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在国外,移动通信发展得很快,频谱很紧张,故单边带移动通信的呼声很高,不久的将来我国也必然会出现类似的情况。单边带要应用于甚高频甚至于超高频频段,必需插入导频。本文首先介绍了单边带的优点和几个有争议的问题,得出单边带是用于移动通信的一种好的调制方式的结论。然后主要就几种单音导频的插入方案进行了比较,并提出了部分音频频谱倒置的带内单音导频方案。
Abroad, mobile communications have developed rapidly and the spectrum is very tight. Therefore, the voice of mobile communications in the single band is very high. In the near future, similar situations in our country are bound to occur. Single-sideband to be used in VHF or even UHF band, the pilot must be inserted. This paper first introduces the advantages of single-sideband and several controversial issues, and concludes that single-sideband is a good modulation scheme for mobile communications. Then we mainly compared the insertion schemes of several kinds of monophonic pilot and put forward some in-band monophonic pilot scheme with some audio spectrum inversion.