Maximizing Achievable Rate Strategies for Incremental-Relay Multicarrier Transmission
Maximizing Achievable Rate Strategies for Incremental-Relay Multicarrier Transmission
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DOI：
10.1109/tvt.2015.2453213
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发表时间：
2016-07
影响因子：
6.8
通讯作者：
Yang Zhang;Lihua Pang;Feng-kui Gong;Guangliang Ren;Xiao Liang;Bin Li;Jianwu Dou;Jiandong Li
中科院分区：
文献类型：
--
作者：
Yang Zhang;Lihua Pang;Feng-kui Gong;Guangliang Ren;Xiao Liang;Bin Li;Jianwu Dou;Jiandong Li
该文提出了一种改进的放大转发（AF）正交频分复用（OFDM）方案，该方案充分利用增量策略提高协作传输的频谱效率，并提出了几种可行的速率最大化资源分配策略。优化的高计算复杂性使我们有必要调查次优的方法。然而，由于穷举搜索的性质，相关的计算负担仍然是密集的。因此，低复杂度的替代方案的发展，以实现更好的性能和复杂性之间的权衡。此外，它的平均无条件信噪比（SNR）中断概率的解析推导。数值结果表明，该建议的好处，并验证了理论分析的有效性。
This paper develops an improved amplify-and-forward (AF) orthogonal frequency-division multiplexing (OFDM) scheme, where an incremental policy is fully utilized to promote the spectrum efficiency of cooperative transmission, and presents several achievable-rate-maximizing resource allocation strategies. The high computational complexity for optimization necessitates our investigation of suboptimal approaches. However, the associated computational burdens are still intensive due to the exhaustive search nature. As a consequence, a low-complexity alternative evolves to achieve a better tradeoff between performance and complexity. Moreover, its average unconditional signal-to-noise ratio (SNR) outage probability is analytically derived. Numerical results are shown to illustrate the benefits of the proposals and verify the validity of the theoretical analysis.