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Green joint radar-communications: RF selection with low resolution DACs and hybrid precoding

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conference contribution
posted on 2023-06-10, 02:23 authored by Aryan KaushikAryan Kaushik, Evangelos Vlachos, Christos Masouros, Christos Tsinos, John Thompson
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 subarrayed 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.

History

Publication status

  • Published

File Version

  • Accepted version

Journal

IEEE International Conference on Communications (ICC)

ISSN

19381883

Publisher

IEEE Xplore

Page range

1-6

Event name

2022 IEEE International Conference on Communications (ICC)

Event location

Seoul, South Korea

Event type

conference

Event date

16–20 May 2022

ISBN

9781538683477

Department affiliated with

  • Engineering and Design Publications

Notes

© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2022-01-19

First Open Access (FOA) Date

2022-01-19

First Compliant Deposit (FCD) Date

2022-01-19

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