查询词典 Turbo

From the sequence correlation requiring of Turbo codes coding and decoding, correlation of sequence is proposed as a criterion to design interleaver, a good interleave scheme called clinodiagonal interleaver is obtained.

从Turbo码距离特性解释了Turbo码的性能，由于分量码采用递归系统卷积码，具有码距拖尾性，使得交织器长度为N的Turbo码能使误码率降低到卷积码的1/N。

Based on optimizing the interleave algorithm of 3GPP, a turbo encoder is implemented using FPGA technique.

在对3GPP的交织算法进行优化的基础上，基于FPGA技术实现了Turbo码编码器；在对用Max-Log-MAP算法进行优化的基础上，基于DSP技术实现了Turbo码的译码器；最后通过接口实现了一个完整的Turbo码编、译码系统。

Based on the signal and the system, the principle of operation for the Turbo codes is considered, and some noted problems are discussed in the design of the interleaver for Turbo codes.

从信号与系统角度研究了Turbo码编码器的工作原理，并在这一基础上指出了Turbo码交织器设计过程中应注意的一些问题。

The Turbo-codes encoder is comprised of Recursive Systematic Convolutional Codes, which is connected by an interweaver. And the decoding algorithm of Turbo-codes, such as MAP, Max-log-MAP and SOVA, are all based on the soft input and soft output module.

传统的Turbo码山两个经交织器连接的分量码编码器级联而成，且Turbo码的译码采用了软输入软输出的算法思想和迭代译码的方法，使子译码器之间可以相互传递软信息，保证编码信息的充分利用。

The general decoding method for Turbo codes provided by the invention adopts enhanced Max-Log-MAP algorithm, makes use of Max-Sum semiring property in the generalized distribution law and combines and simplifies measure and calculation of forward and backward status of traditional binary Turbo codes, which means combining grid graph of traditional binary Turbo codes in nature to ensure that the status measure and calculation of the traditional binary Turbo codes have the same calculation expression way with that of the duobinary Turbo codes so that a general decoding device can both decode the traditional binary Turbo codes and duobinary Turbo codes.

本发明提出的Turbo码通用译码方法采用增强型Max-Log-MAP算法，利用广义分配率中的Max-Sum半环性质，对传统二进制Turbo码的前向和后向状态度量计算进行合并简化，从本质上也就是对传统二进制Turbo码的网格图进行合并，使得传统二进制Turbo码的状态度量具有和双二进制Turbo码一样的计算表达方式，从而使得通用译码装置对于传统二进制Turbo码和双二进制Turbo码都可实现。

Compared with uncoded system, the Turbo-coded optical wireless system improves the performance of optical wireless link because Turbo code compensates losses and noises of link and improves jamming-rejection ca...

比较了基于Turbo码的大气无线光通信系统与未编码大气无线光通信系统，发现Turbo码技术能够很好地补偿和克服各种衰减和噪声，提高了系统的抗干扰能力，使系统的性能得到了很大的提高。

Based on this, we employ the Turbo code as channel code, and present a CWP-MC-CDMA system concatenating with space-time coding and Turbo coding, and give corresponding system model and principle analysis.

在此基础上，我们采用Turbo码作为信道编码，提出一种级联空时编码和Turbo码的CWP-MC-CDMA系统，给出相应的系统模型和原理性分析。

And the basic principles of coding and decoding of Turbo Codes are discussed, the MAP and Max-Log-MAP algorithms which are suitable for the Turbo Code are detailedly discussed. Then, because the interleaves technology has important influence in radio channel, the article provides the detailed scheme of implementation in WCDMA system. Besides providing a series of simulation illuminates the influence of interleave-length to the Turbo-code performance.

由于交织技术是为了抵抗无线信道的噪声以及衰落的影响而采取的时间分集技术，在WCDMA的编码过程中具有重要的作用，所以本文对交织技术在WCDMA系统中的应用也做了详细介绍，并且通过仿真说明了交织长度对Turbo码性能的影响。

The performance of the turbo codes employing 16, 8 or 4 states constituent codes are compared with each other. The effect of a block interleaver or a random interleaver on turbo codes is analyzed, and the concept of"effective length of codewords"is presented.

分析与模拟了由不同状态、不同连接矢量的分量码构成的turbo码的性能，讨论了归零处理turbo码性能的影响，研究了分组交织器与随机交织器的性能差异，提出了&有效码长&的概念； 4。

Finally we combine turbo code with OFDM technology ,then make some emulations under several kinds of channel fading types in the mobile communication ,it has offered new choice for turbo code applying in fading channel.

所以最后我们将Turbo码与OFDM技术相结合，针对移动通信信道的各种不同的衰落类型进行仿真分析，为Turbo码在衰落信道中的应用提供了新的选择。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。