.LTE 物理层介绍OFDMA及MIMOOFDMA基本原理为什么引入OFDMAOFDMA基本原理OFDMA的优点OFDMA的缺点OFDMA与CDMALTE基带结构特点下行OFDM上行SC-FDMA帧结构RBOFDM参数峰值速率MIMO基本原理比较增益:阵列增益、分集增益、复用增益、干扰抑制增益Wimax MIMO/BF的系统增益TECHNOLOGIES CO.,.Page 2为什么引入OFDMA无线信道的特性:频域选择...
OFDMA系统同频干扰抑制技术研究进展
Interference is avoided by selecting only subcarriers not allocated by the macrocell and subcarriers allocated to users not nearby to the femtocell. Interference is eliminated from the received signals using co-channel interference avoidance techniques. Selection of subcarriers for femtocell use may ...
of co-channel throughput in the system model.%LTE(Long Term Evolution)やモバイルWiMAX(Worldwide Interoperability for Microwave Access)などで標準化されているOFDMA(Orthogonal Frequency Division Multiple Access)の適応変調技術(AMC: AdaptiveModulation and Coding)では,同一チャネルに含まれる全サブキ...
OFDMA系统中基于QoS的资源分配算法
Keywords:femtocell;interferenceCO—existence;orthogonalfrequencydivisionmultipleaccesssystem capacity 0 引言 传统的解决室内覆盖办法是增加宏小区基站, 减少每个基站的覆盖范围.但是宏小区基站价格十 收稿日期:2009.12-09 基金项目:国家科技重大专项项目(2011ZX03003-002-01) ...
一种新的OFDMA系统上行同步的联合估算方法
anditCanmaketheweightedarrayantennabeamdirectingtheusefulsignaltoreducethedirectiongainoftheinterferencesource,andthusachievesuppressingCO—channelinterference.Ontheotherhand,WalshHadamardTransformalsoCanreducethePAPRinOFDMsystem,analgorithmjointingadaptivebeam-formingandWalshHadamardTransformforsuppressingCO—channel...
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OFDMA系统小区间干扰调度协调算法