水声OFDM通信系统的Turbo均衡
首发时间:2018-01-24
摘要:水声信道的复杂性使得其高速率的数据传输成为了水声通信技术的重要研究课题之一。正交频分复用技术(Orthogonal Frequency Division Multiplexing,OFDM)优点是频谱效率高,能够有效的对抗多径效应,是主要的高速数据传输技术,将其应用于水声通信中是研究的热点之一。Turbo均衡技术与传统均衡方式不同,它将译码部分和均衡部分结合,能够充分利用已知信息,是一种迭代的均衡方式,使得系统性能得到提高。经过仿真实验表明将Turbo均衡技术应用于水声OFDM系统,可以有效降低误码率,提高系统的通信性能。
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Turbo equalization for UWA OFDM Communication Systems
Abstract:The complexity of underwater acoustic channel makes the high speed data transmission become one of the most important research topics in underwater acoustic (UWA) communication technology. Orthogonal Frequency Division Multiplexing (OFDM) technology has the advantages of high spectral efficiency and can effectively resist the multipath effect. It is the main high-speed data transmission technology, and its application in UWA communication is one of the hot spots.The known information can be full used by The Turbo equalization technique which combines equalization and decoding. The bit error rate can be reduced by the cyclic utilization of soft information in the turbo equalization. The simulation experiment shows that the application of Turbo equalization technique for the UWA OFDM system can effectively improve the communication performance of the system.
Keywords: UWA communication OFDM Turbo equalization
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