从通信系统的角度分析了汽车载波通信系统应该采取的策略，包括有信号的编码、解码，调制、解调，及接收端策略。

Analyzing the automobile carrier communication system from the communication point, including signal coding, decoding, modulating and demodulating and the receiver strategy.

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本文从提高无线移动传输系统传输速率和对抗多径的角度，研究OFDM调制技术在无线移动通信中的应用。

The thesis researches the application of OFDM modulating technology on mobile communication based on improving transfer effect in limited band broad and overcoming Multi_path fading.

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本文从变频器电动机组成的系统角度出发，研究逆变器开关方式与电机磁场的关系及SPWM调制下电动机磁场的生成特点。

The relations of SPWM inverter switching model and motor field, and motor field characteristics in this circumstance are re-searched.

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