MIMO空间通信格约简TH预编码分析与改进

姜斌; 包建荣; 唐向宏; 曾嵘

doi:10.11728/cjss2015.04.519

MIMO空间通信格约简TH预编码分析与改进

doi: 10.11728/cjss2015.04.519 cstr: 32142.14.cjss2015.04.519

1.
杭州电子科技大学通信工程学院杭州 310018
2.
东南大学移动通信国家重点实验室南京 210096

基金项目: 国家自然科学基金项目(61001133, 61471152), 浙江省自然科学基金项目(LZ14F010003, LY12F01006), 东南大学移动通信国家重点实验室开放研究基金项目(2014D02), 中国博士后科学基金项目(2014M561555) 和浙江省数据存储传输及应用技术研究重点实验室(杭州电子科技大学)项目(2012E10020)共同资助

详细信息

中图分类号: V443;TN919.3
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出版历程
- 收稿日期: 2014-09-28
- 修回日期: 2015-03-08
- 刊出日期: 2015-07-15

Analysis and Improvement of Lattice Reduction Based TH Precoding in MIMO Space Communications

1.
School of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018
2.
National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096

摘要

摘要: 为了评价现有MIMO空间通信预编码方案并改进, 分析与仿真了基于迫零和最小均方误差准则的联合LLL格约简非线性TH预编码算法. 在TH预编码基础上, 通过改善信道矩阵奇异性, 提出了改进的格约简TH预编码方法. 仿真表明, 采用最小均方准则的预编码MIMO系统性能优于采用迫零准则的系统; 所提格约简TH预编码算法相对现有的TH编码算法, 在采用LLL格约简而使复杂度下降时, 仍可获得相对较好的误码性能, 适合多天线MIMO空间传输预编码等应用.
- 空间通信 /
- MIMO /
- 格约简 /
- TH预编码
Abstract: In order to evaluate and improve present precoding scheme in MIMO space communications, Zero-Force (ZF) and Minimum Mean Square Error (MMSE) criterion based joint Lenstra, Lenstra, Lovász (LLL) Lattice Reduction (LR) nonlinear Tomlinson-Harashima (TH) precoding algorithm is simulated and analyzed. At the same time, according to the basis of TH precoding, an improved lattice reduction based TH precoding is proposed by improving the singularity of the channel matrix. Simulation results indicate that the performance of MIMO precoding with MMSE criterion is better than that with ZF criterion. In addition, the proposed LLL lattice reduction based TH precoding has still obtained much better performance gain than traditional ones while a little more complexity is reduced by the LLL LR method. Therefore, it can be used in the precoding applications and so on in the multiple antenna MIMO space transmission.
- Space communications /
- MIMO /
- Lattice reduction /
- TH precoding

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参考文献(8)

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