Transceiver Design for Spectrum Sharing between FD Cellular System and MIMO Radar

Sudip Biswas, Keshav Singh, Tharmalingam Ratnarajah

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We consider the spectral coexistence between collocated multiple-input-multiple-output (MIMO) radar and a full-duplex (FD) MIMO cellular system. Considering imperfect channel state information and hardware impairments at the cellular base station (BS), we focus on the design of beamforming matrices at the cellular system via the minimization of sum mean-squared-errors such that the detection probability of the radar is not affected due to spectrum sharing. The formulated problem is non-convex and hence we convert it into an equivalent semidefinite programming problem and propose an iterative algorithm to find the optimal beamforming matrices. Numerical results verify the eminence of spectrum sharing, albeit certain tradeoffs. In particular, using the spectrum shared by the radar, the FD cellular system can achieve an area throughput of around 4-5 Mbps/m 2 for a reasonable self-interference cancellation of around -70 dB. However, to facilitate this, while also maintaining a detection probability of around 0.9, the MIMO radar needs to spend an extra power of around 3-4 dB.
Original languageEnglish
Title of host publication2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
PublisherInstitute of Electrical and Electronics Engineers
ISBN (Electronic)978-1-5386-3512-4
DOIs
Publication statusPublished - 27 Aug 2018
Event19th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018 - Kalamata, Greece
Duration: 25 Jun 201828 Jun 2018

Conference

Conference19th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018
Country/TerritoryGreece
CityKalamata
Period25/06/1828/06/18

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