multilevel modulation meaning in English
多级调制
Examples
- Chapter 2 is detailed to introduce the realization principle of the adaptive multilevel modulation and its deciding threshold of choosing modulated method aggregate under the single channel , and discussed some main parameters that have great impact to modulation performance
论文第二章详细介绍了单个信道条件下自适应多元调制方式的实现原理及其选择调制方式集判决门限的确定，同时对调制性能影响较大的几个重要参数进行了分析。 - Multi - carrier adaptive multilevel modulation technology maybe regards as a kind of transform combination by n single - carrier adaptive multilevel modulation technology approximatively . multi - carrier transmission can improve performance of the attenuation consumedly but single - carrier transmission ca n ' t
多载波自适应多元调制可以近似看成由n个单载波多元调制的变换组合，但由多载波传输对衰落的改善是单载波传输所不能比拟的。 - Chapter 3 studied the results that come from the combination of the multi - carrier transmission technology and the adaptive multilevel modulation technology in detail , and bringed up to apply the technology to wireless channel transmission . the feasibility and advantage been testified by computer simulink
第三章详细讨论了多载波传输和自适应多元调制相结合的效果，提出将这种技术应用于无线信道传输的想法并仿真证明其可行性和优越性。 - A serially concatenated iterative scheme ( bpcm - id ) combining low - density parity - check codes ( ldpc ) with multilevel modulation is proposed . differ from other serially concatenated iterative decoding schemes , the whole iterative process of bpcm - id is divided into outer iteration and inner iteration to avoid too much errors feedback to the demapper which may cause severe degradation of decoding performance
论文提出了一种新的多级ldpc码的概念、基本特性、构造准则和搜索算法,给出一种融合mlc / bicm的联合编码调制系统框架,与传统mlc系统区别在于用一个多级ldpc码取代多个分量码。 - Based on the communication engineering application , several practical problems been discussed after introducing multi - carrier adaptive multilevel modulation principle . in thesis , alterable channel model been designed and realized dynamic choosing modulated method aggregate to subchannel , and theoretic analysis and computer simulink keep consistent
本章在详细介绍多载波自适应多元调制原理的基础上讨论了通信工程中的几个实际问题，构造了变化的信道模型并基于此实现子信道调制方式集的动态选择，仿真结论与理论分析一致。