Kaushik, A;
Vlachos, E;
Masouros, C;
Tsinos, C;
Thompson, J;
(2022)
Green Joint Radar-Communications: RF Selection with Low Resolution DACs and Hybrid Precoding.
In:
IEEE International Conference on Communications.
(pp. pp. 3160-3165).
IEEE: Seoul, Republic of Korea.
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Abstract
This paper considers a multiple-input multiple-output (MIMO) joint radar-communication (JRC) transmission with hybrid precoding and low resolution digital to analog converters (DACs). An energy efficient radio frequency (RF) chain and DAC bit selection approach is presented for a sub-arrayed hybrid MIMO JRC system. We introduce a weighting formulation to represent the combined radar-communications information rate. The presented selection mechanism is incorporated with fractional programming to solve an energy efficiency maximization problem for JRC which selects the optimal number of RF chains and DAC bit resolution. Subsequently, a weighted minimization problem to compute the precoding matrices is formulated, which is solved using an alternating minimization approach. The numerical results show the effectiveness of the proposed method in terms of high energy efficiency whilst maintaining good rate and desirable radar beampattern performance.
| Type: | Proceedings paper |
|---|---|
| Title: | Green Joint Radar-Communications: RF Selection with Low Resolution DACs and Hybrid Precoding |
| Event: | ICC 2022 - IEEE International Conference on Communications |
| Dates: | 16 May 2022 - 20 May 2022 |
| ISBN-13: | 9781538683477 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ICC45855.2022.9838485 |
| Publisher version: | https://doi.org/10.1109/ICC45855.2022.9838485 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Joint radar-communications, energy efficient, RF chain optimization, low resolution DACs, hybrid precoder |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10157892 |
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