基于软干扰抵消的Turbo-BLAST迭代检测算法
Iterative Detection Scheme for Turbo-BLAST System Based on Soft Interference Cancellation
作者:陈小敏(南京航空航天大学 信息科学与技术学院, 江苏 南京 210016);徐大专(南京航空航天大学 信息科学与技术学院, 江苏 南京 210016);虞湘宾(南京航空航天大学 信息科学与技术学院, 江苏 南京 210016)
Author:(College of Info. Sci. and Technol., Nanjing Univ. of Aeronautics and Astronautics, Nanjing 210016,China);(College of Info. Sci. and Technol., Nanjing Univ. of Aeronautics and Astronautics, Nanjing 210016,China);(College of Info. Sci. and Technol., Nanjing Univ. of Aeronautics and Astronautics, Nanjing 210016,China)
收稿日期:2007-04-20 年卷(期)页码:2008,40(5):146-152
期刊名称:工程科学与技术
Journal Name:Advanced Engineering Sciences
关键字:Turbo-BLAST; 迭代检测; 干扰抵消; 最小均方误差准则; 软输入软输出(SISO); 多输入输出(MIMO)
Key words:Turbo-BLAST; iterative detection;interference cancellation;minimum mean square error;Soft Input Soft Output(SISO);Multiple-Input Multiple-Output(MIMO)
基金项目:江苏省自然科学基金资助项目(BK2003089);移动通信国家重点实验室开放课题资助项目(N200502)
中文摘要
Turbo-BLAST检测技术可有效克服通常V-BLAST系统应用所带来的空间干扰, 在分析其算法原理基础上, 分别研究了串行和并行Turbo BLAST算法在准静态瑞利衰落信道下的性能, 并对这两种算法进行了性能分析和比较, 给出了这两种算法的适用场合、存在的不足以及需要进一步改进的地方。 仿真结果表明, 在相同频谱利用率的条件下,串行Turbo BLAST方案的性能要优于并行Turbo-BLAST方案的性能, 而并行Turbo-BLAST方案则可以适用于自适应传输系统。
英文摘要
he Turbo-BLAST detection can effectively cancel the spatial interference from the conventional V-BLAST (Vertical Bell Lab’s Layered Space Time) system. On the basis of analyzing the algorithm principle of Turbo BLAST,the performances of serial Turbo-BLAST system and parallel Turbo BLAST system were researched and compared over quasi-static Rayleigh fading channel.Meanwhile,their suitable application situations,existing shortcoming and improvement in need were also pointed. The simulation results showed that the serial Turbo BLAST system is better than parallel Turbo-BLAST system under same spectrum efficiency,whereas the latter can be used for adaptive transmissions.
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