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CCSDS_LDPC
说明: CCSDS推荐的LDPC编码方案,一系列参考标准,很好哦!(CCSDS recommended LDPC coding scheme, a series of reference standards, very good!)
- 2020-06-15 23:00:02下载
- 积分:1
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IIR
使用matlab实现设计IIR滤波器:冲激不变法、双线性变换法
设计一个巴特沃思低通滤波器,其技术指标为:3dB带宽为,阻带截止频率为,阻带衰减大于30dB,采样间隔T=10us。
1)用冲激响应不变法
2)用双线性变换法设计
3)用FIR的矩形窗函数设计
二、用双线性变换法分别设计低通、高通、带通、带阻四种滤波器。模拟滤波器带原型分别为切比雪夫滤波器和椭圆滤波器,采样率Fs=20kHz,指标如下:
1)低通:通带0~4 kHz,阻带5 kHz,通带衰减Rp=0.5dB,阻带衰减As=10dB。
2)高通:阻带0~4 kHz,通带5 kHz,通带衰减Rp=0.5dB,阻带衰减As=10dB。
3)带通:通带2kHz~4 kHz,阻带0~1.5 kHz,4.5kHz以上,通带衰减Rp=0.5dB,阻带衰减As=10dB。
4)带阻:阻带2kHz~4 kHz,通带0~1.5 kHz,4.5kHz以上,通带衰减Rp=0.5dB,阻带衰减As=10dB。(Using MATLAB to implement the design of IIR filters: impulse invariant and bilinear transformation)
- 2018-01-06 15:19:26下载
- 积分:1
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MATLAB_OFDM
基于MATLAB的OFDM系统仿真及性能分析的一篇论文。内含matlab仿真程序,有循环前缀,信道估计。(OFDM based on MATLAB system simulation and performance analysis of a thesis. Intron Matlab simulation program, cyclic prefix, channel estimation.)
- 2007-06-13 16:08:58下载
- 积分:1
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51单片机rc522 射频的程序和与电路图
完整的射频门禁程序源码包含rc522的驱动程序以及相应的显示程序(There had been many cases about RFID-based access control systems. In this paper, long-distance radio frequency technology was used and image-recognition technology was joined, these technologies were used to realize the automation of access management.)
- 2017-12-20 21:40:17下载
- 积分:1
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VBCRC16
自己做的CRC16校验例子,输入16进制数据,数据之间用空格,得到校验字节(The CRC16 checksum own example, enter the hexadecimal data, with a space between the data check byte)
- 2012-10-12 08:45:27下载
- 积分:1
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eloowNood
Good e-book on WiMAX, published in 2007,
- 2019-03-28 00:45:08下载
- 积分:1
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yidongtongxin
移动通信学习课件,非常详细,适合初学者,参考价值很高!1(Mobile learning courseware, very detailed, suitable for beginners, very useful! 1)
- 2010-05-15 09:55:23下载
- 积分:1
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123
为了提高MIMO-OFDM系统的数据传输率和频谱利用率,提出一种新的自适应算法。该算法在保证信道质量所需误码率和总发射功率的前提下,按照各个子载波衰落程度动态地分配比特和功率,使系统的总数据传输速率最大。理论分析得出,该算法降低了系统运算复杂度,能很大地改善系统的整体性能。(In order to improve data transmission rates and spectrum efficiency of MIMO-OFDM systems,this paper proposes a new adaptive algorithm. While the channel transmission quality to meet the requirements of a certain target BER(bit error rate) and total emissive power,according to each sub-carrier decline degree to adjust each sub-carrier modulation method freely,try to minimize the total data rate of system. Theory analysis shows the algorithm can reduce system complexity and improve overall performance of the ...)
- 2011-09-05 15:22:03下载
- 积分:1
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s_aloha
在OPNET上搭建场景,仿真接入算法,使用的是S-ALOHA接入算法,以仿真吞吐量、时延等性能(Build a scene on OPNET, simulation access algorithm, using the S-ALOHA access algorithm to simulate the throughput, latency and other performance)
- 2020-10-23 11:07:23下载
- 积分:1
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vectors16
vectors 16 向量重新影射 一次引导,2次引导
- 2009-05-08 22:04:24下载
- 积分:1