Waveform Design in MIMO Radar Using Radial Point Interpolation Method
| Autor: | Mehdi Rashid, Sadjad Imani, Mostafa Bolhasani, Seyed Ali Ghorashi |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
020301 aerospace & aeronautics
Computer science 020206 networking & telecommunications Keying 02 engineering and technology Function (mathematics) Derivative Computer Science Applications 0203 mechanical engineering Modulation Modeling and Simulation 0202 electrical engineering electronic engineering information engineering Waveform Point (geometry) Electrical and Electronic Engineering Algorithm Phase-shift keying Interpolation |
| Zdroj: | IEEE Communications Letters. 22:2076-2079 |
| ISSN: | 2373-7891 1089-7798 |
| DOI: | 10.1109/lcomm.2018.2864302 |
| Popis: | In this letter, we consider the problem of waveform design in colocated multiple-input multiple-output radars in order to obtain a desired beampattern. In this problem, practical constraints, such as constant envelope (CE) and low peak-to-average power ratio, are very important. Therefore, we propose a simple method to generate some practical waveforms, such as different versions of phase-shift keying and pulse-amplitude modulation. We map a non-CE to the desired finite alphabet by a mapping function (MP). In the proposed method, first, the values of cross-correlation relationship between the input and the output of MP are calculated in a few points, and then, using radial point interpolation method, the mentioned relationship and its first-order derivative are derived in the remaining points. Finally, we use the obtained derivative in order to design the desired waveform in an unconstraint problem by a gradient descend algorithm. Simulation results show that there are many different waveforms on which the proposed method can approximate the desired beampattern with a high accuracy. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|