调制解调技术一直是光无线通信领域中的研究热点之一。
The technology of modulation and demodulation is one of the hotspot research in Optical Wireless Communication.
因此，非线性信道的均衡技术就成为高速无线通信领域的一个研究热点。
So, the research on the nonlinear channel equalization is now a hot spot in the high-rated wireless communication area.
在当今无线通信领域中，一个新兴的结构趋势就是发射信号的直接射频技术。
In the field of today's wireless communication, a new trend is the technology of direct RF modulation.
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