For the first time, the performances of hybrid ARQ based on RS code over Gilbert bursty channels are analyzed in this thesis, from which the important performance measures such as packet error rate, average transmission times, throughput efficiency and transmission delay are formulated.
文中首次对基于RS码的混合型ARQ在Gilbert突发信道上的性能进行了理论分析，并导出了系统重要性能指标，如分组错误率、平均传输次数、ARQ系统的通过效率、平均传输时延等的解析表达式。
It can transmit more information through re-transmit scheme and improve the performance of Error Correction Code by lowering rate of the ECC.
与普通的ARQ方案相比，该重传方案不单能够通过重传获得更多的信息，而且能够通过降低纠错码的码率来提高纠错码的性能。
Concrete a Half-duplex Point to Point Communication with 8344 SCM; 2. An efficient ARQ protocol for half-duplex channels in underwater acoustic communication systems; 3. According to the characteristics of the fuze, half-duplex working mode is sele.
以中大口径引信静态感应装定系统为应用平台，根据引信静态感应装定系统的特点，选用半双工方式来完成装定器和引信之间的信息双向传输，并具体介绍了引信静态感应装定系统的设计。
The incremental redundancy hybrid ARQ scheme can provide high throughput efficiency. Meanwhile, it also leads to high transmission delay.
摘要冗余递增混合ARQ能提供较高的数据通过率，但也带来了较大的传输时延。
The calculation and simulation results in the paper show, comparing to the ordinary incremental redundancy hybrid ARQ systems with adaptive modulation, the AM-LD-IR system can provide a little higher throughput efficiency and can reduce much transmission delay.
仿真和计算结果表明，与采用固定冗余递增策略的自适应调制混合ARQ系统相比，该系统在保证较高的数据通过率的前提下，大大降低了系统传输时延。
This paper presents a Low-Delay Incremental Redundancy hybrid ARQ scheme with Adaptive Modulation. It adopts different strategy of incremental redundancy and constellation size according to the received Signal-to-Noise Ratio.
该文提出一种具备低时延冗余递增策略的混合ARQ系统并与自适应调制系统相结合，不但根据不同的接收信噪比，选取不同的调制方式，而且还选择不同的冗余递增策略。
In this paper, a cross-layer design in OFDM (Orthogonal Frequency Division Multiplexing) systems with a space-time coded transmit diversity is provided, which combines the use of AM at the physical layer and ARQ (Automatic Repeat reQuest protocol) at the data link layer.
摘要该文讨论了基于空时编码发射分集正交频分复用系统的跨层传输技术。
A modified Go-Back-N ARQ mechanism with timer-controlled is introduced at PM layer to realize error detection and retransmission.
随后，本文设计了定时器控制超时的改良连续ARQ机制，以保证有扰信道下的可靠数据传输服务。
In recent years, with computer technology and the rapid development of communication technology, ARQ error control research and application of technology has made tremendous development, ARQ error control technology has become increasingly widespread.
近年来，随着计算机技术和通信技术的飞速发展，ARQ差错控制技术的研究和应用取得了巨大的发展，ARQ差错控制技术应用也越来越广泛。
It contains these content:Introduction the fundamentals of designing automatic radio telex system, especially ARQ(Automatic Request for Repetition) and FEC Forward Error Correction.
论文主要包括以下几方面内容：阐述设计自动无线电传系统所应用到的基本工作原理，重点是ARQ和FEC工作原理。
In this paper, based on the characteristic of long round trip delay, an efficient ARQ protocol, which is suitable for half-duplex channels, is presented by remarkably shortening the responding time of each packet data.
本文针对水声信道长传播时延这一特点，利用扩频通信技术，将单个信道分成两个子信道：一个用于前向信道，另一个用于反向信道，从而使得对每个分组数据的响应时间大大缩短，提出了一种有效的适合于半双工特性的ARQ协议。
Closed form expression of throughput efficiency of ideal and non-ideal adaptive selective repeat ARQ is derived using multi state Markov system model defined according to both channel state and transmission mode.
提出了一种相关瑞利衰落信道下的一种自适应选择重传ARQ算法，根据信道状态变化自适应的调整SR ARQ的发送模式即分组长度，利用信道状态和发送模式合并后的多状态马尔可夫模型推导了理想情况下和非理想情况下的自适应SR ARQ吞吐量的闭合解。
In-Order-Delivery of ARQ adds resequencing delay to packets'link transmission time.
自动请求重传的按序提交会产生重排序时延，增加分组的链路传输时间。
The hybrid FEC/ARQ error control scheme has strict requirement of network condition and high algorithm complexity.
根据流媒体内容重要性的不同和网络条件的变化自适应调整数据包和冗余包的比例。
Therefore, the reliability of data and image transmission is usually improved using hybrid ARQ error control scheme which is combined by ARQ and FEC.
因此为了提高数据及图像传输的可靠性，人们提出了采用ARQ与FEC相结合的混合ARQ差错控制方案。
In chapter 3, based on the RS type-Ⅱ hybrid ARQ schemes proposed by SB Wicker et al, a hybrid error control scheme suitable for wireless ATM is proposed according to different QoS requirements of different services, that is voice service is protected by pure RS code with reasonable symbol interleaving, video and data services are protected by truncated RS type-Ⅱ hybrid ARQ scheme with limited retransmission times.
在第三章中，我们在Wicker SB等人提出的RS/混合Ⅱ型ARQ的基础上，根据WATM系统中不同业务对QoS的不同要求，提出了一种混合型差错控制方案：用纯RS码来保护实时话音业务，用限制重传次数的截短RS/混合Ⅱ型ARQ保护图象和数据业务。
This basic method can be extended to allow for higher order serial correlation, ARq
这个基本模型可以被扩展为允许更高阶的序列相关性，ARq
Chapter 6 involes soft decision detection and application of the soft decoding in hybrid ARQ system.
第六章研究软判决检测和软判决译码在混合ARQ中的应用。
The algorithm, based on cross-layer optimization design, predicts the packet loss rate using the model of GM (1, 1), and adjusts the ARQ parameter Nmax according to the characteristics of the number of frames of a GOP. Besides, an adaptive FEC at the application layer was used to adjust the sending rate of MPEG video frame adaptively and to allocate the network bandwidth resource between the MPEG video source data and the redundant data dynamically.
该策略采用跨层设计的方法，基于GM（1，1）模型预测当前的网络状态，考虑GOP可解码帧数的特性，自适应地调整ARQ参数Nmax；另一方面，在应用层采用自适应FEC策略，在视频源数据和冗余数据之间动态分配网络带宽。
With Delphi language of the network link layer of ARQ agreement simu...
用Delphi开发语言实现的对网络链路层的连续ARQ协议的仿真。