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- group delay spread 群时延展宽
- This paper discusses group delay and phase delay of resonance loop. 讨论了谐振回路的群延时与相延时以及它们在电视技术中的应用。
- 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。
- The group delay and dispersion of whistler wave are mainly dependent on ionization density. 哨声群时延和色散值主要决定于电离密度;
- Group delay distortion,attenuation distortion and echo will cause the intersymbol interference. 影响数据传输质量的主要因素为:群时延失真、衰减失真以及回波引起码间干扰;
- Abstract: this paper discusses group delay and phase delay of resonance loop as well as their application to TV technology. 文摘:讨论了谐振回路的群延时与相延时以及它们在电视技术中的应用。
- 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。
- The mathematical expression of the relationship between degree of polarization(DOP)and differential group delay(DGD)for Gauss pulse is derived. 理论推导出准单色光波情况下、输入信号为高斯脉冲时偏振度(DOP)与差分群延时(DGD)关系的简明解析表达式。
- 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。
- The group delay,which characterizes the linear distortion of the system and network,is an important transmission characteristic. 群时延是系统和网络的一项重要传输特性,它表征系统和网络的线性失真。
- 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。
- The differential group delay (DGD) of the output light which passes through the E-O modulator PMD is estimated and verified by the experimental data. 藉由实验量测到的眼图，我们可以评估光载波经过电光调变器，所产生的群速色散与系统被极化色散现象影响的程度。
- The difficulty of solving PMD lies in its randomness of differential group delay (DGD) between the principal states of polarization (PSP) and the change. PMD问题的最大困难在于差分群延迟（DGD）和偏振主态（PSP）变化的随机性。
- Given the desired group delay, the complex Cepstrum coefficients are computed in such a way thatthedenominatorgroup delay is approximated in the WeightedLeast Square sense. 通过使全通滤波器传递函数分母的群延迟在加权最小均方意义下近似理想的群延迟,导出复倒谱的计算公式。
- Because this system uses the spectrum minutiae of the group delay spectrum to be as the sample, it can be used to compare with the traditional endpoint and bifurcation minutiae. 因为，本系统采用群延迟频谱的频谱特徵值取样，和传统所使用的端点与叉点特徵值相比，所需的影像前处理计算量相对地少与较少的影像增强功能；
- It is important to know how does the degree of polarization (DOP) change with differential group delay (DGD) when DOP is feedback information for adaptive PMD compensation. 在用偏振度作为反馈信号的动态偏振模色散补偿系统中,偏振度与差分群延时的关系对于准确快速的动态偏振模色散补偿很重要。
- 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
