Distributed Amplify-and-Forward Cooperation Through Message Partitioning
Distributed Amplify-and-Forward Cooperation Through Message Partitioning
复制标题
通过消息分区进行分布式放大转发合作
DOI：
10.1109/tvt.2011.2162756
复制
发表时间：
2011-07
影响因子：
6.8
通讯作者：
Wassell, Ian
中科院分区：
文献类型：
--
作者：
Li Chen;Carrasco, Rol;o;Wassell, Ian
提出了一种基于消息划分的分布式放大转发协作方案。在该方案中，用户发送的消息被划分为几个相等的部分，每个部分将由不同的用户中继。它使协作用户能够分担分布式网络中的中继负担。其结果是，每个合作用户部署其传输的一半用于广播，另一半用于中继，保持其广播传输的程度和频谱效率。由于合作不需要解码和编码过程中的中继，系统的复杂度的MPWS计划是小于空时编码（STC）的分布式合作计划，但需要一些额外的努力，以实现信号定时同步。信息理论分析表明，该方案可以实现相同的分集复用折衷（DMT）的STC方案的性能约束，实现额外的分集增益，而不影响其复用增益。它上级现有的基于重复的分布式协作方案。该计划的中断性能证实了这一说法，表明可以实现一个显着的分集增益。分析了在实际的编码系统中使用时，MPWS方案的影响，结果表明，可以实现中继数量级的分集增益。我们提出了一个MPPON计划采用频谱效率的比特交织编码调制的仿真结果，并表明，一个显着的分集增益也可以实现在一个实际的编码系统。
This paper proposes a message partitioning-based distributed amplify-and-forward (MPDAF) cooperative scheme. In this scheme, the message transmitted by a user is partitioned into several equal parts, each of which will be relayed by a different user. It enables the cooperative users to share the relaying burden in a distributed network. As a result, each cooperative user deploys half of its transmission for broadcasting and the other half for relaying, maintaining both the degree of its broadcasting transmission and the spectral efficiency. Since cooperation does not require decoding and encoding processes at the relays, the system complexity of the MPDAF scheme is less than that of the space-time-coded (STC) distributed cooperative scheme, but some additional effort is required to achieve signal timing synchronization. Information theoretic analysis of the proposed scheme shows that it can achieve the same diversity-multiplexing tradeoff (DMT) performance bound as the STC scheme, achieving extra diversity gain without affecting its multiplexing gain. It is superior to the existing repetition-based distributed cooperative scheme. The scheme's outage performance substantiates this claim by showing that a significant diversity gain can be achieved. The impact of the MPDAF scheme when used in a practical coded system is analyzed, and it is shown that a diversity gain on the order of the number of relays can be achieved. We present simulation results for an MPDAF scheme employing the spectrally efficient bit-interleaved coded modulation and show that a significant diversity gain can be also achieved in a practical coded system.
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DOI：
10.1109/ccnc.2010.5421691
发表时间：
2010-01
期刊：
2010 7th IEEE Consumer Communications and Networking Conference
影响因子：
--
作者：
Li Chen;R. Carrasco;I. Wassell
通讯作者：
Li Chen;R. Carrasco;I. Wassell
DOI：
10.1109/26.141453
发表时间：
1992-05
期刊：
IEEE Trans. Commun.
影响因子：
--
作者：
E. Zehavi
通讯作者：
E. Zehavi
DOI：
10.1109/icc.1997.595031
发表时间：
2008-11
期刊：
Proceedings of ICC'97 - International Conference on Communications
影响因子：
--
作者：
Giuseppe Caire;G. Taricco;E. Biglieri
通讯作者：
Giuseppe Caire;G. Taricco;E. Biglieri
DOI：
10.1561/0100000019
发表时间：
2008
期刊：
Found. Trends Commun. Inf. Theory
影响因子：
--
作者：
G. Caire;G. Taricco;E. Biglieri
通讯作者：
G. Caire;G. Taricco;E. Biglieri
位交错编码调制
DOI：
10.1002/0471219282.eot369
发表时间：
2003
期刊：
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)
影响因子：
--
作者：
D. Goeckel
通讯作者：
D. Goeckel