Sensor Fusion and Resource Management in MIMO-OFDM Joint Sensing and Communication

TL;DR

This paper presents an integrated MIMO-OFDM system that combines sensing and communication through innovative data fusion, resource management, and tracking algorithms, enhancing target detection and network efficiency in urban scenarios.

Contribution

It introduces a novel data fusion technique, a resource management framework, and a comprehensive channel model for joint sensing and communication in MIMO-OFDM networks.

Findings

Improved target localization accuracy using the proposed fusion and tracking methods.

Enhanced system performance with optimized resource allocation strategies.

Effective management of network overhead through excision filtering.

Abstract

This study explores the promising potential of integrating sensing capabilities into multiple-input multiple-output (MIMO)-orthogonal frequency division multiplexing (OFDM)-based networks through innovative multi-sensor fusion techniques, tracking algorithms, and resource management. A novel data fusion technique is proposed within the MIMO-OFDM system, which promotes cooperative sensing among monostatic joint sensing and communication (JSC) base stations by sharing range-angle maps with a central fusion center. To manage data sharing and control network overhead introduced by cooperation, an excision filter is introduced at each base station. After data fusion, the framework employs a three-step clustering procedure combined with a tracking algorithm to effectively handle point-like and extended targets. Delving into the sensing/communication trade-off, resources such as transmit power, frequency, and time are varied, providing valuable insights into their impact on the overall system performance. Additionally, a sophisticated channel model is proposed, accounting for complex urban propagation scenarios and addressing multipath effects and multiple reflection points for extended targets like vehicles. Evaluation metrics, including optimal sub-pattern assignment (OSPA), downlink sum rate, and bit rate, offer a comprehensive assessment of the system's localization and communication capabilities, as well as network overhead.