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- Rather than a single carrier solution, OFDM is chosen as a result that its equalizer dealing with the problem of high channel delay spread has lower complexity. 采用正交分频多工而不采用单载波技术的原因为其用于处理高通道延迟扩散问题的等化器具有较低的复杂度。
- A novel frequency domain differential demodulator is proposed which employs blind phase estimation to cancel the effect of phase error caused by delay spread. 该文提出一种新的频域差分解调器，通过盲相位估计来消除延时扩展造成的相位误差的影响。
- If the coherent bandwidth of channel does not exceed the occupied bandwidth of two chips, with the increase of delay spread of the channel, FD-SS-CLDD exhibits a better performance to make the system resistant to frequency-selective fading. 分析和仿真结果表明,频域扩频码片级差分检测具有抵抗频率选择性衰落的能力,在信道的相干带宽不小于两个码片对应的频带宽度的前提下,随着信道多径时延扩展的增加,其误码率性能有进一步的提高。
- In this paper, base on spatial channel model with time delay spread and angle spread, an Joint beamforming and power control algorithm for downlink bemforming using intelligent antenna array is researched. 本文基于时延和角度扩散空间信道模型,提出了一种下行基站联合优化波束和发射功率的智能天线技术。
- To transmit data in a manner to mitigate the deleterious effects of delay spread, the expected coverage areas for multiple transmissions to be sent in multiple time slots are initially determined. 为了以一种减轻时延扩展的有害影响的方式来发送数据，首先确定将要在多个时隙中发送的多个传输的期望覆盖范围。
- time-varying channel with delay spread 时变时延散布信道
- multi - path delay spread channel 多径延时信道
- root mean square (RMS) delay spread 均方根时延扩展
- We use iterative decoding, super trellis decoding and interleaving to improve the error performance for different number of resolvable paths and delay spreads. 对于不同的多路径衰退通道与不同的信号延迟扩散，我们可以使用重复性解码、超篱栅解码演算法与交错器改善错误性能。
- Moral taint has spread among young people. 道德的败坏在年轻人之间蔓延。
- He spread the map flat out on the floor. 他把地图平铺在地上。
- No delay! We urgently need these books. 决不要拖延！我们急需这些书。
- For the multipath delay spreading problem existing in the mobile communication systems, a parallel quadrature AM data transmission system with a number of overlapping subchannels is investigated. 摘要针对移动通信系统中存在的多径延时扩展问题，研究了一种具有很多相互重叠子信道的并行正交调幅数据传输系统。
- For multiple-antenna systems, performance of this training scheme will be degraded drastically with the increase of the number of antennas and the delay spreads of multipath channel. 在多天线系统中使用前述训练序列估测通道，它的表现受限于天线数量及多路径通道的延迟扩散。
- A hopeless future seemed to spread out before her. 展现在她面前的似乎是毫无希望的前途。
- He has spread a slice of bread with Jam. 他把面包片抹上了果酱。
- The delay made the patient go purple in the face. 时间的拖延使病人脸色发紫。
- He spread the news around the town. 他在镇上到处传播这一消息。
- We decided to delay our wedding until next year. 我们决定把婚礼推迟到明年。
- The news soon spread to the farthest corner. 消息很快传到最远的角落。
