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Study on the General Design Scheme of UNB Modulation Formats

机译：UNB调制格式总体设计方案研究

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摘要

As an innovative communication scheme, ultra narrow band modulation is attracting more and more attention. In order to uncover the essence of the technology, asymmetric binary x shift keying, the general design scheme of UNB, is proposed and studied in this paper as a different modulation scheme from the traditional methods. The general wave function is defined first, and the modulation process is presented, then particular realization of asymmetric BASK, asymmetric BPSK, and asymmetric BFSK were studied. This verified the general characteristics of asymmetric binary x shift keying proposed above as the general modulation format design of UNB technology from the view of modulation essence. On this basis, time domain and frequency characteristics are given by derivation of wave function and PSD equation, and different particular time domain waveforms and PSD are plotted and examined. Next, a general modulation realization is presented, and the modulation and demodulation process are related, which break through the traditional filtering methods. Filter can then be replaced by other signal shaping methods. Finally, demodulation performance formulas of asymmetric binary x shift keying-based ultra narrow band modulation are derived and compared, which can be a base and guide for further modulation study or a trade off for an optimized design of UNB modulation formats.
机译：作为一种创新的通信方案，超窄带调制越来越受到关注。为了揭示该技术的本质，本文提出并研究了非对称二进制x移位键控（UNB的通用设计方案），作为与传统方法不同的调制方案。首先定义了一般的波函数，并给出了调制过程，然后研究了不对称BASK，不对称BPSK和不对称BFSK的具体实现。这从调制本质的角度验证了上面提出的作为UNB技术的通用调制格式设计的非对称二进制x移位键控的一般特性。在此基础上，通过推导波动函数和PSD方程给出了时域和频率特性，并绘制和检验了不同的特定时域波形和PSD。接下来，提出了一种通用的调制实现方法，并涉及到调制和解调过程，突破了传统的滤波方法。然后可以用其他信号整形方法代替滤波器。最后，推导并比较了基于非对称二进制x移位键控的超窄带调制的解调性能公式，可以作为进一步研究调制的基础和指南，也可以为UNB调制格式的优化设计权衡取舍。

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