Performance Characteristics and Metrics for Intra-Pulse Radar-Embedded Communication

Blunt, Shannon D.; Metcalf, Justin G.; Biggs, Casey; Perrins, Erik

doi:10.1109/jsac.2011.111215

Cited by 80 publications

(38 citation statements)

References 12 publications

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“…and frequency resources [48], [49]. From a CRSS viewpoint, however, a more cost-efficient approach would be to embed the communication signal into radar echo waves to mask the data transmission [14], [50], [51]. A general model for the above scenario is composed by a RF tag/transponder within a collection of scattered targets and a radar transceiver.…”

Section: Military Applicationsmentioning

confidence: 99%

“…As such, the communication signal can be hard to recognize at the adversary's side, since it hides itself behind the random clutters and echoes. Nevertheless, it can be easily decoded at the radar by exploiting some a priori knowledge [50]. Accordingly, a number of performance trade-offs among radar sensing, communication rate and information confidentiality can be achieved by well-designed waveforms and advanced signal processing techniques.…”

Section: Military Applicationsmentioning

confidence: 99%

“…Furthermore, α contains the complex reflection coefficients of all the K targets, whileβ contains the complex scattering coefficients of L communication paths. Referring to (50) and (52), X r,1 and X UL,2 are the non-interfered parts of the radar and communication signals, while X r,2 and X UL,1 are the signals in the overlapped period, and finally Z 1 , Z m , Z 2 denote the Gaussian noise matrices.…”

Section: A Receive Signal Modelmentioning

confidence: 99%

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Joint Radar and Communication Design: Applications, State-of-the-Art, and the Road Ahead

Liu

Masouros

Petropulu

et al. 2020

IEEE Trans. Commun.

1,256

602

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For the sake of enhancing the exploitation of the permanently allocated, but potentially under-utilized spectral resources, sharing the frequency bands between radar and communication systems has attracted substantial attention. More explicitly, there is increasing demand for sharing both the frequency band and the hardware platform between these two functionalities, but naturally, its success critically hinges on highquality joint sensing and communications. In this paper, we firstly overview the application scenarios and the research progress in the area of communication and radar spectrum sharing, with particular emphasis on: 1) Radar-communication coexistence; 2) Dual-functional radar-communication (DFRC) systems. In the remainder of the paper, we propose a novel transceiver architecture and frame structure for a DFRC base station (BS) operating in the millimeter wave (mmWave) band, using the hybrid analog-digital (HAD) beamforming technique. We assume that the BS is serving a multi-antenna aided user equipment (UE) operating in a mmWave channel, which in the meantime actively detects multiple targets. Note that part of the targets also play the role of scatterers for the communication signal. Given this framework, we then propose a novel scheme for joint target search and communication channel estimation relying on the omni-directional pilot signals generated by the HAD structure. Given a fully-digital communication precoder and a desired radar transmit beampattern, we propose to design the analog and digital precoders under non-convex constant-modulus (CM) and power constraints, such that the BS can formulate narrow beams towards all the targets, while pre-equalizing the impact of the communication channel. Furthermore, we design an HAD receiver that can simultaneously process signals from the UE and echo waves from the targets. By tracking the angular variation of the targets, we show that it is possible to recover the target echoes and mitigate the potential interference imposed on the UE signals by invoking the successive interference cancellation (SIC) technique, even when the radar and communication signals share the equivalent signal-to-noise ratio (SNR). The feasibility and the efficiency of the proposed approaches in realizing DFRC are verified via numerical simulations. Finally, our discussions are summarized by overviewing the open problems in the research field of CRSS.

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Section: Military Applicationsmentioning

confidence: 99%

Section: Military Applicationsmentioning

confidence: 99%

Section: A Receive Signal Modelmentioning

confidence: 99%

See 1 more Smart Citation

Joint Radar and Communication Design: Applications, State-of-the-Art, and the Road Ahead

Liu

Masouros

Petropulu

et al. 2020

IEEE Trans. Commun.

1,256

602

View full text Add to dashboard Cite

show abstract

“…Finding the exact MLE in (16) is not trivial, thus a grid search is performed to obtainτ from its discrete-time model τ p = p 1 P ∆f , with p = 0 . .…”

Section: Estimation Performance Evaluationmentioning

confidence: 99%

Additional DoF in Cooperative Radar-Communications Systems

Bică

Koivunen

2018

2018 52nd Asilomar Conference on Signals, Systems, and Computers

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A novel cooperative radar-communications system is proposed in this paper, where the communications base station acts as a bistatic radar receiver. Thanks to the cooperation between the two systems, the radar can benefit from an additional target channel. It is shown, using both analytical results and simulations, that the radar can improve its estimation performance in the proposed scenario. Radar waveform optimization based on Cramér-Rao Bound minimization is also presented in this paper. Using the obtained power allocation solutions it is shown that in the proposed cooperative scenario the radar gains an additional degree of freedom for optimally using its power budget.

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“…In [17], a two-stage Neyman Pearson detector was presented, which can ensure the reliability of detection at the cooperative receiver. To assess the performance of the REC system, performance characteristics and metrics were discussed in [18].…”

Section: Introductionmentioning

confidence: 99%

Orthogonal Waveform Design for Radar-Embedded Communications

Huang

et al. 2019

Electronics

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This paper focuses on the waveform design for a radar-embedded communication (REC) system which can achieve covert communication while improving the spectrum utilization. In order to solve the problem that the conventional embedded communication waveforms are not orthogonal, this paper proposes the orthogonal weighted-combining (OWC) strategy and the orthogonal dominant-projection (ODP) strategy. Furthermore, the OWC strategy can be broken into two strategies: constrained weighted-combining (CWC) strategy and improved weighted-combining (IWC) strategy. Theoretical analysis and simulation results have shown that these three strategies can dramatically improve communication reliability. Moreover, the performance of the strategies mentioned above has been assessed by the low probability of intercept (LPI) metric. Comparing to the traditional strategies, the IWC strategy shows better LPI performance while the CWC strategy and ODP strategy remain unchanged. Additionally, the ODP strategy can also reduce computational complexity and response delay, which is rather important in the REC system. Any of the three strategies can be selected in accordance with the needs of the application scenario.

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Performance Characteristics and Metrics for Intra-Pulse Radar-Embedded Communication

Cited by 80 publications

References 12 publications

Joint Radar and Communication Design: Applications, State-of-the-Art, and the Road Ahead

Joint Radar and Communication Design: Applications, State-of-the-Art, and the Road Ahead

Additional DoF in Cooperative Radar-Communications Systems

Orthogonal Waveform Design for Radar-Embedded Communications

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