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第 38 卷 第 4 期 张舒然等: 一种鲁棒性强的 OFDM 水声通信系统 643
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(d) 3500 mܫQPSKឋᆊҒSERᄊᮠ۫Ѭ࣋ڏnjSERᮠ۫Ѭ࣋ڏnjSERኀՂᫎѬ࣋ڏ
图 10 不同距离处信号译码前 SER 分布
Fig. 10 Un-decoded SER results at the different distances
响应的强度相对应,当频点上信道频响强度高时 & Measurement, Sensor Network and Automation, 2012:
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比大于 14 dB 时,译码后 SER 为全部零,说明我们
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的编码方案具有良好的纠错能力。不同距离处的译 ment[C]. Proceedings of the 5th International Conference
码结果如表 1 所示,从表 1 中可以看出,通信距离为 on Information Technology & Multimedia, 2011: 1–6.
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