Collaborative Wideband Compressed Signal Detection in Interplanetary Internet
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Yulin Wang
,
Gengxin Zhang
Abstract
As the development of autonomous radio in deep space network, it is possible to actualize communication between explorers, aircrafts, rovers and satellites, e.g. from different countries, adopting different signal modes. The first mission to enforce the autonomous radio is to detect signals of the explorer autonomously without disturbing the original communication. This paper develops a collaborative wideband compressed signal detection approach for InterPlaNetary (IPN) Internet where there exist sparse active signals in the deep space environment. Compressed sensing (CS) can be utilized by exploiting the sparsity of IPN Internet communication signal, whose useful frequency support occupies only a small portion of an entirely wide spectrum. An estimate of the signal spectrum can be obtained by using reconstruction algorithms. Against deep space shadowing and channel fading, multiple satellites collaboratively sense and make a final decision according to certain fusion rule to gain spatial diversity. A couple of novel discrete cosine transform (DCT) and walsh-hadamard transform (WHT) based compressed spectrum detection methods are proposed which significantly improve the performance of spectrum recovery and signal detection. Finally, extensive simulation results are presented to show the effectiveness of our proposed collaborative scheme for signal detection in IPN Internet. Compared with the conventional discrete fourier transform (DFT) based method, our DCT and WHT based methods reduce computational complexity, decrease processing time, save energy and enhance probability of detection.
©2014 by Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- Frontmatter
- Circularly Polarized Double Layered Printed Hemispherical Helical Antenna with a Parasitic Wire for Bandwidth Enhancement
- Broadband CPW-fed Circularly Polarized Falcate-shaped Monopole Antenna for UWB Applications
- Design of Microstrip LPF with Sharp Cut-off Frequency and Wide Stopband
- A Miniaturized Branch Line Coupler with Harmonic Suppression
- Thermal and Structural Analysis of Co-axial Coupler used in High Power Helix Traveling-Wave Tube
- Mie Series for Electromagnetic Scattering of a Conducting Sphere Coated with Chiral Metamaterials
- Experiments on Tree Reflectivity at C, X, K and Ka-bands
- Performance Analysis of Beamforming in Fixed-gain AF Relay Networks with Asymmetric Correlated Fading Channels
- Efficient Service Delivery for High-speed Railway Communications Using MIMO and Access Control Technique
- Relay Selection Based Double-Differential Transmission for Cooperative Networks with Multiple Carrier Frequency Offsets: Model, Analysis, and Optimization
- Collaborative Wideband Compressed Signal Detection in Interplanetary Internet
