通过ARQ的比特数
Bits through ARQs
摘要：
动态频率复用中的一个基本问题是认知无线电不知道它对主许可证持有者造成的干扰量。针对这种情况提出了一个模型，并进行了分析。主设备通过擦除信道发送数据包，并采用简单的ACK/NAK反馈（ARQ）来重新发送擦除数据包。此外，它的擦除概率的认知无线电的活动的影响。虽然认知无线电不知道这些干扰特性，但它可以窃听主设备的ARQ。该模型导致的策略，其中认知无线电自适应地调整其输入的基础上，主要的ARQ，从而保证主要超过目标数据包速率。一个相对简单的策略，即认知无线电传输只有当主的经验数据包速率超过一个阈值被证明有有趣的普遍属性的意义上说，对于未知的时变干扰特性，主要是保证满足其目标速率。此外，这种策略的一个更复杂的版本被证明是认知无线电的能力实现时，干扰特性是时不变的。
英文摘要：
A fundamental problem in dynamic frequency reuse is that the cognitive radio is ignorant of the amount of interference it inflicts on the primary license holder. A model for such a situation is proposed and analyzed. The primary sends packets across an erasure channel and employs simple ACK/NAK feedback (ARQs) to retransmit erased packets. Furthermore, its erasure probabilities are influenced by the cognitive radio's activity. While the cognitive radio does not know these interference characteristics, it can eavesdrop on the primary's ARQs. The model leads to strategies in which the cognitive radio adaptively adjusts its input based on the primary's ARQs thereby guaranteeing the primary exceeds a target packet rate. A relatively simple strategy whereby the cognitive radio transmits only when the primary's empirical packet rate exceeds a threshold is shown to have interesting universal properties in the sense that for unknown time-varying interference characteristics, the primary is guaranteed to meet its target rate. Furthermore, a more intricate version of this strategy is shown to be capacity-achieving for the cognitive radio when the interference characteristics are time-invariant.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
