[FCTLab Seminar - Dr. Sumit J. Darak ] 

IEEE 802.11ad Based Integrated Sensing and Communication (ISAC): Design, Prototype and Performance Analysis 

Millimeter wave communication will potentially form the backbone of vehicle-to-X communications in next-generation intelligent transportation systems due to the high bandwidth. Existing sub-6 GHz V2X communication strategies such as dedicated short-range communication services on IEEE802.11p based wireless technology, device-to-device (D2D-LTE V2X) communications, and cellular LTE-V2X communications modes operate below 6GHz and hence are restricted to tens of megabits per second data rates with latency of the order of few milliseconds. Due to the high propagation loss at millimeter-wave carrier frequencies, they are meant to operate in short-range line-of-sight conditions with highly directional beams realized through beamforming. In high mobility environments, rapid beam training will result in considerable overhead and significant deterioration of latency. Alternatively, auxiliary sensors such as GPS or standalone radars can aid in beam alignment of the communication systems. However, deploying auxiliary sensors increases the cost and complexity in terms of synchronization and data processing and poses challenges in terms of interference.

An integrated sensing and communications framework based on the IEEE 802.11ad protocol is presented in the talk to overcome these limitations. The augmentation of the radar functionality within the existing communication framework will result in both systems cohabiting a common spectrum and sharing hardware resources. This will reduce cost and complexity as well as mitigate interference.  The talk will present the recommendation to enable the IEEE 802.11ad framework to support the radar-based localization of mobile users while maintaining compatibility with the existing communication protocol requirements, signal processing, and online learning-based algorithms for supporting radar-based detection and localization of mobile users as well as estimation of channel conditions in both static and quasi-static scenarios. In the end, the complete end-to-end software prototype for baseband, digital, and analog front-end of the dual functional transceiver at the base station; the hardware prototype of the ISAC via hardware-software co-design and fixed point analysis; and the evaluation of the improvement of the communication link metrics (throughput, bit error rate) due to ISAC will be demonstrated. 

Venue: Academic Plaza, DV-AP-AM Family Capital Foundation, SIT@Dover 

Date: 24 May 2024 (Friday)

Time: 2pm