Interference Utilization for Spectrum Sharing Radar-Communication Systems

This paper proposes a new transmitter precoding approach for co-existence between multiple-input multiple-output (MIMO) radar and multi-user MIMO communication systems employing phase shift keying (PSK) modulation. To enable the satisfactions of radar communication functionalities, the common practi...

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Bibliographic Details
Published inIEEE transactions on vehicular technology Vol. 70; no. 8; pp. 8304 - 8308
Main Authors Hong, Bingqing, Wang, Wen-Qin, Liu, Cong-Cong
Format Journal Article
LanguageEnglish
Published New York IEEE 01.08.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
bit error rate
Communication
Communications systems
ergodic interference alignment
interference exploitation
MIMO communication
Phase shift keying
Radar
radar-communication
Signal to noise ratio
Spectrum sharing
transmit beamforming
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Summary:This paper proposes a new transmitter precoding approach for co-existence between multiple-input multiple-output (MIMO) radar and multi-user MIMO communication systems employing phase shift keying (PSK) modulation. To enable the satisfactions of radar communication functionalities, the common practice is to suppress the mutual interferences, while our proposed scheme is to use the known interferences existing already in radar and communications systems and make the most of them: selectively reverse the destructive interferences to the negative direction while retaining the interferences which are beneficial to the desired signal. The resulting interferences are always kept constructive and can contribute to the power of the useful signal. Numerical results validate that the effective signal to noise ratio (SNR) can be enhanced by 7 dB with no additional power-peruser investment.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2021.3092410