Ultra-Wideband Multifunctional Communications/Radar System

Saddik, George N.; Singh, Rahul; Brown, E. R.

doi:10.1109/tmtt.2007.900343

Cited by 193 publications

(103 citation statements)

References 20 publications

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“…These approaches can be mainly classified as either a simultaneous system or a non-simultaneous system. In a simultaneous system, a single-carrier [8], [9] or a multi-carrier waveform [9]- [11] are used for both communication and radar at the same time. In a non-simultaneous system, radar and communication operate in different time intervals [12], [13].…”

Section: Introductionmentioning

confidence: 99%

IEEE 802.11ad-Based Radar: An Approach to Joint Vehicular Communication-Radar System

Kumari

Choi

González–Prelcic

et al. 2018

IEEE Trans. Veh. Technol.

555

418

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Millimeter-wave (mmWave) radar is widely used in vehicles for applications such as adaptive cruise control and collision avoidance. In this paper, we propose an IEEE 802.11ad-based radar for long-range radar (LRR) applications at the 60 GHz unlicensed band. We exploit the preamble of a single-carrier (SC) physical layer (PHY) frame, which consists of Golay complementary sequences with good correlation properties, as a radar waveform. This system enables a joint waveform for automotive radar and a potential mmWave vehicular communication system based on IEEE 802.11ad, allowing hardware reuse.To formulate an integrated framework of vehicle-to-vehicle (V2V) communication and LRR based on a mmWave consumer wireless local area network (WLAN) standard, we make typical assumptions for LRR applications and incorporate the full duplex radar assumption due to the possibility of sufficient isolation and self-interference cancellation. We develop single-and multi-frame radar receiver algorithms for target detection as well as range and velocity estimation within a coherent processing interval. Our proposed radar processing algorithms leverage channel estimation and time-frequency synchronization techniques used in a conventional IEEE 802.11ad receiver with minimal modifications. Analysis and simulations show that in a single target scenario, a Gbps data rate is achieved simultaneously with cm-level range accuracy and cm/s-level velocity accuracy. The target vehicle is detected with a high probability of detection (>99.9%) at a low false alarm of 10 −6 for an equivalent isotropically radiated power (EIRP) of 43 dBm up to a vehicle separation distance of 200 m.

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Section: Introductionmentioning

confidence: 99%

IEEE 802.11ad-Based Radar: An Approach to Joint Vehicular Communication-Radar System

Kumari

Choi

González–Prelcic

et al. 2018

IEEE Trans. Veh. Technol.

555

418

View full text Add to dashboard Cite

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“…Furthermore, the UWB OFDM pulses show greater range side lobes compared to Gaussian pulses and the communication system requires full synchronization between the platforms. Further examining the existing UWB radar-communication systems, we observed that they are either not multi-radar capable [16] or are easily jammed open communication systems [15]. In contrast, we present a multi-functional UWB netted radar with better coexistence of radar and communication abilities, along with inherent transmit waveform covertness and multi-radar capability.…”

Section: Related Workmentioning

confidence: 89%

Cross-layered resource allocation in UWB noise-OFDM-based ad hoc surveillance networks

Surender

Narayanan

Das

2013

J Wireless Com Network

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Situational awareness in military surveillance and emergency responder scenarios requires detection of long range targets and secure communication of this information across a multi-sensor network. A potential approach towards this requirement is to harness the coexisting advantages of radar sensing and wireless communications. A multifunctional communications-embedded radar design that implicitly develops into a cross-layered multi-radar secure wireless ad hoc network is proposed to address this need. First, we demonstrate radar and communications coexistence through analysis of our novel composite orthogonal frequency division multiplexing (OFDM)-embedded ultra wideband (UWB) noise waveform's bit error rate and ambiguity function formulations. Second, to solve the medium access problem of allocating the multiple OFDM frequencies between different ad hoc radars nodes, we propose a simple yet fully distributed, channel-diversity-aided algorithm. It constructs a contention-free network, scaling logarithmically with the number of radar nodes, and analytically guarantees a provable fraction of the maximum throughput achieved by any optimal centralized allocation algorithm. Furthermore, our solution dynamically adapts with channel variations and topology changes. Working in-sync with the UWB noise-based single radio multi-channel wireless platform, this distributed resource allocation builds a synergistic cross-layered ad hoc network of radars.

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“…Example of FDD mode approach with single-carrier waveform is [8], in which a Direct Sequence Spread Spectrum (DSSS) technique is proposed as method to avoid mutual interference between radar and communication data. In [9] the authors proposed a Linear Frequency Modulated (LFM) Minimum Shift Keying (MSK) waveform design while in [10] and [11] an approach based on the orthogonality between up-chirp and down-chirp signals able to reach 1 M b/s at a maximum range of 2 Km is presented and validated, respectively. Orthogonal Frequency Division Multiplexing (OFDM) waveforms [12] are widely used in radar systems nowadays for their high time-bandwidth product, and they also represent a natural candidate for the implementation of a multi-carrier joint radar-communication system [13].…”

Section: Introductionmentioning

confidence: 99%

Fractional fourier based waveform for a joint radar-communication system

Gaglione

Clemente

Ilioudis

et al. 2016

2016 IEEE Radar Conference (RadarConf)

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Abstract-The increasing demand of spectrum resources and the need to keep the size, weight and power consumption of modern radar as low as possible, has led to the development of solutions like joint radar-communication systems. In this paper a novel Fractional Fourier Transform (FrFT) based multiplexing scheme is presented as joint radar-communication technique. The FrFT is used to embed data into chirp sub-carriers with different time-frequency rates. Some optimisation procedures are also proposed, with the objective of improving the bandwidth occupancy and the bit rate and/or Bit Error Ratio (BER). The generated waveform is demonstrated to have a good rejection to distortions introduced by the channel, leading to low BER, while keeping good radar characteristics compared to a widely used Linear Frequency Modulated (LFM) pulse with same duration and bandwidth.

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Ultra-Wideband Multifunctional Communications/Radar System

Cited by 193 publications

References 20 publications

IEEE 802.11ad-Based Radar: An Approach to Joint Vehicular Communication-Radar System

IEEE 802.11ad-Based Radar: An Approach to Joint Vehicular Communication-Radar System

Cross-layered resource allocation in UWB noise-OFDM-based ad hoc surveillance networks

Fractional fourier based waveform for a joint radar-communication system

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