| 王志,陈向民.5G-A正交失配干扰测试平台研究与实现[J].电子测量与仪器学报,2026,40(4):299-306 |
| 5G-A正交失配干扰测试平台研究与实现 |
| Research and implementation of an orthogonality-sabotaginginterference testing platform for 5G-A |
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| DOI： |
| 中文关键词: 干扰测试平台 正交失配干扰 抗干扰性能 测试验证 5G-A |
| 英文关键词:interference testing platform orthogonality-sabotaging interference interference resistance evaluation measurement verification 5G-A |
| 基金项目:5G-A通感融合技术测试仪表和综合测试验证系统研发（移动信息网络国家科技重大专项2025ZD1301700）资助项目 |
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| 中文摘要: |
| 为系统评估第五代增强型移动通信（5G-Advanced）系统在复杂电磁环境下的抗干扰性能，本文针对现有干扰测试方法在模拟真实非正交干扰上的不足，设计并实现了一种基于正交失配干扰机制的5G-A专用测试平台。该平台创新性地提出通过引入归一化频率偏移以破坏子载波正交性的干扰生成方法，建立攻击信号频偏同干扰能量扩散效率的解析关系。硬件上采用FPGA结合高速ADC/DAC模块与可配置射频前端，实现了干扰信号的频率，功率，波形以及时序精准产生与高精度控制。为全面验证平台有效性及评估5G-A关键信道的抗干扰能力，射频馈线直连与静态/动态空口实测两种场景，并重点分析考察了同步信号块（SSB），物理下行控制信道（PDCCH）与物理上行控制信道（PUCCH）在不同强度正交失配干扰下的性能表现。实验结果表明，相较于传统窄带干扰，正交失配干扰在相同发射功率下可使终端误码率提升2倍，同时能够准确地测试上述关键信号及信道的抗干扰性能，对推动5G-A的可靠部署具有积极意义。 |
| 英文摘要: |
| For the systematic evaluation of the anti-jamming performance of 5th generation advanced (5G-A) systems in complex electromagnetic environments, this study addresses the shortcomings of existing jamming test methods in simulating realistic non-orthogonal interference. A dedicated 5G-A test platform based on an orthogonal mismatch interference mechanism is designed and implemented. The platform innovatively proposes an interference generation method that destroys subcarrier orthogonality by introducing a normalized frequency offset, establishing an analytical relationship between the attacker’s frequency offset and the efficiency of interference energy diffusion. In terms of hardware implementation, the platform employs an FPGA combined with high-speed ADC/DAC modules and a configurable RF front-end, achieving precise generation and high-precision control of interference signals in terms of frequency, power, waveform, and timing. To comprehensively verify the platform’s effectiveness and evaluate the anti-jamming capability of key 5G-A channels, two test scenarios—RF cable direct connection and static/dynamic over-the-air measurement—were employed. The performance of the synchronization signal block (SSB), physical downlink control channel (PDCCH), and physical uplink control channel (PUCCH) under orthogonal mismatch interference of varying intensities was analyzed and examined. Experimental results indicate that, compared to traditional narrowband jamming, orthogonal mismatch interference can increase the terminal bit error rate by a factor of two under the same transmit power, while enabling accurate testing of the anti jamming performance of the aforementioned key signals and channels. This work holds positive significance for promoting the reliable deployment of 5G-A networks. |
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