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以正交幅度调制为代表的正交调制技术在有线电视传输和ADSL(不对称数字用户线)中得到了广泛应用。介绍了两款典型的正交数字调制芯片,对其架构和性能作了对比分析,并预测了调制芯片的发展方向。
Orthogonal modulation modulation represented by orthogonal modulation in cable television transmission and ADSL (Asymmetric Digital Subscriber Line) has been widely used. Two typical Orthogonal Digital Modulation chips are introduced, their architecture and performance are compared, and the development direction of the modulation chip is predicted.