Toward Robust Concurrent Transmission for sub-GHz Non-DSSS Communication: Poster Abstract
Toward Robust Concurrent Transmission for sub-GHz Non-DSSS Communication: Poster Abstract
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DOI：
10.1145/2994551.2996703
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发表时间：
2016-11
期刊：
影响因子：
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通讯作者：
Chun-Hao Liao;Makoto Suzuki;H. Morikawa
中科院分区：
文献类型：
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作者：
Chun-Hao Liao;Makoto Suzuki;H. Morikawa
许多研究表明，并发传输（CT）有助于提高2.4GHz IEEE-802.15.4多跳网络的能量效率和延迟。然而，已经表明，IEEE 802.15.4中的CT的成功主要是由于DSSS。鉴于未来智能电表应用的远距离sub-GHz技术的巨大潜力，我们评估了将CT应用于非DSSS sub-GHz接收机的可行性。在这项工作中，我们评估的FSK为基础的接收机的性能在关键的情况下-的情况下，并发发送的信号接收到相同的功率，这样的相互干扰变得最差。我们的评估是基于TI CC1120芯片的2-FSK模式。结果表明，基本的2-FSK模式容易受到CT的影响。如果采用前向纠错和交织器，只要定时偏差小于1 μ s，CFO大于5KHz，接收机就能在强干扰区生存。
Many researches have shown that concurrent transmission (CT) helps to improve the energy efficiency and latency of 2.4GHz IEEE-802.15.4-based multi-hop networks. However, it has been shown that the success of CT in IEEE 802.15.4 is mainly due to the DSSS. In view of the great potential of long range sub-GHz technologies for future smart meter applications, we assess the feasibility of applying CT to non-DSSS sub-GHz receivers. In this work, we evaluate the FSK-based receiver performance in the critical case - the scenario that concurrent transmitted signals are received with the same power such so the mutual interference become worst. Our evaluations are based on the 2-FSK mode of TI CC1120 chips. The results show that the basic 2-FSK mode is vulnerable to CT. On the other hand, if the FEC and the interleaver are adopted, the receiver can survive in the heavy interfering region as long as the timing offset is smaller than 1 μs and the CFO is larger than 5 KHz.