Poster: Multi-carrier Modulation on FMCW Radar for Joint Automotive Radar and Communication

Wang, Chang‐Heng; Ozkaptan, Ceyhun D.; Ekici, Eylem; Altintas, Onur

doi:10.1109/vnc.2018.8628459

Cited by 6 publications

(9 citation statements)

References 4 publications

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“…8. From the figures, it is observed that larger communication bandwidths lead to higher interferencerelated degradation in SER performance due to an increase in the R2C interference time ratio, as stated in (30). In addition, the effect of radar interference becomes more severe as the SINR increases, in the sense that additional communication power in the interference case that is required to attain the same SER value as the interference-free case gets larger.…”

Section: R2c Interference Analysismentioning

confidence: 85%

“…A similar study used minimum shift keyed linear frequency modulated spread spectrum signals (MSK-LFM/SS) for RadCom [21]. Orthogonal frequency division multiplexing (OFDM) has been the most extensively investigated option for RadCom [13], [22], [27]- [30] due to its high degree of flexibility and high performance under different propagation conditions [31]- [34]. However, due to the cost-efficient, low-rate analog-to-digital convertors (ADC) preferred in automotive radars today, OFDM cannot fully occupy the radar band (77-81 GHz), limiting its distance resolution capability.…”

Section: Related Workmentioning

confidence: 99%

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RadChat: Spectrum Sharing for Automotive Radar Interference Mitigation

Aydoğdu

Keskin

Garcia

et al. 2021

IEEE Trans. Intell. Transport. Syst.

110

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In the automotive sector, both radars and wireless communication are susceptible to interference. However, combining the radar and communication systems, i.e., radio frequency (RF) communications and sensing convergence, has the potential to mitigate interference in both systems. This article analyses the mutual interference of spectrally coexistent frequency modulated continuous wave (FMCW) radar and communication systems in terms of occurrence probability and impact, and introduces RadChat, a distributed networking protocol for mitigation of interference among FMCW based automotive radars, including self-interference, using radar communications. The results show that RadChat can significantly reduce radar mutual interference in single-hop vehicular networks in less than 80 ms.

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Section: R2c Interference Analysismentioning

confidence: 85%

Section: Related Workmentioning

confidence: 99%

RadChat: Spectrum Sharing for Automotive Radar Interference Mitigation

Aydoğdu

Keskin

Garcia

et al. 2021

IEEE Trans. Intell. Transport. Syst.

110

View full text Add to dashboard Cite

show abstract

“…On the other hand, linear frequency modulated (LFM) radar signals have been integrated with spread spectrum [20], minimum shift keying (MSK) [21], continuous phase modulation (CPM) [22] and multi-carrier modulation such as OFDM [23] to support communication. Due to limited randomness associated with the waveform parameters, the modulation of communication bits into radar waveforms is challenging and this needs to be done in such a way that the degradation in radar performance is acceptable.…”

Section: Waveformsmentioning

confidence: 99%

“…We set the energy of the waveform E = 1 and the frequency separation ∆f = 1/T with T = 1, to maintain the orthogonality between frequencies. 17), ( 18), ( 21), (22) and the NN approximations in (19), (20), (23), (24) are used to generate te analytical approximations. From the plot we can observe that under the AWGN channel, the union bound accurately follows the simulation results in the high SNR regime, while the NN approximation is more accurate in the low SNR regime.…”

Section: Numerical Examplesmentioning

confidence: 99%

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Frequency Permutation Subsets for Joint Radar and Communication

Dayarathna¹,

Senanayake²,

Smith³

et al. 2022

Preprint

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This paper focuses on waveform design for joint radar and communication systems and presents a new subset selection process to improve the communication error rate performance and global accuracy of radar sensing of the random stepped frequency permutation waveform. An optimal communication receiver based on integer programming is proposed to handle any subset of permutations followed by a more efficient sub-optimal receiver based on the Hungarian algorithm. Considering optimum maximum likelihood detection, the block error rate is analyzed under both additive white Gaussian noise and correlated Rician fading. We propose two methods to select a permutation subset with an improved block error rate and an efficient encoding scheme to map the information symbols to selected permutations under these subsets. From the radar perspective, the ambiguity function is analyzed with regards to the local and the global accuracy of target detection. Furthermore, a subset selection method to reduce the maximum sidelobe height is proposed by extending the properties of Costas arrays. Finally, the process of remapping the frequency tones to the symbol set used to generate permutations is introduced as a method to improve both the communication and radar performances of the selected permutation subset.

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Radio Resource Management in Joint Radar and Communication: A Comprehensive Survey

Luong

Hoang

et al. 2021

IEEE Commun. Surv. Tutorials

135

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Joint radar and communication (JRC) has recently attracted substantial attention. The first reason is that JRC allows individual radar and communication systems to share spectrum bands and thus improves the spectrum utilization. The second reason is that JRC enables a single hardware platform, e.g., an autonomous vehicle or a UAV, to simultaneously perform the communication function and the radar function. As a result, JRC is able to improve the efficiency of resources, i.e., spectrum and energy, reduce the system size, and minimize the system cost. However, there are several challenges to be solved for the JRC design. In particular, sharing the spectrum imposes the interference caused by the systems, and sharing the hardware platform and energy resource complicates the design of the JRC transmitter and compromises the performance of each function. To address the challenges, several resource management approaches have been recently proposed, and this paper presents a comprehensive literature review on resource management for JRC. First, we give fundamental concepts of JRC, important performance metrics used in JRC systems, and applications of the JRC systems. Then, we review and analyze resource management approaches, i.e., spectrum sharing, power allocation, and interference management, for JRC. In addition, we present security issues to JRC and provide a discussion of countermeasures to the security issues. Finally, we highlight important challenges in the JRC design and discuss future research directions related to JRC.

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Poster: Multi-carrier Modulation on FMCW Radar for Joint Automotive Radar and Communication

Cited by 6 publications

References 4 publications

RadChat: Spectrum Sharing for Automotive Radar Interference Mitigation

RadChat: Spectrum Sharing for Automotive Radar Interference Mitigation

Frequency Permutation Subsets for Joint Radar and Communication

Radio Resource Management in Joint Radar and Communication: A Comprehensive Survey

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