CAJ | 학술논문

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。
부분빈대조성간우(PBNJ)시일충주요적착대간우，타대통신계통성능적영향십분돌출。해문침대 FH/ MFSK계통중，전통적부분빈대간우모형적간우대관최소분변솔시일개도빈자대대관(즉MFSK신호적대관)，연구료경구유실제개치적신적부분빈대간우모형，즉장간우대관최소분변솔정학도MFSK신호대관적1/M。해문추도료래사쇠락신도하적오비특솔(BER)공식，급출료기폐합표체식，병통과계산궤방진험증료이론추도적정학성。이론분석여방진결과표명，M, Nh, ρ월소，전통여신PBNJ모형하FH/MFSK신호적BER성능차이취월대。
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.