Hybrid Digital-Analog Beamforming and MIMO Radar with OTFS Modulation

09/17/2020
by   Lorenzo Gaudio, et al.
0

Motivated by future automotive applications, we study some joint radar target detection and parameter estimation problems where the transmitter, equipped with a mono-static MIMO radar, wishes to detect multiple targets and then estimate their respective parameters, while simultaneously communicating information data using orthogonal time frequency space (OTFS) modulation. Assuming that the number of radio frequency chains is smaller than the number of antennas over the mmWave frequency band, we design hybrid digital-analog beamforming at the radar transmitter adapted to different operating phases. The first scenario considers a wide angular beam in order to perform the target detection and parameter estimation, while multicasting a common message to all possible active users. The second scenario considers narrow angular beams to send information streams individually to the already detected users and simultaneously keep tracking of their respective parameters. Under this setup, we propose an efficient maximum likelihood scheme combined with hybrid beamforming to jointly perform target detection and parameter estimation. Our numerical results demonstrate that the proposed algorithm is able to reliably detect multiple targets with a sufficient number of antennas and achieves the Cramér-Rao lower bound for radar parameter estimation such as delay, Doppler and angle-of-arrival (AoA).

READ FULL TEXT
POST COMMENT

Comments

There are no comments yet.

Authors

page 1

02/04/2019

Performance Analysis of Joint Radar and Communication using OFDM and OTFS

We consider a joint radar estimation and communication system using orth...
10/04/2019

On the Effectiveness of OTFS for Joint Radar and Communication

We consider a joint radar estimation and communication system using orth...
03/29/2021

MIMO-OFDM Joint Radar-Communications: Is ICI Friend or Foe?

Inter-carrier interference (ICI) poses a significant challenge for OFDM ...
12/16/2021

Joint Analog and Digital Transceiver Design for Wideband Full Duplex MIMO Systems

In this paper, we propose a wideband Full Duplex (FD) Multiple-Input Mul...
09/21/2021

Beam Refinement and User State Acquisition via Integrated Sensing and Communication with OFDM

The performance of millimeter wave (mmWave) communications strongly reli...
10/26/2018

Joint Estimation of DOA and Frequency with Sub-Nyquist Sampling in a Binary Array Radar System

Recently, several array radar structures combined with sub-Nyquist techn...
09/10/2018

Joint Beamforming and Association Design for MIMO Radar

A critical task of a radar receiver is data association, which assigns r...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.