基于软件无线电的高清音频传输系统设计  

Software radio based HD audio transmission system design

作　　者：彭建森 马英[1,2] 刘忠成[3] PENG Jiansen;MA Ying;LIU Zhongcheng(School of Physics and Electronic Information Engineering,Qinghai Minzu University,Xining 810007,China;National Experimental Teaching Demonstration Center for Communication Engineering,Qinghai Minzu University,Xining 810007,China;Wuhan Easystart Technology Co.,Ltd.,Wuhan 430205,China)

机构地区：[1]青海民族大学物理与电子信息工程学院,青海西宁810007 [2]青海民族大学通信工程国家级实验教学示范中心,青海西宁810007 [3]武汉易思达科技有限公司,湖北武汉430205

出　　处：《现代电子技术》2024年第21期13-20,共8页Modern Electronics Technique

基　　金：青海省科技厅自然科学基金项目(2023-ZJ-950Q)。

摘　　要：在5G时代背景下,随着高清音频传输需求的不断增长,对于传输速率、延迟、稳定性等方面提出了更高的要求。为了应对更高的传输需求,文中基于软件无线电技术,使用eLabRadio软件和eNodeX 10F-DS硬件设备设计实现了一个高清音频传输系统。该系统采用CVSD编码、卷积和差分组合信道编码、BPSK调制等关键技术,构建了无硬件仿真、自发自收和一发一收三种不同工作模式的音频传输系统。经过测试验证可知:当发射衰减为10 dB、接收增益为50 dB时,该系统能够在0~6 m距离内实现高质量、低延迟的音频文件传输,抗干扰能力强;同时固定发送设备与接收设备之间的距离为2 m、发送衰减为10 dB,当接收增益为30 dB和在50~60 dB范围内时,音频的传输效果较好。With the growing demand for HD audio transmission,higher requirements are put forward for transmission rate,latency and stability in the era of 5G.In this paper,an HD audio transmission system based on software radio technology is designed with software eLabRadio and hardware device eNodeX 10F-DS,so as to meet with higher transmission requirements.In this system,the key technologies such as CVSD(continuously variable slope delta)modulation coding,convolutional and differential combined channel coding,BPSK(binary phase-shift keying)modulation are adopted.In addition,an audio transmission system with three different working modes,including hardware-free emulation,self-transmission and self-reception,and one-transmission and one-reception,are constructed.It can be seen after testing and verification that the designed system can realize high-quality and low-latency audio file transmission within the distance of 0~6 meters when the transmit attenuation is 10 dB and the receiving gain is 50 dB,and has strong anti-interference ability.Meanwhile,when the distance between fixed transmitter and receiving equipment is 2 meters,the transmit attenuation is 10 dB,and the receiving gain is 30 dB or is within the range of 50~60 dB,the transmission effect of audio is better.

关 键 词：5G 高清音频传输 软件无线电技术 eLabRadio软件 eNodeX 10F-DS硬件设备 抗干扰能力 

分 类 号：TN911-34[电子电信—通信与信息系统]