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base band lan 基频局域网络
The cumulate distrbution of base band noisy signal. (6). (5).;基频含燥讯号多次试验之累积机率分布。
A kind of filter that works in the base band of images is developedto eliminate the stripes additive to images, etc. 自行研制了图像基带滤波器以消除图像条纹噪声等。
Another challenge for MIMO base band processor design comes from error correcting codes. 纠错编码技术也是MIMO系统设计的一个关键问题。
Both intermediate and base band frequency sampling schemes may be used in all digital DS/CDMA receiver. 全数字 DS/CDMA信号接收机既可以采用中频采样方案 ;也可以采用基带采样方案 .
Base Band Interpolator Pulse Shaping (BBIPS) filter is a key component of all digital modulator. 摘要基带内插脉冲成形(BBIPS)滤波器是全数字调制器的核心模块之一。
Base band and overtone will be generated at the same time when the string of stringed instrument oscillate. 弦乐器琴弦的振动中包含基频与泛频,在一定位置上可抑制掉某些频率,便会出现演艺界定义的“泛音”效果。
Then we study the 802.11 protocol and use FPGA to realize the WEP algorithm of the MAC layer and function of the PHY layer, mainly in base band. 其次采用单片机+FPGA结构实现了无线局域网802.;11协议的MAC层WEP算法和物理层功能，其中物理层主要集中在基带部分。
The spectrum of amplitude modulated signal are two half magnitude spectrums of base band signal positive and negative shifted by a carrier or R. 调幅讯号之频谱为一半强度基频讯号之频谱分别正负位移一射频或载波之频率。
SPI register configuration platform achieve RS232 interface for data transmission equipment to the SPI bus to visit and control register of the base band signal processor. SPI寄存器配置平台实现了RS232接口设备到SPI总线的数据传输,从而完成对OFDM基带信号处理器中状态寄存器的访问与控制。
The spectrum of amplitude modulated signal are two half magnitude spectrums of base band signal positive and negative shifted by a carrier or R.F. frequency. 调幅讯号之频谱为一半强度基频讯号之频谱分别正负位移一射频或载波之频率。
A base band synchronized method based on MMSE criterion which can be used in MFSK,MDPSK even though QAM is presented. 本文提出了一种基于最小均方误差准则(MMSE)的基带软件码元同步算法,可以实现多进制FSK、DPSK甚至QAM等信号的码元同步。
This paper designed a programmable base band signal generator of variable bandwidth based on the combination of FPGA and DSS using large-seale integrated circuits. 利用大规模的集成电路技术，基于FPGA和DSS相结合，设计一种带宽可转换的，具有可编程的基带信号产生器。
A digital base band adaptive predistortion method to compensate nonlinear distortions introduced by a high-power amplifier (HPA) in orthogonal frequency division multiplexing (OFDM) system is proposed. 摘要提出了一种用于正交频分复用(OFDM)系统中补偿由大功率放大器引起的非线性失真的基带自适应预失真方法。
Lastly, the performance of method above are evaluated and compared based on the result of computer simulation of an IEEE802.11n base band system. 最后，我们通过IEEE802.;11n系统的仿真来比较和评估这几种方法的性能。
FFT algorithm used in OFDM base band processing is studied and errors in structure chart of Radix-23 SDF 64 points FFT in correlated papers are corrected. 64 points FFT can be implemented with only one complex multiplication and several additions. 对OFDM基带处理中的FFT算法进行了研究,修正了相关文献中Radix-23SDF64点FFT结构图中的错误,64点FFT只需一个复数乘法和若干加法即可实现。
This paper presents and algorithm suitable for the digital filter design in WCDMA forward channel, in which, the impulse response of the base band transmit pulse shaping filter has been descirbed. 介绍了一种适用于宽带码分多址 (WCDMA)前向信道中给定基带成形滤波器单位脉冲响应后设计SPT滤波器的方法。
In this example, cosine of uniform random matrix multiplied by a triangular time varying standard deviation as noise, and Sinc pulse time varying as a base band signal are summed to form a PM signal. 本例以均匀随机变数矩阵之馀弦乘以标准差为三角波时变代表杂讯，及时变滤波函数脉波代表基频讯号，合成基频讯号及杂讯和之相位调变讯号。
Generalized Multi-Carrier transmission is a wide subband scheme,in which the subbands are 1.28MHz wide and overlaps below-15dB.Firstly,the digital base band model of generalized multi-carrier system is given. 广义多载波并行传输方案是一种宽子带方案;每个子带带宽达到1.;28MHz且子带交叠在-15dB以下。
Having studied the digital down-conversion(DDC)process of IF signal before the base band process which follows A/D conversion in wireless communication,the paper puts forward a new idea of utilizing the FPGA to realize multi-channel digital signal DDC. 研究了无线通信接收机中,经A/D转换后到基带处理前的中频信号的下变频处理。提出了用FPGA实现多通道数字信号下变频的新设想。