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本文首先研究了在双平稳时变信道中传递二元消息的潜在抗干扰性。接着介绍了根据观察接收符号序列的序列检测技术,并导出了相应差错概率的上、下确界。发现在高信噪比时其上下确界是相当紧密的,特别是其下确界正是潜在抗干扰性,而其上确界比潜在抗干扰性仅稍有恶化,而且我们发现在利用序列检测技术后,符号间的干扰不再是一件坏事,符号间干扰越严重,其抗衰落性能越好。
This paper first studies the potential anti-jamming of transmitting binary messages in bistable time-varying channels. Then we introduce the sequence detection technique based on the observation of received symbol sequences and derive the upper and lower bounds of the corresponding error probabilities. It is found that the upper and lower bounds are quite close at high signal-to-noise ratio, especially the lower bound is the potential anti-jamming, while the upper bound is only slightly worse than the potential anti-jamming, and we find that in the use of the sequence Detection technology, the interference between symbols is no longer a bad thing, the more serious inter-symbol interference, the better anti-fading performance.