arxivcs.NI2026-07-21
Structured Spectral Compression based Low-Bitrate Secure Speech Communications for Internet of Things assisted Non-Terrestrial Networks
Li Ping Qian, Zhehan Chen, Qianru Wang, Qian Wang, Yuan Wu, Xuemin Sherman Shen
This paper focuses on the Low-Bitrate Secure Speech Communications based on the Structured Spectral Compression (LB-S2C2). Specifically, the Mel spectral matrix of the speech signal is first encoded at the transmitter side through compressive sensing based on waveform segmentatio…