信噪比(成像)
启发式
GSM演进的增强数据速率
最优化问题
计算机科学
数学优化
半径
功率(物理)
覆盖概率
通信系统
电子工程
算法
工程类
数学
电信
统计
计算机网络
物理
量子力学
置信区间
作者
Sheng‐Hong Lin,Youyun Xu,Lei Wang,Jin‐Yuan Wang
出处
期刊:IEEE Transactions on Intelligent Transportation Systems
[Institute of Electrical and Electronics Engineers]
日期:2021-12-28
卷期号:23 (9): 15107-15120
被引量:6
标识
DOI:10.1109/tits.2021.3137030
摘要
This paper investigates coverage analysis and performance optimization for a high-speed railway (HSR) communication system with carrier aggregation (CA). Initially, the system model is established. By using CA technology, the statistical characteristic of the received signal-to-noise ratio (SNR) is obtained. Then, for the systems with or without CA, unified theoretical expressions for the edge coverage probability (ECP) and the percentage of cell coverage area (CCA) are obtained, respectively. After that, a chance-constrained coverage optimization is proposed to improve the coverage performance, which is effectively solved by using a heuristic algorithm. Numerical results show that the derived expressions of the ECP and the percentage of CCA are accurate and can be directly used to evaluate the coverage performance without time-intensive simulations. Moreover, the impacts of CA, transmit power, cell radius, received SNR threshold, HSR scenario on coverage performance have been discussed. Furthermore, the effectiveness of the proposed coverage optimization scheme is also verified.
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