检索结果-南通市图书馆

A Method for Improving Power Distribution Characteristics of space time block codes

China Communications 2020年第6期17卷 223-234页

作者： Vahid Abbasi Mahrokh GShayesteh Department of Electrical Engineering Urmia UniversityUrmia 57561-15311Iran Wireless Research Lab. Elec.Eng.Dep.ACRISharif University of TechnologyTehran 11365-9363Iran

Improving power distribution characteristics of space time block codes(STBCs),namely peak to average power ratio(PAPR),average to minimum power ratio(Ave/min),and probability of transmitting"zero"by antenna,makes easier their practical *** this end,this study proposes to multiply full diversity STB C with a non-singular matrix in multiple input multiple output(MIMO)or multiple input single output(MISO)systems with linear or maximum likelihood(ML)*** is proved that the obtained code achieves full diversity and the order of detection complexity does not *** proposed method is applied to different types of *** bit error rate(BER)and power distribution characteristics of the new codes demonstrate the superiority of the introduced ***,lower and upper bounds on the BER of the obtained STBCs are derived for all *** proposed method provides trade-off among PAPR,spectral efficiency,energy efficiency,and BER.

关键词： full diversity linear receiver maximum likelihood peak to average power ratio power distribution space time block codes

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Performance of MIMO Systems Using space time block codes (STBC)

引用

Open Journal of Applied Sciences 2021年第3期11卷 273-286页

作者： Christopher M. Lau Fairleigh Dickinson University Teaneck NJ USA

Digital Communications, in relation to wireless networks, have taken off in recent years due to the expanding need to communicate faster and more efficiently. A popular way to achieve this is by using wireless Multiple Input Multiple Output (MIMO) communication systems. MIMO systems utilize space time block codes (STBC) as one of the leading ways to obtain higher data rates with limited bandwidth and power. With several STBC methods currently available, this paper analyzes simulations using Orthogonal space time block codes (OSTBC) in Rayleigh fading channels to evaluate the performance of MIMO systems. The selection to use a Rayleigh fading channel as a model for a non-line-of-sight (nLOS) environment is selected to mimic installations where a large number of signal paths and reflections are expected. All simulations are coded, generated and plotted using MATLAB resulting in graphical data representing the bit-error rate (BER) to signal-to-noise ratio (Eb/N0) or SNR. Each simulation captures how different configurations of key variables including code rate, diversity and antenna count can impact system performance. Four modulation schemes (BPSK, QPSK, 16-QAM and 64-QAM) are included in each simulation. Conclusive evidence based upon these simulations suggests higher diversity gains were achieved with a greater number of antennas. The most significant factor for increasing system performance was using a lower count of transmit antennas with a higher count of receive antennas.

关键词： Computer Analysis Digital Communications MATLAB MIMO Modulation Techniques Multiple Input Multiple Output Systems Orthogonal space time block codes OSTBC Rayleigh Fading Channels space time block codes STBC Wireless Communications Wireless Networks

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：