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5824991

于 2019-03-28 发布文件大小:3KB

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系统分别对无线通信中的几种重要的多址接入协议进行了仿真,包括pure-ALOHA,slotted-ALOHA,CSMA以及(Several important multiple access protocols in wireless communication are simulated by the system, including pure-ALOHA, slotched-ALOHA, CSMA, and the like.)

文件列表：

3main.m, 5106 , 2008-02-28
npcsma.m, 2487 , 2008-02-28
paloha.m, 2162 , 2008-01-23
saloha.m, 2245 , 2008-01-22
snpisma.m, 3320 , 2008-01-22

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xunhuanpuguji
基于matlab实现的循环谱估计算法，可以对具有循环平稳特点的信号进行参数估计(Matlab-based spectral estimation algorithm to achieve the cycle, you can have the characteristics of the signal cyclostationary parameter estimation)

2009-12-01 09:35:02下载

积分：1
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

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mini2440-qtopia
mini2440上qtopia应用程序开发步骤(arm-qtopia版本)(mini2440 steps on the qtopia application development (arm-qtopia version))

2009-12-04 15:49:16下载

积分：1
LMS
LMS时域均衡算法,多径信道+AWGN信道，很好的抑制了多径干扰(This is a LMS equalizer and the channnel is Multi_path channel and AWGN channel, it gives Error convergence curve)

2017-11-02 09:23:46下载

积分：1
pts_papr
一种PTS算法在OFDM系统中降低PAPR，并且仿真出BER曲线。(A PTS algorithm in OFDM systems reduce PAPR, and simulation out BER curve )

2012-02-26 13:10:10下载

积分：1
卫星通信中数字调相信号调制方式识别方法研究
说明：针对数字卫星常用的 7 种通信信号调制方式(QPSK、8PSK、16QAM、32QAM、64QAM、16APSK、32APSK)，对零中心归一化瞬时幅度谱密度最大值、四次方谱、幅度、高阶累积量四种特征参数进行了分析，提出了一种联合特征参数的信号调制识别方法．(Aiming at seven communication signal modulation modes commonly used in digital satellite (QPSK, 8PSK, 16QAM, 32QAM, 64QAM, 16APSK and 32APSK), four characteristic parameters of zero-center normalized instantaneous amplitude spectral density, quadratic spectrum, amplitude and high-order cumulant are analyzed, and a signal modulation recognition method of joint characteristic parameters is proposed. Method.)

2020-06-21 09:20:02下载

积分：1
CDMA
CDMA 系统仿真平台，有完整注释，对了解CDMA系统级仿真很有帮助(CDMA System Simulation)

2011-11-14 20:42:44下载

积分：1
msk
说明：利用锁相环来实现MSK信号的定时同步，采用的是gardner算法(Using phase-locked loop to achieve timing synchronization of MSK signal, Gardner algorithm is adopted.)

2021-04-07 20:19:01下载

积分：1
自由空间路径损耗
这是自由空间路径损耗的代码。里面有多个m文件(This is the code of path loss in free space. There are multiple M files in it.)

2020-06-17 12:00:01下载

积分：1
DS-CDMAsystem
DS-CDMA系统的,直扩通信系统里基于不同扩频码不同，系统的误码率比较。其中基于多相正交序列的误码率最低。(DS-CDMA system)

2013-05-15 15:31:49下载

积分：1

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