摘要
部分频带噪声干扰(PBNJ)是一种主要的窄带干扰,它对通信系统性能的影响十分突出。该文针对FH/MFSK系统中,传统的部分频带干扰模型的干扰带宽最小分辨率是一个跳频子带带宽(即MFSK信号的带宽),研究了更具有实际价值的新的部分频带干扰模型,即将干扰带宽最小分辨率精确到MFSK信号带宽的1/M。该文推导了莱斯衰落信道下的误比特率(BER)公式,给出了其闭合表达式,并通过计算机仿真验证了理论推导的正确性。理论分析与仿真结果表明,M,Nh,ρ越小,传统与新PBNJ模型下FH/MFSK信号的BER性能差异就越大。
Partial-Band Noise Jamming （PBNJ） is one main type of narrow-band jamming, it has a huge impact on the performance of communication systems. The minimum resolution of jamming bandwidth of the conventional PBNJ model is the Frequency-Hopping （FH） sub-band bandwidth （Multiple Frequency Shift Keying （MFSK） signal bandwidth） in the FH/MFSK system. However, it is not always reasonable, thus a new PBNJ model, whose minimum resolution of jamming bandwidth can accurate to 1/M of the MFSK signal bandwidth is studied. In this paper, the closed-form expressions of Bit Error Rate （BER） performance under the new PBNJ model over Rician fading channel are derived and validated by computer simulations. The theoretical and simulation results show that the BER performance difference between the new and conventional PBNJ models is larger for smallerM,Nh,ρ.
出处
《电子与信息学报》
EI
CSCD
北大核心
2015年第3期721-726,共6页
Journal of Electronics & Information Technology
基金
国家自然科学基金(61201126)
新世纪优秀人才支持计划(NCET-11-0058)
国家部委基金
四川省青年科技基金(2012JQ0020)资助课题
关键词
跳频通信
部分频带噪声干扰
最小干扰带宽分辨率
莱斯衰落信道
Frequency Hopping （FH） communication
Partial-Band Noise Jamming （PBNJ）
Minimum resolution of jamming bandwidth
Rician fading channel
