• Spread spectrum, frequency-hopped, which generates many codes over a wide frequency band.

    频带产生许多代码

    youdao

  • Therefore, spectrum spread systems lose efficiency when dealing with wide band interference.

    因此扩频系统面对宽带非平稳干扰时,抑制效果十分有限。

    youdao

  • Based on the model, the BER Bit Error Ratio performance is analyzed for narrow-band modulation and wide-band spread -spectrum modulation of coherent PSK Phase Shift Key...

    结果表明移动卫星信道存在多径阴影现象使系统的误码性能恶化,而采用宽带扩频调制则可极大改善系统的性能。

    youdao

  • Based on the model, the BER Bit Error Ratio performance is analyzed for narrow-band modulation and wide-band spread -spectrum modulation of coherent PSK Phase Shift Key...

    结果表明移动卫星信道存在多径阴影现象使系统的误码性能恶化,而采用宽带扩频调制则可极大改善系统的性能。

    youdao

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