关于正交频分多址接入的专利信息分析

来源 :电声技术 | 被引量 : 0次 | 上传用户:jyk1987525
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
正交频分多址接入(OFDMA)是LTE技术的核心技术之一.将OFDMA技术进一步细分为几个技术分支,以几个技术分支为主题进行专利检索和查全、去噪等步骤得到专利文献数据,从申请量趋势、申请人等多个方位和角度对这些数据进行了专利文献分析,还进一步总结了相关专利文献的国际专利分类号(IPC)、欧洲专利分类号(EC)、联合专利分类号(CPC)的等分类号的情况,以及不同分类号在该领域的特点和现状,并对该领域技术发展提出了展望与建议.
其他文献
In this article, we give an operator transform (∧T)(*) from class A operator to the class of hyponormal operators. It is different from the operator transform
Unstable angina(UA)is the most dangerous type of Coronary Heart Disease(CHD)to cause more and more mortal and morbid world wide.Identification of biomarkers for
In this article, Haseman boundary value problem for a class of meta-analytic functions is studied. The expression of solution and the condition of solvability f
In this article, we give a simple proof on the energy scattering for the Hartree equations using the interaction Morawetz estimate that was originally introduce
In order tO solve the problem of rib spalling of high coal walls in fully-mechanized (HCWFM) mines, we used the principle of damage mechanics to analyze coal wa
A number of salen-metal complexes were prepared and their enantioselective catalytic properties toward the asymmetric iodolactonization of(E)- and(Z)-5-substitu
Polycrystallines Bi0.5Ca0.5-xLaxFe0.3Mn0.7O3(x=0, 0.05, 0.10, 0.15, 0.20, 0.25) were prepared by molten salt method and showed perovskite orthorhombic structure
A novel and facile method of introducing 4-hydroxyl group into the aromatic ring of azabenzanthrone compounds was carded out by reacting azabenzanthrone compoun
随着用户对客户服务水平的要求不断提高,交互式语音应答技术得到快速发展.为加强对该技术的专利保护并规避专利风险,以历年来交互式语音应答技术领域中国专利申请数据为基础,
针对智能天线领域专利申请的特点,对该领域越来越多的具有复杂机械结构的权利要求进行研究,归纳总结了该类权利要求的常见类型,分析了智能天线领域具有复杂机械结构的权利要