TY - GEN
T1 - Reconfigurable Matched Filtering Using Wideband Margin-Computing Correlators
T2 - 67th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2024
AU - Rashed, Kareem
AU - Undavalli, Aswin Chowdary
AU - Chakrabartty, Shantanu
AU - Natarajan, Arun
AU - Nagulu, Aravind
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - Correlators are fundamental building blocks in radar and communication signal-processing applications. In this paper, a wideband RF correlator based on the margin-computing (MC) paradigm and its applications to radar and communication signal processing are presented. The proposed analog corre-lator replaces traditional multiply-and-accumulate correlators with analog addition-and-thresholding to enable energy-efficient correlation, making it hardware-friendly, scalable, and power-efficient. The prototype IC in 65nm CMOS supports 5GS/s inputs, a large correlation length of 1024, and 8-bit computing accuracy with a high energy efficiency of 152TOPs/J. Measured results of the baseband and direct-RF wavelet processing of impulse radar signatures across varying bandwidths and carrier frequencies are presented. Measured results of code-modulated communication systems with correlator-based signal processing for code-synchronization and code-despreading are also reported.
AB - Correlators are fundamental building blocks in radar and communication signal-processing applications. In this paper, a wideband RF correlator based on the margin-computing (MC) paradigm and its applications to radar and communication signal processing are presented. The proposed analog corre-lator replaces traditional multiply-and-accumulate correlators with analog addition-and-thresholding to enable energy-efficient correlation, making it hardware-friendly, scalable, and power-efficient. The prototype IC in 65nm CMOS supports 5GS/s inputs, a large correlation length of 1024, and 8-bit computing accuracy with a high energy efficiency of 152TOPs/J. Measured results of the baseband and direct-RF wavelet processing of impulse radar signatures across varying bandwidths and carrier frequencies are presented. Measured results of code-modulated communication systems with correlator-based signal processing for code-synchronization and code-despreading are also reported.
KW - code-domain
KW - coherent demodulation
KW - correlation
KW - inner-product
KW - Matched-filters
KW - multiplier-free
KW - radars
UR - http://www.scopus.com/inward/record.url?scp=85204942569&partnerID=8YFLogxK
U2 - 10.1109/MWSCAS60917.2024.10658805
DO - 10.1109/MWSCAS60917.2024.10658805
M3 - Conference contribution
AN - SCOPUS:85204942569
T3 - Midwest Symposium on Circuits and Systems
SP - 773
EP - 777
BT - 2024 IEEE 67th International Midwest Symposium on Circuits and Systems, MWSCAS 2024
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 11 August 2024 through 14 August 2024
ER -