脉冲驱动GMSK信号的相干Viterbi和阈值解调器

MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341) Pub Date : 1999-10-31 DOI:10.1109/MILCOM.1999.822690

K. Tsai, G. Lui

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引用次数: 3

摘要

引入脉冲驱动高斯最小移位键控(PDGMSK)，在传统的高斯最小移位键控波形中实现了带宽效率和接收机复杂度之间的平衡。当数据速率降低时，波形被故意设计为收敛到SDPSK或DPSK，而不会扩展绝对带宽。本文研究了PDGMSK波形的最优相干解调，给出了单载波和多载波设置下的近最优Viterbi解调和低复杂度阈值解调的仿真结果。在信噪比(SNR)、相邻信道干扰(ACI)水平和载波频率间隔之间进行了权衡。

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Coherent Viterbi and threshold demodulators for pulse-driven GMSK signals

Pulse-driven Gaussian minimum shift keying (PDGMSK) was introduced to facilitate a trade between bandwidth efficiency and receiver complexity when using the classical GMSK waveform. The waveform was purposely devised to converge, as the data rate decreases, to SDPSK or DPSK without expanding the absolute bandwidth. This paper studies the optimal coherent demodulation of the PDGMSK waveform, and provides simulation results of a near-optimal Viterbi demodulator and a low-complexity threshold demodulator in both single and multiple carrier settings. Trade-off among the signal-to-noise ratio (SNR), adjacent channel interference (ACI) level and carrier frequency spacing is also provided.

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MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341)

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