Research on Anti-interference Performance of MIMO-OFDM System Communication

2018 IEEE International Conference on Electronics and Communication Engineering (ICECE) Pub Date : 2018-12-01 DOI:10.1109/ICECOME.2018.8644909

Zhetao Wang, Xiaoquan Song

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Abstract

In this paper, for the anti-interference problem of communication in the field of electronic countermeasures, the anti-jamming performance of MIMO-OFDM system communication is analyzed. Firstly, the MIMO system is introduced. It is proved through the formula deduction that the MIMO technology improves the channel capacity of the system. Secondly, the working principle of MIMO-OFDM is analyzed, and its system structure and anti-jamming performance are explored. Finally, the channel capacity of different MIMO systems and the anti-jamming performance of MIMO-OFDM system communication are simulated and analyzed. The simulation results show that with the increase of the number of antennas, the channel capacity is obviously increased, which is conducive to the stability of communication. Compared with a single MIMO system or OFDM system, a MIMO-OFDM system has a lower error rate and more excellent anti-interference performance under the same noise interference. Finally, the effect of the LS and LMMSE two channel estimation algorithms on the system performance is simulated. The results show that the LMMSE algorithm has better performance and can effectively improve the system performance.

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MIMO-OFDM系统通信抗干扰性能研究

本文针对电子对抗领域中通信的抗干扰问题，分析了MIMO-OFDM系统通信的抗干扰性能。首先，介绍了MIMO系统。通过公式推导证明了MIMO技术提高了系统的信道容量。其次，分析了MIMO-OFDM的工作原理，探讨了MIMO-OFDM的系统结构和抗干扰性能。最后，对不同MIMO系统的信道容量和MIMO- ofdm系统通信的抗干扰性能进行了仿真分析。仿真结果表明，随着天线数量的增加，信道容量明显增加，有利于通信的稳定性。与单一MIMO系统或OFDM系统相比，在相同的噪声干扰下，MIMO-OFDM系统具有更低的误码率和更优异的抗干扰性能。最后，仿真了LS和LMMSE两种信道估计算法对系统性能的影响。结果表明，LMMSE算法具有更好的性能，可以有效地提高系统性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2018 IEEE International Conference on Electronics and Communication Engineering (ICECE)

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