Optimal Power Allocation Strategy in a Joint Bistatic Radar and Communication System Based on Low Probability of Intercept

Abstract

In this paper, we investigate a low probability of intercept (LPI)-based optimal power allocation strategy for a joint bistatic radar and communication system, which is composed of a dedicated transmitter, a radar receiver, and a communication receiver. The joint system is capable of fulfilling the requirements of both radar and communications simultaneously. First, assuming that the signal-to-noise ratio (SNR) corresponding to the target surveillance path is much weaker than that corresponding to the line of sight path at radar receiver, the analytically closed-form expression for the probability of false alarm is calculated, whereas the closed-form expression for the probability of detection is not analytically tractable and is approximated due to the fact that the received signals are not zero-mean Gaussian under target presence hypothesis. Then, an LPI-based optimal power allocation strategy is presented to minimize the total transmission power for information signal and radar waveform, which is constrained by a specified information rate for the communication receiver and the desired probabilities of detection and false alarm for the radar receiver. The well-known bisection search method is employed to solve the resulting constrained optimization problem. Finally, numerical simulations are provided to reveal the effects of several system parameters on the power allocation results. It is also demonstrated that the LPI performance of the joint bistatic radar and communication system can be markedly improved by utilizing the proposed scheme.

Low Probability of Intercept-Based Optimal Power Allocation Scheme for an Integrated Multistatic Radar and Communication System

“…The problem of resource allocation for multiple target tracking in MIMO radar systems is addressed in [21]- [25], wherein it is shown that the resource utilization efficiency can be improved remarkably. A pioneer LPI optimization for a joint bistatic radar and communication system is introduced in [26], where the authors minimize the total transmitted power for desired requirements of radar target detection and communication rate. However, the study in [26] focuses only on the integrated bistatic system.…”

“…A pioneer LPI optimization for a joint bistatic radar and communication system is introduced in [26], where the authors minimize the total transmitted power for desired requirements of radar target detection and communication rate. However, the study in [26] focuses only on the integrated bistatic system. For the multistatic case, the limitations and derivations are much more complicated.…”

ECCM Schemes against Deception Jamming Using OFDM Radar with Low Global PAPR

“…In a word, a modern radar is required to detect targets in the midst of high-power jamming. It is worth noticing that, recently, the orthogonal frequency division multiplexing (OFDM) technique has been introduced to the array signal processing [3][4][5], and the joint radar and communication system [6,7]. Considering the demands of the military, the ECCM technology of the OFDM radar is investigated in this paper.…”

Resource Allocation for a Wireless Powered Integrated Radar and Communication System

“…The designed waveform is adaptive to the environment and can improve the performance. Recently, the authors in [8] and [9] studied the resource allocation problem and the robust OFDM radar waveform design problem, respectively. The optimal power allocation strategy and the robust waveform have been designed.…”

“…Different from the works in [8] and [9], it is the first time that a wireless powered IRC system is proposed. The transmission energy of the wireless power station is minimized by jointly optimizing the energy beamforming vector, energy harvesting time and the transmit power.…”