Experimentation with Prolate Spheroidal Wave Function Pulses for Physical-Layer Security

摘要

Prolate spheroidal wave functions (PSWF) are a temporally orthogonal set of waveforms in which energy is concentrated in a finite time window and finite bandwidth. In wireless communications, where binary information is encoded onto a sequence of pulses, individual symbols can conceivably be represented by different orders of PSWF pulse shapes for transmission. Because these pulses have approximately constant bandwidth and pulsewidth across all orders, they are an interesting alternative to conventional modulation formats. Although they are certainly capable of improving spectral efficiency and data capacity, in this study we investigate their feasibility in achieving physical-layer security in wireless RF transmissions.