| 基于SP-LCCMA的STBC MC-CDMA系统盲信道估计 |
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| 引用本文： | 赵发勇,;酆广增.基于SP-LCCMA的STBC MC-CDMA系统盲信道估计[J].南京邮电学院学报(自然科学版),2008(4):48-52. |
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| 作者姓名： | 赵发勇 ;酆广增 |
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| 作者单位： | [1]南京邮电大学通信与信息工程学院,江苏南京210003; [2]阜阳师范学院物理与电子学院,安徽阜阳236032 |
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| 基金项目： | 国家自然科学基金（60472104）资助项目 |
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| 摘 要： | 研究了空时编码多载波码分多址系统（STBC MC—CDMA）盲信道估计技术。根据信道位于信号子空间的特点，提出基于信号子空间投影线性约束恒模算法（SP—LCCMA）的盲信道估计，避免了噪声子空间信道估计的缺点，将估计信道应用于STBC MC—CDMA系统多用户检测。仿真结果表明，提出算法的收敛速度和信干噪比（SINR）性能优于一般恒模算法。
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| 关 键 词： | STBC MC-CDMA 多用户检测 盲信道估计 子空间投影线性约束恒模算法 |
Blind Cannel Estimation for STBC MC-CDMA Systems Based on SP-LCCMA |
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| Affiliation: | ZHAO Fa-yong ,FENG Guang-zeng( 1. College of Communication and Information Engineering , Nanjing University of Posts and Telecommunications , Nanjing 210003, China; 2. Department of Physic and Electronic, Fuyang Normal College , Fuyang 236032, China) |
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| Abstract: | The paper studies blind channel estimation technique for space-time block codes multi-carrier code division multiple access （STBC MC-CDMA）. We present a blind channel estimation algorithm based on subspace projected linear constraint constant modulus algorithm （SP-LCCMA） for the reason that the channel must belong to signal subspace, which can avoid the shortcoming of subspace based channel estimation. We apply the algorithm to STBC MC-CDMA multi-user detection. Simulation indicates that the proposed algorithm has faster convergence rate and better SINR performance than those of the traditional CMA. |
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| Keywords: | Space-time block codes multi-carrier code division multiple access Multi-user detection Blind channel estimation Subspace projected linear constraint constant modulation algorithm |
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