多用户Alamouti-MRC安全短信传输系统误码率性能分析

2012 15th International Conference on Computer and Information Technology (ICCIT) Pub Date : 2012-12-01 DOI:10.1109/ICCITECHN.2012.6509717

T. Ahmed, M. M. Ali, S. Ullah

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引用次数: 0

摘要

研究了采用多用户Alamouti空时分组编码(STBC)和最大比组合(MRC)方案的双发多收无线通信系统中天线分集对安全短信传输的影响。正在研究的FEC编码Alamouti-MRC传输系统实现了RSA加密算法，并在加性高斯白噪声(AWGN)和瑞利衰落信道上部署了各种多级数字调制(16-PSK, 16-DPSK和16-QAM)技术。研究发现，在没有接收天线分集的情况下，系统在16-DPSK方案中表现出较差的性能，而在16-QAM方案中表现出较好的性能。随着接收天线数量的增加，系统性能得到了显著提高。性能分析表明，在16-QAM数字调制下，采用Alamouti-MRC方案(6个接收天线)，系统在显著的低信噪比(SNR)值下仍能提供出色的性能。

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BER performance analysis of a multi user Alamouti-MRC system on secured text message transmission

This paper investigates the effect of antenna diversity for a double transmit and multiple receive antenna supported wireless communication system that employs multi user Alamouti's space time block coding (STBC) and maximal ratio combining (MRC) scheme on secured text message transmission. The FEC encoded Alamouti-MRC transmission system under investigation implements RSA cryptographic algorithm and deploys various multi-level digital modulations (16-PSK, 16-DPSK and 16-QAM) techniques over an Additive White Gaussian Noise (AWGN) and Rayleigh Fading Channels. It has been observed from the study that in case of without receive antenna diversity the system shows comparatively worst performance in 16-DPSK scheme and satisfactory performance in 16-QAM. It is noticeable that the system performance is improved with increase in number of receive antenna. The performance analysis shows that with implemented Alamouti-MRC scheme (6 receive antenna) under 16-QAM digital modulation, the system provides excellent performance over a significant low signal to noise ratio (SNR) values.

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2012 15th International Conference on Computer and Information Technology (ICCIT)

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