This work addresses a strategy to mitigate jamming attack on low-latency communication by a Full-Duplex (FD) adversary in fast-fading channel conditions. The threat model is such that the FD adversary can jam a frequency band and measure the jammed band's power level. We first point out that due to the presence of this FD adversary, Frequency Hopping (FH) fails. We then propose a fast-forward cooperative relaying scheme, wherein the victim node hops to the frequency band of a nearby FD helper node that fast-forwards the victim's symbol along with its symbol. At the same time, the victim and the helper cooperatively pour some fraction of their power on the jammed band to engage the adversary. Due to fast-fading channel conditions, the victim and the helper use amplitude based non-coherent signalling referred to as Non-Coherent Fast-Forward Full-Duplex (NC-F2FD) relaying. To minimize the error-rate of this strategy, we jointly design the constellations at the helper node and the victim node by formulating an optimization problem. Using non-trivial results, we first analyse the objective function and then, based on the analytical results, propose a low-complexity algorithm to synthesize the fast-forwarded constellations. Through simulations, we show that the error performance of the victim improves after employing our countermeasure.
翻译:这项工作涉及一个战略, 缓解全多功能敌国( FD) 在快速破损的频道条件下对低延迟通信的干扰性攻击。 威胁模式是, FD敌国可以干扰一个频率波段, 测量卡卡通波段的功率水平。 我们首先指出, 由于 FD敌国的存在, 频震( FH) 失败了。 我们然后提议一个快速前进的合作中继方案, 受害者节点跳到附近的 FD 帮助节点的频率波段, 使受害者符号及其标志快速向前移动。 同时, 受害者和帮凶可以合作地在卡卡住波段上投出他们力量的一小部分, 与敌人接触。 由于快速淡化的频道条件, 受害者和帮凶使用了基于非Cocherent 快速前进全多功能( NC- F2FFDD) 的信号。 为了尽可能降低这一战略的错误率, 我们联合设计了在首个帮助节节节节点上的星座星座, 和帮凶者在卡段上投出部分的力量来与敌国战斗力。 由于快速分析结果,, 使用一个不精确分析结果,,, 使用一个不精确分析结果。