查询词典 pilot signal

Thus, the signal information is treated as virtually encoded data for the channel of interest, and may comprise essentially any type of signal that is known or determinable, such as a pilot, synchronization, traffic, or control channel.

因此，将信号信息作为针对感兴趣信道的虚拟编码的数据进行处理，可包括基本上任何类型的已知的或可确定的信号、如导频、同步、业务或控制信道。

When a noise signal is present, a pilot signal and noise signal passing through a capacitor are applied to the inverting input port of the subtracter via a second MOS transistor to cancel the noise signal contained in the composite input signal.

当噪声信号时，一个试验信号与噪声信号通过电容通过应用通过一个晶体管第二马鞍山到减法反相输入端口，取消噪声信号的复合输入信号中。

According to a typical OFDM signal model, this paper proves that the coefficients matrix of the intercarrier interferenceis a unitary matrix whose inverse matrix is much easier to get, and then proposes a new ICI cancellation method with less computation complexity based on sending pilot symbols.

根据一种典型的OFDM系统模型，证明了载波间干扰系数矩阵为酉阵，并利用其容易求逆的性质，提出了一种基于发送训练码的ICI消除方法，以较小的计算复杂度对接收信号进行处理来消除ICI。

No persons other than navigation pilot and those approved by the health and quarantine organ shall be allowed to get on board the vessel with quarantine flag or light signal, no unloading of luggage, cargo, postal parcels shall be allowed, no other vessel shall be allowed to get close, no crew member shall be allowed to leave the vessel without the approval by the health and quarantine organ, unless the vessel is in distress.

第二十六条悬挂检疫信号的船舶，除引航员和经卫生检疫机关许可的人员外，其他人员不准上船，不准装卸行李、货物、邮包等物品，其他船舶不准靠近；船上的人员，除因船舶遇险外，未经卫生检疫机关许可，不准离船

In some embodiments, the data measurements for each pilot signal further include an RMSE estimate and time of measurement for each time of arrival, and an energy measurement for all resolvable paths.

在一些实施例中，每个导频信号的数据测量还包括RMSE估计和每个到达时间的测量时间以及所有可分辨路径的能量测量。

There are three OP signals at the frequencies E5a, E5b and E2L1E1 , whereat the signal on E5a is a 10Mcps signal with 50sps data and a Pilot channel.

E5a采用10兆赫，50定位系统和1个导航渠道， E5b也是10兆赫和一个导航渠道，却是250个定位系统数据调制。

This paper also analyzed the relationship between power efficiency of power amplifier and PAPR, and deduced the closed form formulation of power allocation between superimposing pilot signal and data signal.

在考虑功率放大器转化效率的前提下，分析了功率转化效率与峰均功率比之间的关系，推导了叠加的导频信号与数据信号功率分配的闭环表达关系式。

In this apparatus, a reception quality determining part (110) uses a pilot signal, which is included in a received signal, to determine the reception quality for each of subcarrier blocks.

在该装置中，接收质量测量单元(110)利用包含在接收信号中的导频信号，对每个副载波块测量接收质量。

The paper investigates both block-type pilot linear minimum mean square error algorithm and IEEE802.16 OFDM channel estimation analysis. Simulation results confirm the block-type pilot structure is more suitable for IEEE802.16 system. An optimal pilot setting algorithm, based on space frequency domain, is explored and the pilot chart is presented. The proposed algorithm finds its application in MIMO-OFDM. Simulation results show the algorithm presents a good approximation to the perfect channel state information curve, with about 2dB difference in SNR. The simulation results also demonstrate the algorithm achieves fairly high stability in the environment of fast fading, performance of the proposed algorithm is better that of pilot training channel estimation.3. Taking into account the characteristics of IEEE802.16 OFDM system, OFDM system simulation platform is constructed in Matlab, exploiting simulink as a tool. OFDM modulation and demodulation simulation system are configured on LabVIEW platform. All the system signal processing is simulated, including defining system parameters, designing modulation model, and verifying all the proposed algorithms under different environments, such as white Gaussian noise, multi-path fading, with or without guard interval etc. Bit error performance is evaluated. The research provides valid theoretical basis for practical OFDM system performance evaluation.4. Taking advantage of software radio, the paper designs a hardware platform with both 256-IFFT/FFT and 512-IFFT/FFT OFDM schemes co-existing in one platform. You can predetermine one from the two schemes to carry out almost the same model function with different system performance and parameter setting.5. Referring to IEEE802.16 standard, the paper proposes a design method for generating signals and frames suitable for laboratory investigations implemented in laboratory environment.6. Based on 6701evm digital evaluation card, combined with analogy front-end, the paper designs a DSP software model to deal with baseband signal processing. An overall OFDM scheme, with modulation and demodulation function, is accomplished.

讨论分析了MIMO-OFDM中一种基于空频域的最优导频设置算法，给出了导频图案，通过仿真实验表明，该算法与理想的信道状态信息曲线非常接近，信噪比差距约在2dB左右，并且在快衰落条件下具有较好的稳定性，其性能要优于基于前导训练的信道估计方法。3、根据IEEE802.16OFDM系统特点，论文分别在Matlab中应用Simulink工具构建OFDM系统仿真平台、在LabVIEW平台上实现了OFDM调制解调仿真系统，模拟了整个系统的信号流程，进行了OFDM仿真系统参数的选择和调制模块的仿真设计、论证各算法性能，并根据各种不同的条件：例如高斯噪声、多径衰落、有无保护间隔等，对系统的误码特性进行了评估，为正确评价实际OFDM系统的性能提供了有效的理论依据。4、论文以软件无线电思想作为指导，提出了以256点IFFT／FFT为核心和以512点IFFT／FFT为核心的两种OFDM算法模式并存于同一个硬件平台、且可预选的方案，它们在参数选取和性能指标上有所差异，均实现了相似的模块和功能。5、论文参考IEEE 802.16无线网络标准的参数设置，针对本设计系统的应用环境和系统硬件的性能速率，提出了一种应用于实验室环境的信号结构、帧格式等参数设计。6、论文基于TI公司的6701evm数字评估板卡，结合模拟前端搭建数字中频平台，设计了基带处理的DSP软件模块并进行系统调试，基本实现了一套完整的OFDM调制解调方案。

In order to solve the problem, we recommend a channel estimation method by using pilot signal. In this thesis, we choice complementary code to be pilot signals.

为了有效解决这样的问题，我们将介绍一种使用互补码做为领航信号的通道估测方法。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。