本文研究了通过改变符号率及调制电平的方法实现的自适应调制系统。
In this paper, an adaptive modulation system controlled by changing the symbol rate and modulation level is proposed.
一旦查出问题后，调制解调器需要重新连接和测试，来验证正常的传输电平。
Once the problem is fixed, the modem is reconnected and tested to verify normal transmit levels.
其它特性包括：集成缓冲用来驱动基准电压，以及集成完全差动放大器用来缓冲调制器输入并进行电平转换。
Other features include an integrated buffer to drive the reference as well as a fully differential amplifier to buffer and level shift the input to the modulator.
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