Description: 程序的主要功能是做了一定范围的信噪比下，对每个信噪比：随机信号QPSK调制；
根据Alamouti方案的矩阵进行编码；发送信号经过瑞利信道和加入高斯白噪声；
接收信号采用最大比合并的方法；最后对合并信号进行最大似然判决并求误符号率。
结果表明10^-3对应大约12->13dB-Procedure main function is to do a certain range of SNR for each signal to noise ratio: random signal QPSK modulation program in accordance with Alamouti coding matrix send signals through Rayleigh channel and adding Gaussian white noise received signal using maximal-ratio combining method Finally the combined signal and the maximum likelihood decision for symbol error rate. The results showed that about 10 ^-3 corresponds to 12-> 13dB Platform: |
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Author: |
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Description: 通过MATLAB软件；通过仿真得出性能曲线；从而比较bpsk的性能-The bit-error rate (BER) of binary phase-shift keying
in Rayleigh fading, using the Alamouti transmission scheme and
receiver selection diversity in the presence of channel-estimation
error, is studied. Closed-form expressions for the BER of log-likelihood
ratio selection, signal-to-noise ratio (SNR) selection, switchand-
stay combining selection, and maximum ratio combining are
derived in terms of the SNR and the cross-correlation coefficient
of the channel gain and its corrupted estimate. Two new selection
schemes, space–time sum-of-squares combining selection diversity
and space–time sum-of-magnitudes selection diversity, are
proposed and proven to provide almost the same performance as
SNR selection, but with much simpler implementations. The effects
of channel- Platform: |
Size: 340992 |
Author:刘小洋 |
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Description: 对多输入多输出信道的接受方式进行仿真，得到最大比合并法的性能。-For multiple-input multiple-output channel into the way the acceptance of simulation, get the maximum ratio combining method performance. Platform: |
Size: 57344 |
Author:李志 |
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Description: The results for 2×2 MIMO with Maximum Likelihood (ML) equalization helped us to achieve a performance closely matching the 1 transmit 2 receive antenna Maximal Ratio Combining (MRC) case. Platform: |
Size: 1024 |
Author:Umashankar Dewangan |
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Description: 因而本文基于MATLAB 针对Nakagami 衰落信道仿真了它的统计
特性,包括接收信号的复包络模拟和在具有最大比合并分集下的电平通过率及平均衰落持续时间的性能分析。重点在于理解和建立采用
MATLAB 进行信道信真的方法及对Nakagami 衰落信道本身统计特性的理解。-Based on MATLAB which Nakagami fading channel simulation for its statistical properties, including the received signal complex envelope simulation and has the maximum ratio combining diversity under the level crossing rate and average fade duration of the performance analysis. Emphasis is on understanding and the establishment of the channel using MATLAB and the letter is really way Nakagami fading channel statistical characteristics of their own understanding. Platform: |
Size: 299008 |
Author:至尊宝 |
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Description: 这是一篇很好的有关信道估计的文章，
可以用来快速的了解信道估计的基本内容-and MAI induced by multiple-input, multiple-output channels. In particular, this article
reviews the typical inverse filter criteria (IFC) based algorithm, super-exponential algorithm,
and constant modulus algorithm along with their relations, performance, and improvements.
Several advanced applications of these algorithms are illustrated, including
blind channel estimation, simultaneous estimation of multiple time delays, signal-tonoise
ratio (SNR) boost by blind maximum ratio combining, blind beamforming for
source separation in multipath, and multiuser detection for direct sequence/code division
multiple access (DS/CDMA) systems in multipath. Platform: |
Size: 1144832 |
Author:renkill |
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Description: MATLAB仿真rake接收机，分三种方式：等增益合并，最大比合并和选择性合并-MATLAB simulation rake receiver, divided three ways: equal gain combining, maximum ratio combining and selective merge Platform: |
Size: 1024 |
Author:Raymond |
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Description: 最大比合并功能实现，简单代码，容易看懂，MATLAB源代码-Functions to achieve the maximum ratio combining, simple code, easy to understand Platform: |
Size: 1024 |
Author:Jenney two |
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Description: 用Verilog HDL语言实现一个Rake接收机的最大比合并准则，其中3路输入数据是并行相关输出-Verilog HDL language with a Rake receiver maximum ratio combining criteria, of which 3 related to the parallel input data is output Platform: |
Size: 1024 |
Author:张茂磊 |
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Description: thesis to implement all compulsory features of
the WiMAX OFDM physical layer specified in IEEE 802.16-2004 in Matlab
Simulink. Optional space-time coding for more than one transmit antenna is
implemented to allow performance investigations in various MIMO scenarios.
Likewise, a maximum ratio combining diversity scheme is implemented in the
receiver for the same purpose.-thesis is to implement all compulsory features of
the WiMAX OFDM physical layer specified in IEEE 802.16-2004 in Matlab
Simulink. Optional space-time coding for more than one transmit antenna is
implemented to allow performance investigations in various MIMO scenarios.
Likewise, a maximum ratio combining diversity scheme is implemented in the
receiver for the same purpose. Platform: |
Size: 1855488 |
Author:zyad |
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Description: 协作通信中，运用放大转发的误码率分析。运用最大比合并-Collaborative communication, the use of forward error rate analysis of amplification. The use of maximum ratio combining Platform: |
Size: 1024 |
Author:yangchao |
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Description: SM、V-BLAST、MRC系统仿真比较 SM、V-BLAST、MRC系统6bits传输仿真结果-Normalized maximum ratio combining (NMRC) detection algorithm, NMRC algorithm for general channels, flat fading channel Tan Ruili, Gaussian white noise, the receiver has received a perfect channel state information. Platform: |
Size: 17408 |
Author:刘晓艳 |
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Description: 主函数Alamouti(Nr,max_snr,max_err_symbol,symbol_per_frame)
调用函数QpskMapping(psudo_bit_sequence)－－二进制数据到QPSK信号的变换
调用函数RayleighCH(Nr,Nt)－－瑞利衰落信道模拟
仿真示例：
Alamouti(1,12,20,24)
说明：
1.2根发射天线、1根接收天线
2.最高信噪比为12dB，即仿真范围为0dB到12dB
3.在每个信噪比条件下,误符号数超过20即停止该信噪比条件下的仿真
4.每一帧数据为24个QPSK符号
综合仿真函数SimAlamouti(max_snr,max_err_symbol,symbol_per_frame)
具有一根接收天线系统的SER性能与二根接收天线的系统SER性能比较
SimAlamouti(12,20,24)
参数说明：
1.max_err_symbol的取值直接影响了仿真的精度：取值越大，精度越高，误符号率曲线也更平滑；但需更长的仿真
时间
2.一般max_snr小于15dB，程序中snr为信号噪声功率比
3.本程序仿真时未考虑帧与帧之间，信道衰落系数的相关性，因此symbol_per_frame一定程度上表征了信道相关时
间的大小，即在symbol_per_frame个QPSK信号发送时间内，信道衰落系数是不变或缓变的，而在下一帧数据中，
信道衰落系数可以认为已变成另一值
4.本程序假定在接收端已通过信道估计获得信道衰落系数-ALAMOUTI performs Monte-Carlo simulation and estimates Bit Error Rate
(BER) of Alamouti Scheme [1] over Rayleigh channel. The scheme presumes
2 transmit (Tx) and arbitrary number of receive (Rx) elements.
If Rx=1 (one receive element) ALAMOUTI is transformed to the order 2
transmit diversity scheme with Maximum Ratio Combining (MRC). The
modulation format is MPSK with arbitrary order M which can be
controlled by user. Platform: |
Size: 203776 |
Author:chenyiren |
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Description: 该程序是使用Matlab仿真协同通信的DF（解码转发）基本性能，基本模型S-R-D三个节点，接收端使用MRC（最大比合并）。固定DF由于SR信道的错误，其性能受到限制，在大SNR情况下不能获得有效分集。而当SR距离足够近的时候，可能获得一定的分集增益。-The program is a cooperative communication using Matlab simulation DF (decode forwarding) basic performance, the basic model of the SRD three nodes, the receiver uses the MRC (maximum ratio combining). Fixed DF error of the SR channel, its performance is limited, can not obtain a valid diversity in the large SNR case. When the SR close enough, you may get some diversity gain. Platform: |
Size: 10240 |
Author:梁家明 |
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Description: 空时编码 OSTBC系统中4发2收 采用 最大比合并 在matlab环境下运行 -Space-Time Coding OSTBC system 4 2 admission using the maximum ratio combining in Matlab environment running Platform: |
Size: 1024 |
Author:zhang |
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Description: 该程序是使用Matlab仿真协同通信的DF（解码转发）基本性能，基本模型S-R-D三个节点，接收端使用MRC（最大比合并）。固定DF由于SR信道的错误，其性能受到限制，在大SNR情况下不能获得有效分集。而当SR距离足够近的时候，可能获得一定的分集增益-The program is a cooperative communication using Matlab simulation DF (decode forwarding) basic performance, the basic model of the SRD three nodes, the receiver uses the MRC (maximum ratio combining). Fixed DF error of the SR channel, its performance is limited, can not obtain a valid diversity in the large SNR case. When the SR close enough, you may get a certain amount of diversity gain Platform: |
Size: 1024 |
Author:高华 |
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Description: 最大比合并能获得最大信噪比的证明及相关对比-The maximum ratio combining can get certificates and relevant comparison of the maximum signal to noise ratio Platform: |
Size: 174080 |
Author:Chico |
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Search - maximum ratio combining