一种基于相位旋转的短波发射分集技术研究

Research on HF Transmit Diversity Technology Based on Phase-Rotation

短波分集技术可以有效地提高短波通信的稳定性和可靠性。传统的利用空时编码的短波发射分集方案在实际的应用中存在发射天线数固定、发射天线之间协同组网难度大等问题。为了解决这些难点,论文提出了一种基于相位旋转的短波射分集方案。该方案可以有效地降低短波分集系统实际工程的实施要求,并通过仿真验证表明在短波“差”信道条件下,相比传统单发单收系统,该方案的误码性能也有显著提高。

HF diversity technology can effectively improve the stability and reliability of HF communication.The conventional HF transmit diversity scheme using space-time coding has some problems in practical application,such as fixed number of transmit antennas,difficulty of cooperative networking among transmit diversity antennas and so on.In order to solve these difficulties,a scheme of HF transmit diversity based on phase rotation is proposed in this paper.This scheme can effectively reduce the actual engi⁃neering implementation requirements of HF diversity system,and simulation verification shows that compared with the conventional single-transmit and single-receive system,the proposed scheme has significantly improved the performance of BER in CCIR-Poor channel.