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Viterbi
- 无线光通信;卷积交织;Viterbi并行译码 在误码率为10的负6次方 时,相对于最佳阈值 判决有约6.9dB的编码增益,与完美交织下的编码性能仅相差0.3dB-Wireless Optical Communication Convolutional Interleaver Viterbi decoding in parallel at the bit error rate of 10 negative 6 power when compared with the optimal
butterworthlpdf
- 巴特沃斯數字低通濾波器。採樣率8000HZ,fp=2100hz,fs=2500hz,Rp=3db,Rs=25db.-butterworth LPF
Measuring-Amplifier
- 在许多测试场合,传感器输出的信号往往很微弱,而且伴随有很大的共模电压(包括干扰电压),一般对这种信号需要采用测量放大器。测量放大器是一种高增益、直流耦合放大器,它具有差分输入、单端输出、高输入阻抗和高共模抑制比等特点。请设计一个测量放大器: 指标要求: a.当输入信号峰峰值uip-p=1mV时,输出电压信号峰峰值uop-p=1V。 b.输入阻抗:Ri>1MΩ c. 频带宽度: Δf(-3dB)=1Hz~1kHz d.共模抑制比: CMRR > 70dB -In
BFSKcoherentFromInternet
- BFSK 相关解调,与非相关解调不同!性能要好3dB-BFSK demodulator related, non-related demodulation different!
gao--pingzhi
- 声频功率放大器的参数如下: 1.放音频率(-3dB 电平)的额定范围为25~22000HZ; 2.立体声道的有效功率为5.5W × 2; 3.低频道的有效功率为22W; 4.额定输入电压0.25V; 5.在额定输入电压时谐波系数为0.12%; 6.电压放大系数为26dB; 7.静态电流120mA~150mA; 8.电源电压为11.7~14.4V。-The acoustic parameters of the power amplifier is as follow
Array-antenna-simulation
- 有关阵列天线的matlab仿真, 1、给出阵元的个数,阵元的间隔以及波长 2、计算方向图并绘制不同的方向图,有规律的排列 3、计算出主瓣宽度,3dB带宽,主瓣与第一旁瓣的幅度比(以dB作单位)-Array antenna matlab simulation, 1, to the number troupe, interval, and the wavelength of the array element 2, calculate the pattern and draw a
energyy-detection
- Bit Loading The amount of bits that can be carried per channel depends upon the SNR at that particular frequency, lower SNR levels may need more power to transmit data and since each frequency is subject to an overall power limit, those frequencies
report
- Bit Loading The amount of bits that can be carried per channel depends upon the SNR at that particular frequency, lower SNR levels may need more power to transmit data and since each frequency is subject to an overall power limit, those frequencies
123426
- 注水算法是根据某种准则,并根据信道状况对发送功率进行自适应分配,通常是信道状况好的时刻,多分配功率,信道差的时候,少分配功率,从而最大化传输速率。本文运用matlab通过对注水算法在mino系统中的三种不同的情况下进行了仿真,比较出在小信噪比时,相同信噪比下利用CSI的功率注水算法获得容量优于未知CSI的平均功率分配算法;相同容量下已知CSI信噪比比未知CSI时的信噪比小3dB.当信噪比增大到一定程度时,功率注水算法所获得的信道容量将收敛到平均功率分配的信道容量。-Water flooding
3dBWaveguide-splitters
- 查阅书籍天线与微波技术,理解传输线理论,散射参数S,设计3dB波导功分器的设计实例-Read books antenna and microwave technology, understand transmission line theory, the scattering parameter SDesign example of 3dB waveguide splitters