TY - JOUR
T1 - Bistatic MIMO DFRC System Waveform Design via Symbol Distance/Direction Discrimination
AU - Guo, Baoxi
AU - Liang, Junli
AU - Tang, Bo
AU - Li, Lixin
AU - So, Hing Cheung
N1 - Publisher Copyright:
© 1991-2012 IEEE.
PY - 2023
Y1 - 2023
N2 - In this article, we address the problem of waveform design for bistatic multiple-input multiple-output dual-function radar-communication system with focuses on both the multi-user interference based symbol error rate (SER) of the communication side and the Cramér-Rao lower bounds (CRLBs) for direction-of-departure (DOD) and direction-of-arrival (DOA) of target from the radar side. Particularly, we minimize the maximal ratio of the error distances from desired symbols to the distances from undesired symbols, referred to as 'discriminant' distances, to enhance the separability of received symbols, which in turn improves the SER. While we derive two CRLB constraints on DOD and DOA separately as the semi-definite programming formulations to avoid complex computation from fractional constraints via constructing two special positive semi-definite matrices. Moreover, the aforementioned 'distance-similarity'-based metric is extended to the 'direction-similarity'-based metric. Numerical results demonstrate the effectiveness of our proposed communication metrics and design solutions in terms of SER performance and robustness against non-linear phase-noise compared with the competing methods.
AB - In this article, we address the problem of waveform design for bistatic multiple-input multiple-output dual-function radar-communication system with focuses on both the multi-user interference based symbol error rate (SER) of the communication side and the Cramér-Rao lower bounds (CRLBs) for direction-of-departure (DOD) and direction-of-arrival (DOA) of target from the radar side. Particularly, we minimize the maximal ratio of the error distances from desired symbols to the distances from undesired symbols, referred to as 'discriminant' distances, to enhance the separability of received symbols, which in turn improves the SER. While we derive two CRLB constraints on DOD and DOA separately as the semi-definite programming formulations to avoid complex computation from fractional constraints via constructing two special positive semi-definite matrices. Moreover, the aforementioned 'distance-similarity'-based metric is extended to the 'direction-similarity'-based metric. Numerical results demonstrate the effectiveness of our proposed communication metrics and design solutions in terms of SER performance and robustness against non-linear phase-noise compared with the competing methods.
KW - Cramér-Rao lower bound (CRLB)
KW - Dual-function radar-communication (DFRC) system
KW - multiple-input multiple-output (MIMO)
KW - non-linear phase-noise (NLPN)
KW - symbol error rate (SER)
UR - http://www.scopus.com/inward/record.url?scp=85174848323&partnerID=8YFLogxK
U2 - 10.1109/TSP.2023.3322815
DO - 10.1109/TSP.2023.3322815
M3 - 文章
AN - SCOPUS:85174848323
SN - 1053-587X
VL - 71
SP - 3996
EP - 4010
JO - IEEE Transactions on Signal Processing
JF - IEEE Transactions on Signal Processing
ER -