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交互式电视返回信道特性的研究对交互式电视的研制至关重要。介绍了交互式电视网的结构和返回信道的特点，分析了返回信道中干扰源的类型并讨论返回信道中最好的调制方法和多路访问技术
Research on the characteristics of interactive television return channel is crucial for the development of interactive television. Introduced the structure of the interactive television network and the characteristics of the return channel, analyzed the types of interference sources in the return channel and discussed the best modulation methods and multiple access techniques in the return channel