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main7
matlab仿真LDPC码，对采样点数进行PPM编码，此代码加了保护时隙(The LDPC code is simulated by matlab, and the sampling points are encoded by PPM, which adds protection time slot.)
- 2020-06-17 07:40:01下载
- 积分：1
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simulink
关于通信系统的simulink仿真，包括基本介绍，数字信号传输，信道编码，OFDM方式，MIMO系统仿真(On the communication system simulink simulation, including a basic introduction to digital signal transmission, channel coding, OFDM mode, MIMO system simulation)
- 2013-10-14 10:41:04下载
- 积分：1
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WSAChat
Basic C, WSA 2.0 chat server and client.
- 2010-03-16 13:11:09下载
- 积分：1
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1123
基于导频的OFDM信道估计的硕士论文一篇，研究信道估计的各种方法(OFDM channel estimation based on pilot master' s thesis a study of channel estimation the various methods)
- 2012-07-26 11:59:34下载
- 积分：1
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chatroom
该程序可以实现多个客户端互相通讯，如同聊天室(Multiple clients can communicate with each other, just like chat rooms)
- 2017-08-01 09:49:36下载
- 积分：1
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RAKEreceiver_CDMA
说明： 使用MATLAB实现CDMA系统的RAKE接收机，并给出了合并后的系统性能。并给出将数字调制改成QPSK时修改后的程序。(RAKE receiver for CDMA system)
- 2020-04-17 17:50:08下载
- 积分：1
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KQSQDAJ
关于信道估计的程序,用MATLAB实现,包括导频的插入提取,FFT IFFT ,循环前缀的加入提取()
- 2018-02-01 12:21:18下载
- 积分：1
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MIMO_OFDMA_2T1R_CDD
关于移动通信中MIMO中的CDD发射分集算法( CDD transmit diversity algorithm on MIMO in the Mobile communication)
- 2012-05-11 01:02:39下载
- 积分：1
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Multiuser-OFDM-with-Adaptive
Multiuser OFDM with Adaptive
Subcarrier, Bit, and Power Allocation BY- J.Yashashchandra.Rao (jyashashchandra@yahoo.com)
- 2011-08-18 20:16:39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
