trellis code造句
例句与造句
- Since the fundamental idea of tcq originates from trellis coded modulation , in order to comprehend tcq , it firstly introduces tcm . also , because viterbi decoding algorithm is the key of coding gain of tcm and tcq , it particularly introduces convolutional coding and viterbi decoding algorithm
由于tcq的基本思想源于tcm ，较好地掌握tcm的思想有助于深刻理解tcq ，所以首先介绍了网格编码调制；维特比算法是tcm和tcq提高编码增益的关键，文中对tcm和tcq都要用到的卷积编码和维特比译码也作了详细的介绍。 - The technology of trellis coded modulation ( tcm ) and viterbi decoding which could achieve high transmitting rate at a low bit ' error rate are demonstrated in detail . and then the design and achievement of itu - t v . 32 modem that based on one - dimensional tcm are expatiated . the paper also discusses the multi - dimensional tcm the itu - t v . 34 modem that based on it and tcm ' s application in the carrier communication
文中深入研究了可保证一定误码率的情况下能实现较高传输速率的网格编码调制( tcm )技术和维特比译码技术，阐述了基于单维网格编码调制的itu - tv . 32modem的设计和实现，讨论了多维网格编码调制技术和基于其的itu - tv . 34modem ，并对网格编码调制在载波通信中的应用作了简单介绍。 - Space - time codes can be divided into tree mainly parts : bell layered space - time architecture ( blast ) , space - time trellis codes ( sttc ) and space - time block codes ( stbc ) . in this paper , we mainly compare the performance of blast and stbc in many aspects , such as design criterion , transmission rate , diversity gain , diversity combining , bit error rate and channel capacity etc . in this paper , we first respectively analysed the instantaneous received symbol energy - to - noise ratio of v _ blast in the diversity combining methods of maximal ratio combining ( mrc ) , equal gain combing ( egc ) and selective combing ( sc )
Mimo技术核心是空时编码( stc ) 。空时编码主要分为三种:分层空时码( blast ) 、空时格码( sttc )和空时块码( stbc ) 。本文主要对分层空时码和空时块码这两种编码方式在设计准则、传输速率、分集增益、接收合并、比特差错率和信道容量等方面进行了较为详尽的研究。 - Based on the analysis of image wavelet transformation and the space / frequency distributing characteristics of different subbands " coefficients , this dissertation fully exploits the following theories and methods : scalar quantization , vector quantization , trellis coded quantization , trellis coded vector quantization , vector classification , codebook expansion and weighted mean square error rule basing mankind visual characteristics , etc . from different angles of information amalgamation , it develops several innovative algorithms of image compression and coding , gives their realization schemes , and makes plentiful simulation tests
本文在分析了图像小波变换的原理和子带系数空间及频率分布特点的基础上，充分利用标量量化、矢量量化、网格编码量化、网格编码矢量量化、矢量分类、码书扩展和基于人眼视觉特性的加权均方误差准则等思想和方法，从信息融合的不同角度展开了对小波图像的压缩编码研究，同时也讨论了这些方法在静止图像量化中的具体应用。 - The paper discusses the part of asic design of tcm ( trellis coded modulation ) in hdtv 8vsb terrestrial channel broadcasting receiver chip . in testing , the tcm can improve the signal - to - noise by 3 . 3db compared with uncoded 4 - vsb modulation , and with the 12 path intrasegment interleaving in tcm coding and viterbi decoding , system can control short burst noise error efficiently
在高清晰度电视信道接收芯片中内码是8 ? vsb的格状编码，在系统性能上使用tcm编码要比未编码有3 . 3db的编码增益，另外在格状编码中加入了12路的内交织，可有效的抑制短的突发噪声对接收端viterbi解码性能的影响。 - It's difficult to find trellis code in a sentence. 用trellis code造句挺难的
- Some critical coding and modulation techniques in uav communication have been discussed in this thesis , including differential phase keying ( dpsk ) , modulation multiple symbol detection ( msd ) , adaptive trellis coded modulation ( atcm ) , and space - time coding . this work was supported by the national defense 973 project . uav communication has many sophisticated technologies
本论文在国防973项目“无人机信息传输理论与方法研究”的资助下，结合现代数字通信领域的新技术，根据无人机通信的特点和需求，对其中的几项关键技术做了深入研究。
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