Analysis and Design for Pilot Power Allocation and Placement in OFDM Based Integrated Radar and Communication in Automobile Systems

Hao Wei Hsu, Ming Chun Lee, Meng Xun Gu, Yu Chien Lin, Ta Sung Lee*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, we consider the orthogonal frequency division modulation (OFDM) based integrated radar-communication (Rad-Com) for automobile systems operating in millimeter wave band with imperfect time-frequency synchronization for communications. Since different pilot power allocation and placement strategies can result in different performance, we investigate the power allocation and placement design for the Rad-Com system. We analyze the effect of power allocation and pilot placement on the system performance. Based on the analysis, we provide, along with a channel estimation scheme, the pilot power allocation and placement designs that can optimize the radar and communication performance, respectively. Moreover, the tradeoff between radar and communication performance is discussed and a tradeoff design is presented. We conduct simulations to validate our analysis and evaluate the proposed designs. Results show that our analysis is valid and insightful and the proposed designs are effective.

Original languageEnglish
Pages (from-to)1519-1535
Number of pages17
JournalIEEE Transactions on Vehicular Technology
Volume71
Issue number2
DOIs
StatePublished - 1 Feb 2022

Keywords

  • Integrated radar-communication system
  • OFDM
  • pilot placement
  • pilot power allocation

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