With the rise of wireless image transmission,related transmission technologies have also been greatly developed.However,in complex wireless communication environments such as mountains,sea surfaces,and densely populated urban areas,WiFi,ZigBee,4G/5G,etc.have poor transmission performance,while the coding orthogonal frequency division multiplexing(COFDM)technology has become a research hotspot due to its high transmission rate,strong anti-interference ability,etc.To meet the performance requirements of high transmission rate,low latency,and high reliability in complex wireless communication environments for wireless image transmission,and to shorten the design cycle of wireless image transmission communication products,this paper analyzed and studied the COFDM technology and built a COFDM wireless image transmission system based on the general hardware peripheral USRP and software radio platform GNU Radio.The system uses Gstreamer technology to collect and process the video stream from the camera and achieves real-time transmission of 720 P video images at a video transmission rate of 4 000 Kbit/s.The results show that the system has achieved long-term and stable wireless video real-time transmission,which demonstrates the flexibility of the system design and the effectiveness of the scheme design.
关键词
软件无线电/COFDM/无线图传/实时传输/GNU/Radio
Key words
software defined radio/COFDM/wireless video transmission/real-time transmission/GNU Radio
维普
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