽带网络波形 正交频分复用 信道估计 峰均比抑制 |
| DOI： |
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| 基金项目:中国人民公安大学高校基本科研业务费项目（2016JKF01212） |
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| Solution to tactical wideband network waveform physical layer |
| YAN Jinghua,HOU Yi |
| () |
| Abstract: |
| This paper analyzes the core architecture and system of groud mobile radio(GMR) waveform,presents the tactical wideband network waveform(WNW) physical layer scheme in accordance with its military application trend,and discusses two key technology of physical layer waveform based on orthogonal frequency division multiplexing(OFDM).First,for peak-to-average power ratio(PAPR) suppression,the problem of traditional iterative clipping and filtering technique requiring a high number of iterations is solved by interior-point optimization algorithm based on raised convex optimization theory.Second,the channel estimation technology based on non-statistical information is used to replace the original minimum mean squared error(MMSE) methods.Simulation results show that the performance of new method is roughly equal to that of MMSE method,but it avoids calculating the channel statistics and matrix inversion with a large number of complex calculations.The results of system simulation demonstrate the excellent performance and the validity of the scheme and solution to key technology. |
| Key words: ground mobile radio wideband network waveform(WNW) orthogonal frequency division multiplexing channel estimation PAPR suppression |
《电讯技术》编辑部 