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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Reduced-complexity detectors for Multi-h CPM in aeronautical telemetry
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Reduced-complexity detectors for Multi-h CPM in aeronautical telemetry

机译：航空遥测中用于多h CPM的降低复杂度的探测器

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摘要

A two-index, partial response continuous-phase modulation (CPM) known as ARTM CPM was adopted for use in aeronautical telemetry in the IRIG 106 standard in 2004. This waveform was selected because it achieves approximately three times the spectral efficiency of PCM/FM, the legacy modulation in IRIG-106. However, the optimum receiver requires 128 real-valued matched filters and keeps track of the waveform state with a trellis of 512 states and 2048 branches. Various complexity-reducing techniques are applied and the resulting loss in detection efficiency is quantified. It is shown that the full 512-state trellis is not required to achieve desirable detection efficiency: two different 32-state configurations were found to perform within 0.05 dB of optimal; two different 16-state configurations were found to perform within 0.80 dB of optimal; and an 8-state configuration was found to perform within 1.05 dB of optimal. The analysis and simulation results show that to achieve a given state complexity, proper combination of two or more complexity-reducing techniques generally outperforms the use of a single complexity-reducing technique
机译：2004年，IRIG 106标准在航空遥测中采用了被称为ARTM CPM的两指标部分响应连续相位调制（CPM）。之所以选择此波形，是因为该波形达到了PCM / FM频谱效率的大约三倍。 ，是IRIG-106中的传统调制方式。但是，最佳接收器需要128个实值匹配滤波器，并以512个状态和2048个分支的网格跟踪波形状态。应用了各种降低复杂性的技术，并量化了检测效率的损失。结果表明，不需要完整的512状态网格来实现理想的检测效率：发现两种不同的32状态配置可以在0.05 dB的最佳范围内执行；发现两种不同的16状态配置在0.80 dB的最佳范围内工作；并发现8态配置在1.05 dB的最佳范围内工作。分析和仿真结果表明，要实现给定的状态复杂度，两种或更多种降低复杂度的技术的正确组合通常会优于单一降低复杂度的技术的使用

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