In this paper, we propose and analyze a scheme for wireless channels, which is a combination of a hybrid type I Automatic Repeat reQuest (ARQ) scheme and a power ramping. In hybrid type I ARQ scheme, the same redundancy bits for error correction is transmitted repeatedly when a negative acknowledgment (NAK) is obtained. In addition to the ARQ scheme, the power ramping is considered for more reliable downlink data transmission, in which the transmission power is gradually changed from a small level to large levels when the number of retransmission increases. This is done without any knowledge of the channels at the transmitter. Simulation results show that by applying the combined hybrid ARQ and power ramping scheme with properly selected parameters, it has throughput advantage of 3～5%.
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机译：在本文中，我们提出并分析了无线信道的方案，其是混合型I自动重复请求（ARQ）方案和功率斜坡的组合。在混合型I ARQ方案中，当获得否定确认（NAK）时，重复发送用于纠错的相同冗余比特。除了ARQ方案之外，电力斜坡被认为是用于更可靠的下行链路数据传输，其中当重传的次数增加时，传输功率从小级别逐渐变为大的级别。这是在没有发射机处的通道知识的情况下完成的。 Simulation results show that by applying the combined hybrid ARQ and power ramping scheme with properly selected parameters, it has throughput advantage of 3～5%.
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