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- Automatic Frequency Planning 自动频率规划
- PAS Wireless Access Frequency Plan. 系统无线接入信道频率。
- Frequency planning is very important and hard in GSM network planning and optimizing. 频率规划是GSM网络规划和优化中的关键问题,也是难点。
- Automatic frequency control (AFC) system is used to adjust the frequency of microwave power source to match the inherent frequency of acceleratory tube. 自动频率控制(AFC)系统用于调节微波功率源输出的微波频率,使之与加速管的固有谐振频率匹配。
- The frequency planning for a cellular system enhanced with two-hop fixed relay nodes (FRNs) is investigated. 研究了两跳固定中继蜂窝网的频率规划问题。
- This article introduces the principle of the closed link automatic frequency control system in Z2000 spread spectrum transceiver and how to control it. 本文阐述了Z2000接收机内的闭环自动频率控制系统的工作原理,并说明如何控制这个系统。
- In order to make the RF source and the waveguide have the same resonant frequency,the automatic frequency control(AFC)system is used. 为了使得射频源和波导管的频率保持一致 ,采用了自动频率控制系统 (AFC)。
- The microwave oscillator frequency is locked to the resonant frequency of loaded resonator by means of automatic frequency control (AFC). 微波振荡频率用自动频率控制 (AFC)的方法自动锁在有载腔的频率上 .
- For a WCDMA system, frequency planning is not required, but scrambling code planning for neighborhood cells is necessary. 宽带码分多址(WCDMA)系统采用码分多址的无线接入方式,不需频率规划,但需进行相邻小区扰码的规划用以区分各小区。
- In this paper, a frequency plan scheme is proposed, which adopts frequency reuse in UCR, and macro diversity in CCR. 在该小区结构的基础上,该文提出了在单一覆盖区内采用频率复用,在交叉覆盖区内采用宏分集的频率规划方案。
- TheSPM-D10 synchronizer provides automatic frequency, phase and voltagematching using either analog or discrete output bias signals. 该扫描探针显微镜-D10的同步器提供了自动频率,相位和电压匹配使用模拟或离散输出偏置信号。
- Paper addresses 230M frequency planning and opti-mizing method,cellular network structure and some specific viewpoints on network configuration. 从网络设计的角度出发提出了230M频率规划和优化方法,提出了蜂窝组网模型,并对网络的参数设置提出了独到的建议。
- The system based on the principle of zero-IF is realized by WE905 chip combined with AFC (Automatic Frequency Control) circuits power amplify circuit and so on to communicate. 该系统主要基于零中频技术原理,在主芯片WE905的基础上,结合自动频率控制电路、滤波电路、信号放大电路等功能电路实现无线通信。
- Algorithms,such as automatic frequency control(AFC),automatic gain control(AGC),phase-amplitude tracking(PAT),and phase ambiguity detecting (PAD),were jointly used in this scheme. 综合应用自动频率控制(AFC)、自动增益控制(AGC)、相位/幅度跟踪、相位模糊检测等算法,在没有任何训练序列的情况下,能准确地恢复调制信号载波相位。
- Simulation results demonstrate that, compared with full frequency reuse without frequency planning, the proposed frequency reuse scheme improves system throughput and CEU throughput significantly. 仿真结果表明,与未经过频率规划的全频率复用相比,该文提出的频率复用方法提高了系统吞吐量并显著改善了小区边缘用户性能。
- This algorithm is applied for carrrier and bit synchronization, AFC (Automatic Frequency Control) of MAX2820. The algorithm comprises of PN acquisition ,PN tracking, leftover carrier estimate and AFC algorithm. 本文中还讨论了零中频直扩系统的基带接收模块,用于载波同步和位同步,提取频偏信息,对射频芯片Max2820进行自动频率控制。 它包括了伪随机码的捕获、跟踪、残留频偏算法以及AFC算法电路。
- The last stage is frequency planning evaluation.It includes MRR voice quality assessment, analysis of statistical indicators of STS, voice quality assessment of DT, etc.The desired effect is acquired. 最后第四部分频率规划效果评估,对MRR通话质量评估,STS统计指标分析,测试话音质量评估等进行了评估,取得了预期的效果。
- This paper introduces a simple, reliable AC power supply with constant voltage and frequency. The supply consists of a DC motor-AC generator set, a automatic voltage regulator (AYR), and a automatic frequency regulator (AFR). 本文介绍一种简单可靠的恒压恒频交流电源装置;它由直流电动机-交流发电机组、自动电压调节器AVR及自动频率调节器AFR组成.
- A wetness measurement system based on cavity perturbation method is designed for precise measuring,including automatic frequency tracing system and equal precision frequency measurement system. 以汽轮机内蒸汽湿度的准确测量为目的,设计了基于微波谐振腔微扰法的蒸汽湿度测量系统:自动频率跟踪系统和等精度频率测量系统。
- Automatic Frequency Control A circuit in a radio receiver which automatically brings the tuning units of the set into resonance with a wave which is partially tuned in. 自动频率控制无线电接收机中的一种电路,能够自动实现接收机中的调谐单元与部分接收到的波形谐振。