| 基于STBC的多发射天线选择的传输性能研究 |
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| 引用本文： | 庄铭杰,林比宏,彭国祥.基于STBC的多发射天线选择的传输性能研究[J].中国航海,2005(4):65-68,74. |
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| 作者姓名： | 庄铭杰 林比宏 彭国祥 |
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| 作者单位： | 1. 集美大学,福建,厦门,361021
2. 泉州师范学院,福建,泉州,362000 |
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| 基金项目： | 福建省教育厅科研资助项目(JA031030)，泉州市科技计划重点项目(2004G28) |
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| 摘 要： | 对于多发单收的天线系统(MISO),在已知信道状态信息(CSI)和等发射天线功率分配的情况下,利用反馈的CSI,对采用正交空时组码(STBC)的N选择n(N≥n,即n-NTx)的MISO系统进行研究。给出了求解选择性信道的序系数,推导了n-NTx系统的边缘概率密度函数(pdf)。在独立的平坦瑞利衰落信道中,完整地导出了n-NTx系统关于BPSK/QPSK调制的比特误码率(BER)性能界的理论表达式。为了与没有天线选择(即满复杂度)的系统进行性能比较,给出了BER的理论分析值和蒙特卡洛仿真结果,它们的结果均表明多天线选择系统能极大地提高系统的性能。
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| 关 键 词： | 船舶 舰船工程 多发单收天线系统 研究正交空时组码 瑞利衰落信道 概率密度函数 比特误码率 |
| 文章编号： | 1000-4653（2005）04-0065-04 |
| 收稿时间： | 2005-09-28 |
| 修稿时间： | 2005-09-28 |
Transmission Performance Study of Multiple Transmit Antenna Selection Based on STBC |
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| ZHUANG Ming-jie,LIU Bi-hong,PENG Guo-xiang.Transmission Performance Study of Multiple Transmit Antenna Selection Based on STBC[J].Navigation of China,2005(4):65-68,74. |
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| Authors: | ZHUANG Ming-jie LIU Bi-hong PENG Guo-xiang |
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| Institution: | 1. Jimei University, Xiamen, 361021, China; 2. Quanzhou Normal University, Quanzhou, 362000, China |
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| Abstract: | For a multiple input(MTx) single output(1Rx)(MISO) communication system,the system in which orthogonal space-time block coding(STBC) selection on n best transmit antennas out of N transmit antennas(N>n,i.e.n-NTx) is adopted is studied by applying feedback channel state information(CSI) in the case of known CSI and equal transmit power allocation.The marginal probability density function(PDF) of n-NTx system is deduced and an approximate closed-form expression of Bit-Error Rate(BER) bound for BPSK/QPSK is derived in detail over the uncorrelated Rayleigh fading channels.In order to compare with the performance of the system without n-NTxs,the analytical results and computer Monte-Carlo simulation results of BER for BPSK/QPSK modulation are also presented.Some suggestions are given for reducing BER and increasing transmission capacity. |
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| Keywords: | Ship Naval engineering MISO Study STBC Rayleigh fading channel PDF BER |
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