Ingress noise has great proportion in sorts of noise on upstream channel in HFC.
在HF C网络回传通路各类噪声中，输入噪声占有相当大的比重。
CDMA technology is widely used in LEO satellites communication because of many merits offered by CDMA system such as suppression of ingress noise, flexibility of bandwidth assignment and the security.
CDMA作为一种抗噪声强、带宽分配灵活，保密性强的传输接入方式被广泛的应用于民用、军用低轨卫星通信系统中。
CDMA technology is widely used in LEO satellites communication because of many merits offered by CDMA system such as suppression of ingress noise, flexibility of bandwidth assignment and the security.
CDMA作为一种抗噪声强、带宽分配灵活，保密性强的传输接入方式被广泛的应用于民用、军用低轨卫星通信系统中。
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