OFDM-IM Based Dual-Hop System Using Fixed-Gain Amplify-and-Forward Relay With Pre-Processing Capability
OFDM-IM Based Dual-Hop System Using Fixed-Gain Amplify-and-Forward Relay With Pre-Processing Capability
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基于 OFDM-IM 的双跳系统，使用具有预处理功能的固定增益放大和转发中继
DOI：
10.1109/twc.2019.2902139
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发表时间：
2019-03
影响因子：
10.4
通讯作者：
Zhaojian Zhang
中科院分区：
文献类型：
--
作者：
Shuping Dang;Jun Li;Miaowen Wen;Shahid Mumtaz;Zhaojian Zhang
与传统的OFDM相比，具有上级频谱效率和可靠性的正交频分复用（OFDM-IM）技术近年来受到了广泛的关注。协作解码转发中继技术已经与OFDM IM技术结合起来，提供了更高的能量效率和更好的网络覆盖。然而，由于复杂的解码和信道估计过程带来的高系统复杂度和传输延迟，它在实际应用中可能不可行。因此，在本文中，我们提出了一种固定增益（FG）放大转发（AF）中继辅助的OFDM-IM系统，该系统不需要在中继处执行复杂的解码和信道估计，而只需要中继处的预处理能力，例如，循环前缀移除和重新插入。因此，可以降低系统复杂度，并且由中继处的处理引起的转发延迟以及功耗也下降。我们分析了该系统的平均中断概率，误块率和可达率，并通过数值结果验证了所有分析。所提出的FG AF中继辅助的OFDM-顶提供了在新网络范例中实现OFDM-顶的简单解决方案，其中节点是简单的、功率受限的和/或复杂度受限的。
Orthogonal frequency-division multiplexing with index modulation (OFDM-IM) has recently attracted many researchers’ attention due to its superior spectrum efficiency and reliability compared to the traditional OFDM. Cooperative decode-and-forward relaying has been incorporated with OFDM-IM, which provides a higher energy efficiency and better network coverage. However, it might not be feasible in realistic applications, owing to the high system complexity and transmission delay rendered by complex decoding and channel estimation procedures. Therefore, in this paper, we propose a fixed-gain (FG) amplify-and-forward (AF) relay-assisted OFDM-IM system, which does not need to perform complex decoding and channel estimation at the relay, but only requires a pre-processing capability at the relay, e.g., cyclic prefix removal and re-insertion. Therefore, the system complexity can be reduced and the forwarding delay as well as power consumption caused by processing at the relay also decline. We analyze the average outage probability, block error rate, and achievable rate of the proposed system and verify all analysis by numerical results. The proposed FG AF relay-assisted OFDM-IM provides a simple solution to the implementation of OFDM-IM in new network paradigms, where nodes are simple, power limited, and/or complexity limited.
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影响因子：
10.4
作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
3.9
作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
A. Chandra;C. Bose;Manas Kr. Bose
DOI：
10.1109/lcomm.2016.2560171
发表时间：
2016-04
期刊：
IEEE Communications Letters
影响因子：
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作者：
Q. Ma;Yue Xiao;L. Dan;Ping Yang;Lan Peng;Shaoqian Li
通讯作者：
Q. Ma;Yue Xiao;L. Dan;Ping Yang;Lan Peng;Shaoqian Li