QAM (Quadrature Amplitude modulation) has been widely used in various digital communication systems due to its high modulation efficiency.
正交幅度调制(QAM)具有较高的调制效率，被广泛应用于各种数字通信系统中。
In digital communication systems, digital receiver has been widely used.
在数字通信系统里面，全数字接收机的应用非常广泛。
In digital communication systems, synchronization is a very important question.
在数字通信系统中，同步是一个非常重要的问题。
This paper deals with the timing jitter in high speed optical fiber digital communication systems.
本文主要研究高速数字光通信系统中的定时抖动的问题。
This paper proposes and discusses a blind equalization algorithm for multilevel digital communication systems.
本文提出并讨论了一个适用于多电平数字通信系统的盲均衡算法。
They could assemble the baseband part of several digital communication systems and have great significance in the future research and realization.
本论文对今后数字通信系统基带部分的研究和实现具有很强的借鉴意义。
Automatic repeat request (ARQ) schemes have been widely applied to many digital communication systems, especially, computer communication networks.
自动请求重传(ARQ)方法已经在许多数字通信系统特别是通信网中获得了广泛的应用。
The neural network, which is a nonlinear dynamic system, has been successfully applied in the channel equalization of binary digital communication systems.
神经网络是一种非线性动力学系统，在二进制系统信道均衡实现方面得到非常成功的应用。
In this paper, the problem of blind identification and blind equalization of digital communication systems based on the second-order statistics (SOS) are addressed.
本文主要介绍了基于二阶统计量(SOS)的数字通信系统的盲辨识和盲均衡。
The purpose of channel coding is to improve the transmission quality of digital communication systems, and it always is a research hotspot in communication systems.
信道编码一直是通信系统的研究热点，它的目的正是为了改善数字通信系统的传输质量。
Random-walk filter is widely used in Bit Synchronizer of modern telemetry system and other digital communication systems in order to enhance anti-jamming ability and reliability of a system.
在现代遥测系统和其它相关的数字通信系统的码同步器中广泛采用了随机徘徊滤波器技术以提高电路的抗干扰能力和系统工作的可靠性。
Random-walk filter is widely used in Bit Synchronizer of modern telemetry system and other digital communication systems in order to enhance anti-jamming ability and reliability of a system.
在现代遥测系统和其它相关的数字通信系统的码同步器中广泛采用了随机徘徊滤波器技术以提高电路的抗干扰能力和系统工作的可靠性。
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