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1.重庆邮电大学通信与信息工程学院,重庆 400065
2.重庆邮电大学超视距可信信息传输研究所,重庆 400065
[ "李国军(1978- ),男,四川资阳人,博士,重庆邮电大学教授,主要研究方向为复杂恶劣环境超视距无线通信与网络。" ]
[ "郑翔(2000- ),男,四川内江人,重庆邮电大学硕士生,主要研究方向为信号检测。" ]
[ "王杰(1994- ),男,重庆人,重庆邮电大学博士生,主要研究方向为超视距无线通信与网络。" ]
收稿日期:2024-09-02,
修回日期:2025-01-04,
纸质出版日期:2025-01-25
移动端阅览
李国军,郑翔,王杰.高速移动环境下OTSM B-LMMSE-PIC迭代检测方法[J].通信学报,2025,46(01):13-22.
LI Guojun,ZHENG Xiang,WANG Jie.B-LMMSE-PIC iterative detection method for OTSM in high-speed mobile environment[J].Journal on Communications,2025,46(01):13-22.
李国军,郑翔,王杰.高速移动环境下OTSM B-LMMSE-PIC迭代检测方法[J].通信学报,2025,46(01):13-22. DOI: 10.11959/j.issn.1000-436x.2025010.
LI Guojun,ZHENG Xiang,WANG Jie.B-LMMSE-PIC iterative detection method for OTSM in high-speed mobile environment[J].Journal on Communications,2025,46(01):13-22. DOI: 10.11959/j.issn.1000-436x.2025010.
为提升正交时序复用(OTSM)在高速移动环境下传输的可靠性,提出了一种基于并行干扰消除的分块线性最小均方误差(B-LMMSE-PIC)迭代检测方法。该方法在时域分块进行MMSE-PIC符号估计,并且使用诺伊曼(Neumann)级数逼近涉及的矩阵反演,将计算复杂度降为线性阶;随后在时延-序列域计算估计符号的均值与方差作为下一次迭代的先验信息。仿真结果表明,在移动速度为540 km/h的场景下使用16QAM调制且误码率为10
-4
时,所提方法与目前广泛使用的基于最大比合并(MRC)的迭代rake检测方法相比有2.48 dB的性能增益。
To improve the reliability of orthogonal time sequency multiplexing (OTSM) transmission in high-speed mobile environments
a block linear minimum mean square error with parallel interference cancellation (B-LMMSE-PIC) iterative detection method was proposed. The MMSE-PIC symbol estimation was performed in the time domain by block
and the Neumann series approximation was used for matrix inversion
which reduced the computational complexity to linear order. Subsequently
the mean and variance of the estimated symbols in the delay-sequency domain were calculated to provide prior information for the next iteration. Simulation results demonstrated that
under conditions of 540 km/h mobile speed and 16QAM modulation with a BER of 10
-4
the proposed method achieves a performance ga
in of 2.48 dB compared to the widely used iterative rake detection algorithm based on maximum ratio combining (MRC).
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