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Millimeter Wave Frontend for Integrated Sensing and Communication System Transceiver on Edge

Jai Mangal, Kshitiz Joshi, Krishna Neel Reddy, Soumya Jain, Shobha Sundar Ram, Sumit J. Darak

TL;DR

Results show that the proposed end-to-end IEEE 802.11ad-based ISAC BS transceiver prototype offers 34% higher throughput than the standard with an ideal MFE, and how these impairments affect radar performance and, in turn, the communication metrics is investigated.

Abstract

IEEE 802.11ad standard uses analog beamforming for high-speed directional communication with mobile user (MU) in the millimeter wave (mmWave) spectrum. However, the lengthy beam alignment procedures involving large data packets between the base station (BS) and the MU introduce considerable overhead, deteriorating the overall throughput. Prior works have proposed 802.11ad-based integrated sensing and communication (ISAC) BS transceivers to eliminate time-consuming beam alignment. Instead, the radar and communication functionalities use the same waveform, spectrum, and millimeter wave front end (MFE) with a common spatial field of view. The radar detects and localizes the MU, enabling the subsequent directional communication with the MU. This work proposes an end-to-end IEEE 802.11ad-based ISAC BS transceiver prototype, wherein the digital baseband hardware frontend on edge is integrated with a Simulink-based MFE. The proposed prototype facilitates a systematic link budget and detailed performance analysis for different wireless channels, target motions, signal-to-noise ratios, hardware configurations, and impairments. We also investigate how these impairments affect radar performance and, in turn, the communication metrics since the performances of both systems are uniquely interrelated in an ISAC system. Our results show that even with hardware impairments, the 802.11ad-based ISAC offers 34% higher throughput than the standard with an ideal MFE.

Millimeter Wave Frontend for Integrated Sensing and Communication System Transceiver on Edge

TL;DR

Results show that the proposed end-to-end IEEE 802.11ad-based ISAC BS transceiver prototype offers 34% higher throughput than the standard with an ideal MFE, and how these impairments affect radar performance and, in turn, the communication metrics is investigated.

Abstract

IEEE 802.11ad standard uses analog beamforming for high-speed directional communication with mobile user (MU) in the millimeter wave (mmWave) spectrum. However, the lengthy beam alignment procedures involving large data packets between the base station (BS) and the MU introduce considerable overhead, deteriorating the overall throughput. Prior works have proposed 802.11ad-based integrated sensing and communication (ISAC) BS transceivers to eliminate time-consuming beam alignment. Instead, the radar and communication functionalities use the same waveform, spectrum, and millimeter wave front end (MFE) with a common spatial field of view. The radar detects and localizes the MU, enabling the subsequent directional communication with the MU. This work proposes an end-to-end IEEE 802.11ad-based ISAC BS transceiver prototype, wherein the digital baseband hardware frontend on edge is integrated with a Simulink-based MFE. The proposed prototype facilitates a systematic link budget and detailed performance analysis for different wireless channels, target motions, signal-to-noise ratios, hardware configurations, and impairments. We also investigate how these impairments affect radar performance and, in turn, the communication metrics since the performances of both systems are uniquely interrelated in an ISAC system. Our results show that even with hardware impairments, the 802.11ad-based ISAC offers 34% higher throughput than the standard with an ideal MFE.
Paper Structure (22 sections, 5 equations, 15 figures, 5 tables)

This paper contains 22 sections, 5 equations, 15 figures, 5 tables.

Table of Contents

  1. Introduction
  2. IEEE 802.11ad based ISAC System Model
  3. 802.11ad based ISAC Signal Model
  4. Radar signal and signal processing
  5. Communication signal and signal processing
  6. Proposed Architecture of ISAC PHY and DFE with Ideal MFE
  7. Transceiver PHY
  8. Radar Signal Processing
  9. Performance and Complexity Analysis of Proposed ISAC with Ideal MFE
  10. Transceiver PHY
  11. Radar Signal Processing
  12. End-to-End ISAC
  13. Effect of Azimuth Precision
  14. Proposed Architecture of MFE with RF Impairments
  15. Radar MFE
  16. ...and 7 more sections

Figures (15)

  • Figure 1: Beam alignment procedures in (a) IEEE 802.11ad standard, and (b) IEEE 802.11ad based ISAC.
  • Figure 2: Block diagram of proposed IEEE 802.11ad based ISAC system.
  • Figure 3: Architecture of 802.11ad based baseband transmitter PHY on FPGA.
  • Figure 4: Architecture of 802.11ad based baseband receiver PHY on FPGA.
  • Figure 5: Architecture of range and azimuth estimation using RSP.
  • ...and 10 more figures