timing channel

A preamble-aided timing synchronization and channel estimation scheme for OFDM systems

基于前导序列的OFDM定时同步与信道估计算法

An Adaptive Random Delay Based Approach to Mitigating Network Covert Timing Channel

适应性随机延迟的网络隐蔽时间信道干扰方法

Network covert timing channel transmits covert information by interval time between packets' sending, and thus leaks information.

其中，网络隐蔽时间信道利用网络包发送时的时间间隔传输隐秘信息，实现信息泄漏。

To improve the efficiency of covert channels, an adaptive receiving covert timing channel was proposed and implemented.

为提高隐蔽信道的通信效率，设计并实现了自适应接收的隐蔽时间信道。

Two methods were employed to improve symbol timing and estimation of channel delay. The Doppler shift in the received signals was estimated based on data packet duration, and interpolation was used to remove Doppler shift.

采用块估计方法估计多普勒频移，利用线性插值方法进行多普勒频移的补偿。

Research on Symbol Timing Recovery, Channel Estimation and Equalization ( in OFDM Receiver);

符号定时同步、信道估计与均衡（OFDM接收机）

Constant fraction timing single channel analyzer

恒比定时单道分析器

Network covert timing channel is one kind of network covert channels. It is often constructed by transmit rate or interval time of network packets.

其中，网络时间隐蔽信道是网络隐蔽信道的一种，常常使用传输速率或网络包间隔时间等方式来实现。

It was found out as far as the maximum channel delay is less than the cyclic prefix, the effect of timing synchronization errors i.e. ISI is drastically reduced.

仿真结果表明，只要最大信道延时小于循环前缀的长度，定时同步错误所引起的码间干扰将大幅降低。

In this paper, a joint timing recovery and channel equalization design method is proposed for OFDM system.

本文提出一种OFDM系统中定时恢复与信道均衡联合设计方法。

This paper presents and implements a trusted control strategy in which the asynchronous message passing mechanism in message filter algorithms eliminates the covert timing channel, and schedules the execution of object oriented methods, and thus ensures the correct results of computations.

本文提出并实现了一种可信的控制策略，在消息过滤算法中采用异步消息传递方式消除时间隐通道，并对系统中对象方法的执行进行调度，确保消除时间隐通道不会导致执行结果不正确。

Network covert timing channel has become a serious threat, so that the system and network which deal with the confidential information must limit network covert timing channel strictly.

网络隐蔽时间信道已经成为网络中重大的威胁，处理机密信息的系统和网络必须对网络隐蔽时间信道进行严格限制。

According to the speciality of insensitive to timing error for fractionally spaced equalization, the writer makes a study that timing synchronization and channel equalization are both achieved by using fractionally spaced equalization.

由于分数倍均衡器具有对定时相位不敏感的特性，所以作者主要研究了利用分数倍盲均衡器进行定时同步的问题（也同时实现了信道均衡）。

Network covert channel includes network covert storage channel and network covert timing channel.

网络隐蔽信道一般可以被分为网络隐蔽存储信道和网络隐蔽时间信道。

It consists of a multiwire proportional chamber, a delay line, a main amplifier, a timing single channel amplitude analyser and a time to amplitude converter.

它由多丝室、延迟线、主放大器、定时单道以及时幅变换器等组成。