采用多通道信道均衡的调频水声语音通信
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摘要
与数字语音通信体制相比,调频语音通信技术具有易于实现、抗干扰能力强等优点。在低信噪比、严重多径干扰条件下调频语音通信性能受到较大影响。针对蛙人、潜器上行语音通信需求,采用在正交解调的调频语音通信系统中引入多通道均衡处理抑制码间干扰和信道衰落的影响,同时基于客观语音质量评估方法进行调频水声语音通信质量评估。海试结果验证了该方案的有效性。
Compared with the digital voice communication system,Frequency Modulation( FM) voice communication technology has the advantages of easy realization and strong anti-interference ability. But in low signal-to-noise ratio and severe multipath interference condition,FM voice communication performance is greatly affected. For the needs of voice communications on the frogmen and the submarine,a multichannel equalization process was introduced in the FM voice communication system using orthogonal demodulation to suppress the effects of inter-symbol interference and channel fading. At the same time,we use the perceptual speech quality assessment( PESQ) method to evaluate the quality of FM voice communication. The sea trial results verify the effectiveness of the proposed scheme.
Compared with the digital voice communication system,Frequency Modulation( FM) voice communication technology has the advantages of easy realization and strong anti-interference ability. But in low signal-to-noise ratio and severe multipath interference condition,FM voice communication performance is greatly affected. For the needs of voice communications on the frogmen and the submarine,a multichannel equalization process was introduced in the FM voice communication system using orthogonal demodulation to suppress the effects of inter-symbol interference and channel fading. At the same time,we use the perceptual speech quality assessment( PESQ) method to evaluate the quality of FM voice communication. The sea trial results verify the effectiveness of the proposed scheme.
引文
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[3]惠俊英,生雪莉.水下声信道[M]. 2版.北京:国防工业出版社,2007.
[4] WOODWARD B,SARI H. Digital underwater acoustic voice communication[J]. IEEE Journal of Oceanic Engineering,1996,21(2):181-192.
[5]郭中源,陈岩,贾宁.水下数字语音通信系统的研究与实现[J].声学学报,2008,33(5):1-3.
[6]周跃海,江伟华,陈磊,等.采用时反和时频差分OFDM的水声语音通信方法[J].应用声学,2015(4):283-290.
[7]吴燕艺,李剑汶.采用时间反转的调频水声语音通信方法[J].厦门大学学报,2016,55(4):570-574.
[8]卜文强.基于TMS320C67X的水声语音通信系统研究与实现[D].厦门:厦门大学,2015.
[9]耿妍,张端金.自适应滤波算法综述[J].信息与电子工程,2008,6(4):315-320.
[10] ITU-T Rec. P. 861. Objective Quality Measurement of telephone-band Speech Coders[S]. Geneva:ITU,1998.
[11]赵斐,徐勇,成立新. PESQ及其应用[J].通信与计算机,2003(3):28-30.
[12]吴伯修,沈连丰.调频技术理论及新进展[M].北京:人民邮电出版社,1988:7-8.
[13]曾堃.多径信道下的调频水声语音通信技术研究[D].厦门:厦门大学,2015.
[14]陈启兴.通信原理[M].北京:国防工业出版社,2017.
[15]李剑汶,王小阳.浅海信道调频水声语音通信方法比较[J].舰船科学技术,2017,39(1):127-131.
[16]黄绍.基于PESQ估测模型的水声语音通信系统研究[D].厦门:厦门大学,2013.
[17] AZUBOGU A C O,NWALOZIE G C,IDIGO VE. Simulation evaluation of least mean square(LMS)adaptive beamforming algorithm for smart antennas[J]. The IUP Journal of Te,communications,2012,4(1):27-39.
[18] STOJANOVIC M,CATIPOVIC J,PROAKIS J G. Adaptive multichannel combining and equalization for underwater acoustic communications[J]. Journal of the Acoustical Society of America,1993,94(3):1621-1631.
[19]李晶,侯思祖. OFDM误码率性能分析与研究[J].微计算机信息,2006(7):261-264.
[2] KILFOYLE D B,BAGGER A B. The state of art in underwater acoustic telemetry[J]. IEEE. Journal of Oceanic.Eng,2005,25(1):4-27.
[3]惠俊英,生雪莉.水下声信道[M]. 2版.北京:国防工业出版社,2007.
[4] WOODWARD B,SARI H. Digital underwater acoustic voice communication[J]. IEEE Journal of Oceanic Engineering,1996,21(2):181-192.
[5]郭中源,陈岩,贾宁.水下数字语音通信系统的研究与实现[J].声学学报,2008,33(5):1-3.
[6]周跃海,江伟华,陈磊,等.采用时反和时频差分OFDM的水声语音通信方法[J].应用声学,2015(4):283-290.
[7]吴燕艺,李剑汶.采用时间反转的调频水声语音通信方法[J].厦门大学学报,2016,55(4):570-574.
[8]卜文强.基于TMS320C67X的水声语音通信系统研究与实现[D].厦门:厦门大学,2015.
[9]耿妍,张端金.自适应滤波算法综述[J].信息与电子工程,2008,6(4):315-320.
[10] ITU-T Rec. P. 861. Objective Quality Measurement of telephone-band Speech Coders[S]. Geneva:ITU,1998.
[11]赵斐,徐勇,成立新. PESQ及其应用[J].通信与计算机,2003(3):28-30.
[12]吴伯修,沈连丰.调频技术理论及新进展[M].北京:人民邮电出版社,1988:7-8.
[13]曾堃.多径信道下的调频水声语音通信技术研究[D].厦门:厦门大学,2015.
[14]陈启兴.通信原理[M].北京:国防工业出版社,2017.
[15]李剑汶,王小阳.浅海信道调频水声语音通信方法比较[J].舰船科学技术,2017,39(1):127-131.
[16]黄绍.基于PESQ估测模型的水声语音通信系统研究[D].厦门:厦门大学,2013.
[17] AZUBOGU A C O,NWALOZIE G C,IDIGO VE. Simulation evaluation of least mean square(LMS)adaptive beamforming algorithm for smart antennas[J]. The IUP Journal of Te,communications,2012,4(1):27-39.
[18] STOJANOVIC M,CATIPOVIC J,PROAKIS J G. Adaptive multichannel combining and equalization for underwater acoustic communications[J]. Journal of the Acoustical Society of America,1993,94(3):1621-1631.
[19]李晶,侯思祖. OFDM误码率性能分析与研究[J].微计算机信息,2006(7):261-264.