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A subspace-based blind channel estimator has been developed for space time coding orthogonal frequency division multiplexing (STC-OFDM) system with two transmit antennas and two receive antennas.
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摘要针对使用2个发射天线和2个接收天线并且采用循环前缀的空时编码正交频分复用系统(STC-OFDM)，提出了一种信道盲估计算法，并给出信道可被辨识的条件。 |
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A subspecies of the Atlantic sturgeon, Gulf sturgeons are found in the coastal rivers of the Gulf of Mexico.
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墨西哥湾鲟是大西洋鲟的一个亚种，存在于墨西哥湾沿河河流中。 |
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A substance added in small amounts to something else to improve, strengthen, or otherwise alter it.
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添加剂，添加物少量加入其他物质以使其提高、增强或改变的物质 |
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A substance added to another in relatively small amounts to impart or improve desirable properties or suppress undesirable properties.
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中义少量的物质加入其他物质中以加强或抑制所要的特性。 |
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A substance believed to maintain life indefinitely.
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长生不老药被认为可以使生命无限的物质 |
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A substance composed chiefly of the dung of sea birds or bats, accumulated along certain coastal areas or in caves and used as fertilizer.
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鸟粪一种主要由海鸟或蝙蝠的排泄物构成的物质，在某些海岸或山洞中不断积累，用做肥料 |
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A substance containing chemical agents or abrasive particles and applied to smooth or shine a surface.
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上光剂；擦亮剂含有化学媒质或粗糙微粒的一种物质，被用来打光或擦亮一个表面 |
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A substance formed as a necessary stage in the manufacture of a desired end product.
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中间产物在生产预计的最终产品的必需阶段中形成的物质 |
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A substance or an agent that causes two or more objects or parts to cohere.
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黏合剂使两个或多个对象或部分连结起来的物品或媒介 |
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A substance similar to that found in the cough syrups is found in hot red pepper. Use red (cayenne) pepper with caution - it can irritate your tummy.
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它含有类似于咳嗽药水的物质。但要小心使用，因为它会刺激胃部引起不适。 |
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A substance that destroys or inhibits the metabolic action of a vitamin.
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抗维生素一种破坏或抑制维生素的新陈代谢功能的物质 |
