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ra
说明: repeat-accumulate codes (RA codes)
- 2017-03-24 15:05:21下载
- 积分:1
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path loss
无线信道建模,路径损耗及正态阴影模型源代码,可出图,(Path loss Wireless channel modeling)
- 2019-05-07 17:39:48下载
- 积分:1
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201112
一篇关于四桥臂有源电力滤波器关键技术研究的文章(research on the key issues of the four-leg active power filter)
- 2013-12-16 16:56:47下载
- 积分:1
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wdjkxt
温度监控系统的设计 温度监控系统的设计(Temperature monitoring system design temperature monitoring system)
- 2008-12-09 20:49:33下载
- 积分:1
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5714272
说明: 基于matlab的脉冲编码仿真,pcm 模块仿真系统等(Pulse coding Simulation based on matlab, Simulation system of pcm Module and so on)
- 2019-03-27 21:12:09下载
- 积分:1
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VBLASTMMSE
说明: 仿真V-BLAST结构MMSE检测算法性能,调制方式为QPSK(The performance of V-BLAST MMSE detection algorithm is simulated, and the modulation mode is QPSK)
- 2021-01-15 11:04:14下载
- 积分:1
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KALMAN-Channel-estimation
MIMO-OFDM基于卡拉曼滤波的信道估计算法,附带多普勒信道建模和算法程序(MIMO-OFDM Karaman filtering based channel estimation algorithm, incidental the Doppler channel modeling and algorithm)
- 2021-03-31 15:39:09下载
- 积分:1
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control-tool-code
control tool of mimo transfer function and controller design with LQR problem
- 2014-11-18 19:21:24下载
- 积分:1
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UWB_Channel_IEEE_802_15_3a
UWB_Channel_IEEE_802_15_3a.rar是用MATLAB对UWB信道进行仿真的实例,所仿真的信道是UWB的标准信道模型。(UWB_Channel_IEEE_802_15_3a.rar is used for UWB channel MATLAB simulation examples, the channel simulation is the standard UWB channel model.)
- 2021-01-07 09:08:52下载
- 积分:1
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BPSK调制仿真
说明: bpsk调制仿真,可直接用
1、数字调制方法
数字调制就是把数字基带信号的频谱搬移到高频处,形成适合在信道中传输的带通信号。基本的数字调制方式有振幅键控(ASK)、频移键控(FSK)、绝对相移键控(PSK)、相对(差分)相移键控(DPSK)。在接收端可以采用想干解调或非相干解调还原数字基带信号。
数字信号的传输方式分为基带传输和带通传输。然而,实际中的大多数信道(如)无线信道具有丰富的低频分量。为了使数字信号在带通信道中传输,必须用数字基带信号对载波进行调制,以使信号与信道的特性相匹配。(1, digital modulation method
Digital modulation is the transfer of the spectrum of a digital baseband signal to a high frequency to form a bandpass signal suitable for transmission in the channel. The basic digital modulation methods are amplitude keying (ASK), frequency shift keying (FSK), absolute phase shift keying (PSK), and relative (differential) phase shift keying (DPSK). At the receiving end, the digital baseband signal can be restored by using dry demodulation or non-coherent demodulation.
Digital signal transmission methods are divided into baseband transmission and bandpass transmission. However, most channels in practice, such as wireless channels, have rich low frequency components. In order for a digital signal to be transmitted in a band channel, the carrier must be modulated with a digital baseband signal to match the signal to the characteristics of the channel.)
- 2019-05-28 10:46:01下载
- 积分:1