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首页> 外文期刊>Wireless Communications Letters, IEEE >Adaptive Power Allocation for HARQ with Chase Combining in Correlated Rayleigh Fading Channels
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Adaptive Power Allocation for HARQ with Chase Combining in Correlated Rayleigh Fading Channels

机译:相关瑞利衰落信道中具有追赶的HARQ自适应功率分配

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摘要

We consider the problem of minimizing the packet drop probability (PDP) under an average transmit power constraint for Chase combining (CC)-based hybrid-automatic repeat request (HARQ) schemes in correlated Rayleigh fading channels. We propose a method to find a solution to the non-convex optimization problem using an exact expression of the outage probability. However, the complexity of this method is high. Therefore, we propose an alternative approach in which we use an asymptotically equivalent expression for the outage probability and reformulate it as a geometric programming problem (GPP), which can be efficiently solved using convex optimization algorithms.
机译:我们考虑在相关瑞利衰落信道中基于追赶合并(CC)的混合自动重发请求(HARQ)方案的平均发射功率约束下使丢包概率(PDP)最小化的问题。我们提出一种使用中断概率的精确表达式来找到非凸优化问题的解决方案的方法。但是,该方法的复杂度很高。因此,我们提出了一种替代方法,其中对停机概率使用渐近等效表达式,并将其重新构造为几何规划问题(GPP),可以使用凸优化算法有效地对其进行求解。

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