Network Synchronization for Two-Way Multi-Hop Relay Networks with Block Modulation
Network Synchronization for Two-Way Multi-Hop Relay Networks with Block Modulation
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DOI：
10.1109/vetecs.2010.5493686
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发表时间：
2010-05
期刊：
影响因子：
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通讯作者：
Keiichi Mizutani;K. Sakaguchi;K. Araki
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文献类型：
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作者：
Keiichi Mizutani;K. Sakaguchi;K. Araki
针对基于TDD/TDMA分组调制的双向多跳中继网络，提出了一种新的时效性网络同步方案。其中一种方案是基于广播（BC）定时同步。由于该方案会在每个接收端产生网络同步误差，因此引入了额外的保护间隔（GI）来补偿误差。第二种方案是基于BC和多址（MA）定时同步。不需要额外的GI，并且时间效率得到了提高，因为每个节点的发送和接收定时被调整以消除网络同步错误。第二种方案在每帧符号数为100时，在任意节点排列、带宽和跳数的情况下，时间效率达到98.8%以上。
This paper proposes novel time-efficient network synchronization schemes for TDD/TDMA based two-way multi-hop relay networks with block modulation. One of the proposed schemes is based on broadcast (BC) timing synchronization. Since this scheme causes network synchronization errors at each receiver, additional guard interval (GI) to compensate the error is introduced. The second proposed scheme is based on both of BC and multiple access (MA) timing synchronization. The additional GI is not required and the time-efficiency is improved because the transmit and receive timing at each node are adjusted to eliminate the network synchronization errors. The second proposed scheme achieves over 98.8% time-efficiency with arbitrary node arrangement, bandwidth, and number of hops when the number of symbols per frame is hundred.