一种基于实时信噪比估计动态切换信道均衡算法制造技术

本发明专利技术涉及短波通信技术领域，具体公开了一种基于实时信噪比估计动态切换信道均衡算法；该算法具体步骤为：1)在信道阶数已知的前提下，完成短波信道均衡中信道初始状态的估计；2)基于误差平方和最小准则和Shur算法，采用直接式信道均衡算法，估计数据信息；3)根据信道均衡的结果，实时估计当前帧码符号的信噪比；4)根据实时估计的信噪比结果，与预先设定的阈值进行比较，从而选取直接式或判决反馈式信道均衡算法，对接收数据进行均衡；5)均衡后的数据，进行后续判决、解交织和译码，恢复发送数据。该发明专利技术对调制解调器的硬件平台不产生影响，在相同通信数据率、误码率条件下，信噪比可改善1～2dB。

A dynamic switching channel equalization algorithm based on real time SNR estimation

The invention relates to the field of communication technology, in particular discloses a ratio estimation dynamic switching channel equalization algorithm based on signal to noise; the specific steps of the algorithm are as follows: 1) based on the order of channel known, complete channel estimation of HF channel equalization in the initial state; 2) based on the minimum squared error criterion and Shur the algorithm, using direct channel equalization algorithm, estimation of the data; 3) according to the results of channel equalization, the real-time estimation of the current frame code symbol SNR; 4) according to the real-time estimation of the signal-to-noise ratio results, compared with the preset threshold, so as to select the direct type or decision feedback equalization algorithm, for the balance of received data; 5) equalized data, for subsequent judgment, and de interleaving decoding, sending data recovery. The invention is not influenced on the modem hardware platform, communication at the same data rate and bit error rate under the condition of SNR improved from 1 to 2dB.

【技术实现步骤摘要】

【技术保护点】
１．一种基于实时信噪比估计动态切换信道均衡算法，其特征在于：该算法具体包括如下步骤：步骤１、在信道阶数已知的前提下，完成短波信道均衡中信道初始状态的估计；窄带短波信道基带模型遵循美军标ＭＩＬ－ＳＴＤ－１１０Ｂ定频传输模式，信号调制方式为８ＰＳＫ，码元速率为２４００Ｂａｕｄ，接收端利用发射端发送训练序列完成短波信道均衡；步骤２、基于误差平方和最小准则和Ｓｈｕｒ算法，采用直接式信道均衡算法，估计数据信息；步骤３、根据信道均衡的结果，实时估计当前帧码符号的信噪比；步骤４、根据实时估计的信噪比结果，与预先设定的阈值进行比较，从而选取直接式或判决反馈式信道均衡算法，对接收数据进行均衡；步骤５、均衡后的数...

【技术特征摘要】

【专利技术属性】
技术研发人员：周新力，田伟，吴海荣，周旻，金慧琴，宋斌斌，吴龙刚，孟庆萍，肖金光，
申请(专利权)人：中国人民解放军海军航空工程学院，
类型：发明
国别省市：37