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shuixiazhikuoxitong
水下扩频系统研究,本系统采用直接扩频序列方式,在有多径水声信道和无多径的水声信道进行研究比较(Underwater spread spectrum system, the system uses direct sequence spread-spectrum approach, in a number of Acoustic Channel Drive and non-multi-path acoustic channel for the study of comparative)
- 2021-03-11 14:29:26下载
- 积分:1
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2008_5
在三条径的瑞利信道中,对于直接序列扩频:
(1) 请设计DS-CDMA一种具体的码分导引辅助的信道估计方法,接收机分别采用等均益合并、最大比合并。用Simulink进行仿真,测量BPSK的误码率性能,画出比特信噪比与信道估计均方误差的关系曲线,画出比特信噪比与误码率的关系曲线,请解释在误码率为0.01时,两种合并方式所表现的不同的物理意义。
(2) 设频率已经同步,请设计DS-CDMA一种具体的单停顿滑动相关时间同步方法,用Simulink进行仿真(自己编写代码S-Function方式),分析所设计方案的时间同步精度,画出比特信噪比与捕获概率的关系曲线。
(3) 设时间已经同步,请设计DS-CDMA一种具体的频率方法,用Simulink进行仿真(自己编写代码S-Function方式),画出比特信噪比与频率同步误差的关系曲线。
(err)
- 2020-12-23 10:29:06下载
- 积分:1
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PCALEv1073A_FI
automatic link establishment radio software
- 2019-02-14 17:55:00下载
- 积分:1
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matlab仿真.tar
说明: 了解多模光纤传播模式,了解电场磁场分布,了解模式光斑(Understand the multimode fiber propagation mode, understand the electric field magnetic field distribution, and understand the pattern spot)
- 2019-01-18 09:39:37下载
- 积分:1
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STC单片机多机联级串口程序可实现.416路控制
说明: STC单片机多机连级串口程序可实现.416路控制. 串口和485都可以使用、 一个程序可以用在26块控制板上,通过拔码开关给板子编号,每块板可以过滤分析所接收到不同的代码。进行继电器的动作,能返回数据,因使用定时器发送返回,不会阻塞或者代码错乱、可以 用在中控,物联网,等各种控制场合。修改代码后,能达到上千路的控制。(STC single-chip microcomputer multi-level serial port program can realize 416 channel control. Serial port and 485 can be used. One program can be used on 26 control boards. Each board can filter and analyze different codes received by numbering the boards with the pull-out switch. Relay operation can return data, because the timer is used to send the return, it will not block or code confusion, and can be used in central control, Internet of things, and other control occasions. After modifying the code, it can achieve thousands of control.)
- 2020-03-06 23:07:17下载
- 积分:1
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Butterworth-MITRES_6_007S11_lec24
Butterworth filter design for digital signal processing
- 2012-11-15 03:00:54下载
- 积分:1
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OQAM_OFDM_IOTA
基于OFDM/OQAM 的IOTA原型滤波器设计(IOTA prototype filter design based on OFDM/OQAM)
- 2020-07-02 18:20:01下载
- 积分:1
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MIMO-OFDMChannelEstimationBasedonCombPilot
mimo-ofdm系统基于梳状导频的信道估计,使用最小二乘法,线性内插。(mimo- ofdm system based on comb-Pilot channel estimation, the use of least squares linear interpolation.)
- 2007-06-13 21:28:51下载
- 积分:1
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4up-SensorNetHW
Wireless Sensor Network (WSN)
Platforms
- 2009-09-07 02:04:31下载
- 积分:1
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STM32F4xx_DSP_StdPeriph_Lib_V1.8.0
说明: stm32f4xx 官方标准外设固件库 ,含有多种类型的设计案例(Stm32f4xx official standard peripheral firmware library, containing a variety of design cases)
- 2019-02-22 18:46:45下载
- 积分:1