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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
- 积分：1
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OFDM
给出了OFDM在卫星通信中的系统框图并
在Simulink中仿真实现，利用改进的CMA恒模算法进行盲均衡处理，来去除时变卫星信道对信号的影响,基于4阶累积量的方法
将OFDM信号与其他调制类型信号区分开来(OFDM is given in the satellite communication system block diagram and Simulation in Simulink using the modified constant modulus algorithm CMA for blind equalization, to remove the time-varying satellite channel on the signals, based on 4-order cumulant method OFDM signals and other types of signal modulation to distinguish)
- 2020-12-02 20:19:26下载
- 积分：1
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ctorrent-win32
ctorrent源码实现，良好的源码架构和精干的代码组织。
(ctorrent source implementation of good source code structure and lean tissue.)
- 2011-09-05 20:27:15下载
- 积分：1
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qpsk
说明： QPSK通过瑞利信道的MATLAB仿真 包括高斯白噪声和瑞丽衰减信道(QPSK_Rayleigh fading Both the AWGN channel and Rayleigh fading channel)
- 2020-02-04 23:07:53下载
- 积分：1
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TestWebServer
用visaul basic 编写的,连接Wsdl服务的例子(Written visaul basic example connect Wsdl service)
- 2013-03-07 13:46:27下载
- 积分：1
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OWDM_16QAM_64
OWDM simulation QAM 16/64
- 2013-05-20 06:43:49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
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杂波环境下基于EKF的多传感器的数据融合
多传感器多目标数据融合的ＩＭＭ＿ＭＳＰＤＡ关联算法(IMMMSPDA association algorithm for multi sensor multi target data fusion)
- 2020-11-26 15:59:32下载
- 积分：1
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LMS_xuexiquxian
说明： LMS自适应信道均衡程序以及学习曲线绘制，程序为matlab代码。(LMS adaptive channel equalization process and the learning curve drawing, procedures for the matlab code.)
- 2008-11-03 20:20:10下载
- 积分：1
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ldpc123
Matlab仿真实现LDPC算法。BPSK调制，适用于AWGN信道(Matlab simulation implements the LDPC algorithm. BPSK modulation, suitable for the AWGN channel)
- 2018-03-04 12:57:52下载
- 积分：1
