Multi-RIS-Doppler-Mitigation-Hardware-Impairments
所属分类：其他
开发工具：matlab
文件大小：51KB
下载次数：1
上传日期：2023-01-15 04:49:14
上 传 者：
sh-1993
说明： 基于PI的多RIS高速通信的仿真代码：多普勒抑制和硬件损伤...
(Simulation code for “PI-Based High-Speed Communications with Multiple RISs: Doppler Mitigation and Hardware Impairments,” by K. Wang, CT. Lam, and BK. Ng, Applied Sciences, 12, no.14: 7076, 2022.)
文件列表:
Figure_3.m (7830, 2023-01-15)
GPL_v2.0.txt (18431, 2023-01-15)
function_A0.m (1099, 2023-01-15)
function_Amn.m (2912, 2023-01-15)
function_Astar.m (576, 2023-01-15)
function_Q.m (497, 2023-01-15)
function_S0.m (682, 2023-01-15)
function_Smn.m (3098, 2023-01-15)
function_antenna_gain_TR.m (933, 2023-01-15)
function_cartprod.m (1544, 2023-01-15)
function_centers_multi_IRS.m (646, 2023-01-15)
function_centers_single_IRS.m (1377, 2023-01-15)
function_check_dim.m (1255, 2023-01-15)
function_compute_SE.m (752, 2023-01-15)
function_gain_IRS.m (524, 2023-01-15)
function_interval.m (849, 2023-01-15)
function_time_delay.m (1619, 2023-01-15)
function_vehicle_moving_xdir.m (824, 2023-01-15)
plot_result.png (28474, 2023-01-15)
### Disclaimer
The simulation code is licensed under the GPLv2 license and is delivered as it is. The authors encourage you to reuse the code in your research, but we cannot give any support. The readme file contains the instructions on how to run the code. As soon as you edit the code, you are on your own. My GitHub page is the only way that we are sharing simulation code, so there is no need to send us emails and ask for code related to other papers. The code is either openly available for everyone or it is not available at all.
### This code package is licensed under the GPLv2 license. If you in any way use this code for research that results in publications, please cite the original article listed above.
```
@article{wang2022rispi,
title={Positioning Information Based High-Speed Communications with Multiple RISs: Doppler Mitigation and Hardware Impairments},
author={Wang, Ke and Lam, Chan-Tong and Ng, Benjamin K},
journal={Applied Sciences},
volume={12},
number={14},
pages={7076},
year={2022}
}
```
# Multi-RIS-Doppler-Mitigation-Hardware-Impairments
This is a code package is related to the follow scientific article:
## K. Wang, C. -T. Lam and B. K. Ng, "[Positioning Information Based High-Speed Communications with Multiple RISs: Doppler Mitigation and Hardware Impairments](https://www.mdpi.com/2076-3417/12/14/7076/htm)," in _Applied Sciences_, 12, no.14: 7076, 2022.
### Abstract
In this paper, we consider a multiple reconfigurable intelligent surface (RIS)-assisted system using positioning information (PI) to explore the potential of Doppler effect mitigation and spectral efficiency (SE) enhancement in high-speed communications (HSC) in the presence of hardware impairments (HWI). In particular, we first present a general multi-RIS-assisted system model for HSC with HWI. Then, based on PI, different phase shift optimization strategies are designed and compared for maximizing SE, eliminating Doppler spread, and maintaining a very low delay spread. Moreover, we compare the performance of different numbers of RISs with HWI in terms of SE and delay spread. Finally, we extend our channel model from line-of-sight to the Rician channel to demonstrate the effectiveness and robustness of our proposed scheme. Numerical results reveal that the HWI of RISs increases the delay spread, but has no impact on Doppler shift and spread. Additionally, the multiple RIS system not only suffers a more severe delay spread, but is limited in SE due to the HWI. When the number of RISs increases from 2 to 16, the range of average spectral efficiency and delay spread are from 4 to 4.6 Bit/s/Hz and from 0.7 μs to 2.5 μs, respectively. In contrast to conventional RIS-assisted systems that require channel estimation, the proposed PI-based RIS system offers simplicity without compromising effectiveness and robustness in both SE enhancement and Doppler mitigation.
### Result
### How to use this code?
Please run "Figure_3.m" to obtain the Figure 3 of the paper. By modifying the parameters, other figures can be obtained easily.
### Related papers
You can also obtain the numerical results of the papers below (i.e., [1] and [2]) using this repository. We encourage you to cite them.
[1] K. Wang, C. -T. Lam and B. K. Ng. "[Doppler Effect Mitigation using Reconfigurable Intelligent Surfaces with Hardware Impairments](https://ieeexplore.ieee.org/abstract/document/9681939)". In 2021 IEEE Globecom Workshops (GC Wkshps), pages 1–6, Dec. 2021.
[2] K. Wang, C. -T. Lam and B. K. Ng. "[IRS-aided Predictable High-Mobility Vehicular Communication with Doppler Effect Mitigation](https://ieeexplore.ieee.org/abstract/document/9448955)". In 2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring), pages 1–6, Apr. 2021.
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