TY - GEN
T1 - Spatial-Spectral Mapping Beamspace MIMO Receiver Enabled by a Programmable Space-Time-Modulated Metamaterial Antenna
AU - Vosoughitabar, Shaghayegh
AU - Nooraiepour, Alireza
AU - Bajwa, Waheed
AU - Mandayam, Narayan
AU - Wu, Chung Tse Michael
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - This paper leverages a space-time-modulated metamaterial (ST-MTM) antenna as a beamspace multiple-input multiple-output (MIMO) receiver, which facilitates the retrieval of information from multiple users transmitting distinct data on the same carrier frequency. In this scenario, the information received from each user, located in a specific direction, is mapped to a distinct harmonic frequency component within the received spectrum. The phase constant (β) of each tunable composite right/left-handed (CRLH) unit cell in a leaky wave antenna (LWA) is periodically modulated in the time domain, generating harmonic frequencies around the carrier frequency of the received signal. By applying a proper time-modulated sequence to each unit cell, the power levels of the harmonics, extracted from one port of the receiver, reach their maximum values at different directions, enabling spatial-spectral mapping. The measured bit-error-rate (BER) results, obtained using a fabricated prototype as the receiver, confirm the successful retrieval of data concurrently sent by multiple users.
AB - This paper leverages a space-time-modulated metamaterial (ST-MTM) antenna as a beamspace multiple-input multiple-output (MIMO) receiver, which facilitates the retrieval of information from multiple users transmitting distinct data on the same carrier frequency. In this scenario, the information received from each user, located in a specific direction, is mapped to a distinct harmonic frequency component within the received spectrum. The phase constant (β) of each tunable composite right/left-handed (CRLH) unit cell in a leaky wave antenna (LWA) is periodically modulated in the time domain, generating harmonic frequencies around the carrier frequency of the received signal. By applying a proper time-modulated sequence to each unit cell, the power levels of the harmonics, extracted from one port of the receiver, reach their maximum values at different directions, enabling spatial-spectral mapping. The measured bit-error-rate (BER) results, obtained using a fabricated prototype as the receiver, confirm the successful retrieval of data concurrently sent by multiple users.
KW - metamaterial
KW - multiple-input multiple-output (MIMO)
KW - receiver
KW - space-time-modulated structure
KW - time-modulation
UR - http://www.scopus.com/inward/record.url?scp=85200883219&partnerID=8YFLogxK
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U2 - 10.1109/IMS40175.2024.10600194
DO - 10.1109/IMS40175.2024.10600194
M3 - Conference contribution
AN - SCOPUS:85200883219
T3 - IEEE MTT-S International Microwave Symposium Digest
SP - 931
EP - 934
BT - 2024 IEEE/MTT-S International Microwave Symposium, IMS 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2024 IEEE/MTT-S International Microwave Symposium, IMS 2024
Y2 - 16 June 2024 through 21 June 2024
ER -