Description: 空时分集Alamouti方案的matlab程序，还附有一个说明文档。对于理解STC很有帮助。-Alamouti Space Time Set matlab program procedures, the document is accompanied by a note. Helpful for understanding the STC. Platform: |
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Author:wu hao |
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Description: 无线通信中一个简单的发送分集，介绍了Alamouti空时块码！-This paper presents a simple two-branch transmit
diversity scheme. Using two transmit antennas and one
receive antenna the scheme provides the same diversity order
as maximal-ratio receiver combining (MRRC) with one transmit
antenna, and two receive antennas. Platform: |
Size: 199680 |
Author:与非 |
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Description: 差分空时传输分集的两篇重要文档仿真：
1. V. Tarkh and H. Jafarkhani, “A differential Detection scheme for transmit diversity,”；2. S. M. Alamouti, “A simple transmitter diversity scheme for wireless communications,” 。
关键词：差分；空时；协同；分集；MATLAB仿真-Differential space-time transmit diversity simulation two important documents: 1. V. Tarkh and H. Jafarkhani, " A differential Detection scheme for transmit diversity," 2. SM Alamouti, " A simple transmitter diversity scheme for wireless communications," . Keywords: Differential space-time Cooperative diversity MATLAB simulation Platform: |
Size: 16384 |
Author:亚军 |
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Description: 发射分集alamouti编码，并与无分集时比较，有明显性能提高-Alamouti coding transmit diversity, and diversity when compared with no, there are clear performance improvement Platform: |
Size: 1024 |
Author:duqiu314 |
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Description: 16qam
换句话说,信号可能仍然是
探测到,但以较低的质量。这是通常所说
对软失败。幸运的是,新的传-16qam simulink ser mimo
one of the receive chains fail, and the other receive
chain is operational, then the performance loss is on the order
of the diversity gain. In other words, the signal may still be
detected, but with inferior quality. This is commonly referred
to as soft failure. Fortunately, the new transmit diversity
scheme provides the same soft failure. To Platform: |
Size: 234496 |
Author:丁蓉 |
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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: Alamouti Code to achieve diversity without channel knowledg at the transmitter It is assumed that system contains 2 transmit antennas and one receive antenna. At the transmitter the data of a two consecutive slots will be considered. At the odd time slots, the first antenna transmit symbol 1 (s1) and the second ones will transmit symbol 2 (s2) simoltaneously. At the even time slots the -s2* and s1* will be transmited from the first and second antenna respectively. Study "WIRELESS COMMUNICATIONS" by Goldsmith for further information. Platform: |
Size: 1024 |
Author:hamed |
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Description: 16qam simulink ser mimo one of the receive chains fail, and the other receive chain is operational, then the performance loss is on the order of the diversity gain. In other words, the signal may still be detected, but with inferior quality. This is commonly referred to as soft failure. Fortunately, the new transmit diversity scheme provides the same soft failure. To Platform: |
Size: 57344 |
Author:varinder |
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Description: Alamouti Code to achieve diversity without channel knowledg at the
transmitter
It is assumed that system contains 2 transmit antennas and one receive
antenna. Platform: |
Size: 1024 |
Author:Sha |
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Description: Orthogonal STBC [4], [5] has been designed to achieve the spatial diversity offered by multiple transmit and/or receive antennas. The STBC
schemes proposed in [4] and [5] are designed for flat-fading channels,
which lead to a performance degradation in time- and frequency-selective channels. Our goal is to design efficient STBC schemes to counteract the effects of doubly-selective channels. The basic idea of the
proposed STBC for a 21 system is to multiplex the data sequence
in two data subsequences and to generate two orthogonal full-diversity
subchannels over doubly-selective channels. Then, we apply a scheme
that is similar to the Alamouti code. Platform: |
Size: 1024 |
Author:phuong |
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Description: 分支发射分集方案，2根发射天线、1根接收天线，最高信噪比为12dB，即仿真范围为0dB到12dB-Branch transmit diversity scheme, two transmit antennas, a receiving antenna, the maximum SNR is 12dB, the range for the simulation i.e. 0dB to 12dB Platform: |
Size: 3072 |
Author:尤文 |
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Description: A simple Space Time Code, suggested by Mr. Siavash M Alamouti in his landmark October 1998 paper – A Simple Transmit Diversity Technique for Wireless Communication, offers a simple method for achieving spatial diversity with two transmit antennas and receive antennas Platform: |
Size: 1024 |
Author:mamni |
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