1) MAP reconstruction algorithms
MAP重建算法
2) MAP algorithm
MAP算法
1.
In this paper, the succinct nonbinary MAP algorithm is derived, and the analytical performance of Turbo TCM technique is presented in mobile satellite channel.
推导了简洁的非二进制符号 MAP算法 ,并对 Turbo TCM在卫星移动信道下的性能进行了分析和仿真 ,结果表明 Turbo TCM的性能明显优于常规 TCM。
2.
In order to solve the problem that Sub-MAP algorithm has definite approximate error,Sub-MAP algorithms is improved by approaching by piecewise line, and a calculation model of metrics is proposed for the algorithm.
为了解决Turbo译码Sub -MAP算法具有一定近似误差的问题 ,讨论了Turbo译码的Sub -MAP算法形式 ,用折线逼近曲线的方法 ,对Sub -MAP算法提出了改进方案 ,给出了Sub -MAP改进方案中度量值的计算模型 ,并讨论了Sub -MAP改进方案选择的合理性 。
3.
This paper first analyses the conventional algorithm for Turbo-codes decoding based on MAP,then points out the defect of these algorithm on decoding delay,analyzes conventional SW-MAP algorithm that can reduce decoding delay;and finally presents an improved scheme of SW-MAP algorithm based on its characters.
文中首先分析了基于最大后验概率的Turbo码传统译码算法,然后指出了使用这类算法具有大译码延时的缺点,分析了常用的能减小译码延时的SW-MAP算法;最后根据此算法的特点提出了SW-MAP算法的改进方案。
3) Log-MAP algorithm
Log-MAP算法
1.
Based on the conventional Log-MAP algorithm for Turbo-codes decoding and the existing algorithm for simplifying Log-MAP,an improved algorithm is presented in this paper.
仿真结果表明,新的算法在大大降低译码复杂度的同时较好地保持了译码性能,使其非常接近Log-MAP算法的译码性能;同时也非常有利于硬件实现。
2.
When turbo decoder is implemented by Log-MAP algorithm, it is necessary to calculate the correction term by look-up table (or other ways).
Log-MAP算法实现Turbo译码时,要用查表等方法进行修正项的近似计算。
3.
Based on Log-MAP algorithm of easy engineering implementation, the two different methods of using extrinsic information, the Berrou and Robertson schemes, are studied deeply in the paper.
以易于工程实现的Log-MAP算法为基础,深入研究了两种不同的外信息使用方式:Berrou方案及Robertson方案,指出两种外信息使用方式具有统一性,不同的是迭代译码过程中对外信息使用权重的处理;在相同约束条件下对基于两种外信息使用方式的Turbo码性能进行蒙特卡罗仿真,结果表明Robertson方案从整体上要略优于Berrou方案。
4) MAP
MAP算法
1.
The encoding and decoding of nonbinary convolutional Turbo codes and the MAP algorithms based on bit decision in 802.
16a协议中的多进制卷积Turbo码编码原理以及基于比特判决的MAP算法,并提出了一种改进的交织方案以及仿真结果。
5) SW-MAP algorithm
SW-MAP算法
1.
This paper first analyses the conventional algorithm for Turbo-codes decoding based on MAP,then points out the defect of these algorithm on decoding delay,analyzes conventional SW-MAP algorithm that can reduce decoding delay;and finally presents an improved scheme of SW-MAP algorithm based on its characters.
文中首先分析了基于最大后验概率的Turbo码传统译码算法,然后指出了使用这类算法具有大译码延时的缺点,分析了常用的能减小译码延时的SW-MAP算法;最后根据此算法的特点提出了SW-MAP算法的改进方案。
6) MAP-MLE algorithm
MAP-MLE算法
补充资料:CT影像重建算法
CT影像重建算法
影像学术语。CT计算机系统进行影像重建的数学方法。主要包括:总和法,逆矩阵法,叠代法和解析法等四类十多种算法。其中解析法被广泛应用。该算法的基础是傅立叶转换及其投影定理,在解析法中重叠和法(deconvolution)也称展现法(unfolding),卷积逆投影法(convolutionback-projection)是目前所有CT影像重建过程都必不可少的。CT影像重建算法中的很多方法也可用于其他影像学检查方式,如磁共振成像(MRI),核医学显像。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条