Asymmetric diversity modulation scheme in wireless fading relay channels
Asymmetric diversity modulation scheme in wireless fading relay channels
复制标题
无线衰落中继信道中的非对称分集调制方案
DOI：
10.1109/twc.2009.081202
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发表时间：
2009
影响因子：
10.4
通讯作者：
D. Hong
中科院分区：
文献类型：
--
作者：
Jaemin Han;Eunsung Oh;Hyungsik Ju;D. Hong
在本文中，我们提出了一种非对称分集调制（ADM）方案的单源中继系统，利用中继的高传输能力作为一种形式的多样性。为了实现这一点，所提出的方法通过高阶调制中继传输多个源比特，作为提供额外的时间分集的一种方式。然后，空间和时间分集在目的地进行基于“比特”的组合。使用建议的“位”为基础的信道合并方法，我们推导出这样一个系统的理论误码率（BER）。此外，我们调查的事实是，该方案显示出的比特功率和时间分集之间的性能权衡所造成的高阶调制中继降低比特功率。
In this paper, we propose an asymmetric diversity modulation (ADM) scheme for a single-source relay system that utilizes the relay's higher transmission ability as a form of diversity. To achieve this, the proposed method transmits multiple source bits over a high-order modulating relay as a way to provide additional time diversity. The spatial and time diversity then undergo 'bit'-based combining at the destination. Using the proposed 'bit'-based channel combining method, we derive the theoretical bit error rate (BER) for such a system. Moreover, we investigate the fact that the proposed scheme shows a performance trade-off between bit power and time diversity resulting from the reduced bit power caused by a high-order modulating relay.