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LFM
针对传统线性调频(LFM)信号参数估计算法中复杂的搜索和计算问题，提出了一种不需要参数搜索的快速
LFM信号参数估计算法。该算法先用希尔伯特变换估计LFM信号瞬时相位，再用二次相位函数拟合LFM信号瞬
时相位从而得到初始频率和调频斜率的估计(The traditional linear frequency modulation (LFM) signal parameter estimation algorithms and computational complexity of the search problem, we propose a fast search without LFM signal parameter estimation algorithm. The algorithm first estimated with the Hilbert transform of LFM signal instantaneous phase, and then the second phase of LFM signal instantaneous phase function fitting to obtain the initial estimates of the frequency and chirp rate)
- 2020-09-01 17:28:10下载
- 积分：1
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qouging-V4.1
There ULA CRB curve, Least-squares regression analysis algorithm, Transceiver contains two client programs.
- 2017-10-31 20:09:07下载
- 积分：1
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D2D
D2D的自适应链路仿真，可根据信道状态，自选自调制方式(D2D adaptive link simulation, according to the channel state, optional self modulation)
- 2017-11-09 15:30:59下载
- 积分：1
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-BPSK
天线组阵中基于循环相关的BPSK信号合成方法研究(Antenna array study group cycle related BPSK signal synthesis method based on)
- 2013-12-20 13:36:46下载
- 积分：1
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LDPC__64QAM仿真程序___matlab
说明： LDPC 64QAM仿真程序 matlab 有具体的编码和解码源程序，对信道编码的人很有帮助(LDPC 64QAM simulation program matlab has specific coding and decoding source program, which is very helpful to channel coding people)
- 2020-03-19 17:19:01下载
- 积分：1
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BPSK调制仿真
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
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SelectFrq
通信信道仿真，频率选择性衰落信道的ｍａｔｌａｂ仿真程序,对初学者比较有用(Communication channel simulation, frequency selective fading channel matlab simulation program)
- 2021-04-05 16:59:04下载
- 积分：1
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Low-Complexity-PAPR-Reduction-Technique-for-STBC-
Selective mapping algorithm is proposed to reduce the peak-to-average power ration (PAPR) in MIMO-OFDM system.
It is proved that the conjugate symbols on two antennas have the same PAPR property with orthogonal space-time block coded (STBC). By using the characteristic, the computational
complexity cost and the side information (SI) is significantly
reduced compared with the concurrent SLM algorithm.
Simulation results demonstrate that the performance of the proposed algorithm outperforms the conventional concurrent
SLM algorithm.
- 2014-01-01 06:04:45下载
- 积分：1
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20070313_synchronizationMutex
同步机制的解决方法之一(one of the solutions)
- 2007-04-06 11:59:02下载
- 积分：1
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xws-security-3.0
xws-security-3.0 ws安全包3.0版本(xws security 3.0 for development)
- 2014-04-23 16:57:39下载
- 积分：1
