This paper presents principle of the effects of multipath propagation with its effects on low elevation angle tracking.

介绍多径效应产生的机理及对低仰角跟踪的影响。

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Multicarrier modulation is a form of parallel data transmission, which is efficient to reduce the detrimental effects of multipath fading.

多载波调制技术是一种并行数据处理方式，有效地对抗多径衰落，可以提高无线带限信道的数据传输速率。

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Transparent tone-in-band(TTIB) and feedforward signal regeneration(FFSR) is a technology to combat the effects of multipath propagation delay and doppler effect in wireless channels.

TTIB（透明带内导音）及FFSR（前馈信号再生）技术是一种可抗无线信道中多径时延及多谱勒频移引起的信号衰落的技术。

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As is to be expected, ordinary digital transmission is nowhere near robust enough to cope with the problems experienced by a mobile receiver, which can suffer from all sorts of doppler-shift effects and multipath radio interference as it moves around the place.

ECONOMIST: America is finally poised to get mobile television