中文摘要：

针对传统的水声modem功耗高、成本高、传输速率低等问题,在保证水声通信性能的前提下,设计了一种低成本的水声modem。该设计中遵循＂以软代硬,硬件集成化＂原则,解决了目前水声通信系统只依赖专门硬件来实现调制与解调的难题,且因其控制简便易实现,省去了繁琐的外围电路搭建,从而降低了水声modem的成本。经过多项性能测试,结果表明,该设计在数据传输速率、可靠性等方面都具有良好的表现,适合水下无线传感器网络。

英文摘要：

Traditional underwater acoustic modem has characteristics of high power consumption,high cost and low transmission rate.So a low cost underwater acoustic modem is designed under guaranteeing the performance of underwater acoustic communication.Based on the principle that＂software replace hardware and hardware be highly integrated＂,the modem solves the current problem of underwater acoustic communication system which only rely on specialized hardware to achieve the modulation and demodulation.Furthermore,the cost of underwater acoustic modem is reduced because the control is easy to implement and elimination of the cumbersome external circuit.Several properties of the modem show that the design has a good performance in data transmission rate and reliability for underwater wireless sensor networks.