2018
DOI: 10.1109/tsp.2018.2833813
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MIMO Radar and Cellular Coexistence: A Power-Efficient Approach Enabled by Interference Exploitation

Abstract: Abstract-We propose a novel approach to enable the coexistence between Multi-Input-Multi-Output (MIMO) radar and downlink multi-user Multi-Input-Single-Output (MU-MISO) communication system. By exploiting the constructive multi-user interference (MUI), the proposed approach trades-off useful MUI power for reducing the transmit power, to obtain a power efficient transmission. This paper focuses on two optimization problems: a) Transmit power minimization at the base station (BS) while guaranteeing the receive s… Show more

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Cited by 169 publications
(100 citation statements)
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References 44 publications
(64 reference statements)
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“…Cui et al [67] have further proposed an interference alignment based transmit precoding design with special emphasis on the degree of freedom (DoF), under the scenario where multiple communication users coexist with multiple radar users. More recently, a constructive interference based beamforming design has been proposed for the coexistence scenario [68], where the known DL multi-user interference (MUI) is utilized for enhancing the useful signal power. As a result, the SINR of the DL users is significantly improved compared to that of [66] given the same transmit power budget.…”
Section: ) Optimization Based Designsmentioning
confidence: 99%
See 1 more Smart Citation
“…Cui et al [67] have further proposed an interference alignment based transmit precoding design with special emphasis on the degree of freedom (DoF), under the scenario where multiple communication users coexist with multiple radar users. More recently, a constructive interference based beamforming design has been proposed for the coexistence scenario [68], where the known DL multi-user interference (MUI) is utilized for enhancing the useful signal power. As a result, the SINR of the DL users is significantly improved compared to that of [66] given the same transmit power budget.…”
Section: ) Optimization Based Designsmentioning
confidence: 99%
“…Remark 2: There might also exist targets that are neither significant scatterers in the communication channel nor of any interest to the DFRC BS. For notational convenience and following most of the seminal literature in the area [59], [62], [64], [66], [68], [98], we will not discuss such targets in detail and simply incorporate the generated interference in the noise term.…”
Section: System Modelmentioning
confidence: 99%
“…Here, L R is the total number of time samples used for the RS's communication. For the ease of derivation, hereinafter we assume that the time duration of the RS's waveform is the same as the communication signals with L R = L [11].…”
Section: System Modelmentioning
confidence: 99%
“…In this approach, the communication system is permitted to transmit signals if and only if the space and frequency spectra are not being utilised by the radar, hence prohibiting simultaneous operation of the radar and communication system. To alleviate this issue, LSA/ASA was studied in [4], [5], which allows for the channel state information (CSI) of both systems to be accessible to each other to an extent, where by techniques, such as null-space projection (NSP) of waveforms [10], beamforming [11], etc., can be utilised to mitigate interference at the coexisted systems. Furthermore, to increase waveform diversity and attain higher detection probability, the rotating radar was extended to multiple-input multiple-output (MIMO) radar in [14]- [17].…”
mentioning
confidence: 99%
“…Multipleinput multiple-output (MIMO) radar systems in which a subset of the antenna array is allocated to radar and the rest to communications were studied in [13], along with the setup in which both functionalities utilize all the antennas. Methods for treating the effect of spectrally interfering separate radar and communication systems were studied in [14], [15], while [16] analyzed the effect of radar interference on communication systems. Frequency allocation among radar and communications was considered in [17].…”
Section: Introductionmentioning
confidence: 99%