All-Digital Synchronization for SC/OFDM Mode of IEEE 802.15.3c and IEEE 802.11ad

Liu, Wei-Chang; Wei, Ting-Chen; Huang, Ya-Shiue; Chan, Ching-Da; Jou, Shyh-Jye

doi:10.1109/tcsi.2014.2361035

Cited by 59 publications

(48 citation statements)

References 15 publications

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“…In numerical simulations, we achieve the velocity MSE very close to its CRLB. The singleframe range estimation MSE is quite close to its CRLB and the slight difference between them, which is less than 2 cm 2 , is due to the limited accuracy of the employed WLAN symbol synchronization techniques [23], [24].…”

Section: Introductionmentioning

confidence: 61%

“…In the communication module, training sequences in the preamble of a single frame are used for time/frequency synchronizations and channel estimation [23]. This is achieved in several steps: 1) coarse time synchronization based on preamble detection techniques using the STF; 2) frequency offset estimation using the STF; 3) fine time synchronization using the CEF symbol boundary detection and the STF/CEF peak detection techniques; and 4) channel estimation using the CEF.…”

Section: A Communication Preamble Processing Per Framementioning

confidence: 99%

“…The carrier frequency offset (CFO) can be estimated by using the auto-correlation based algorithm and residual CFO estimation techniques proposed in [23]. For simplicity, we assume that these algorithms achieve perfect carrier frequency offset compensation.…”

Section: A Communication Preamble Processing Per Framementioning

confidence: 99%

“…The timing synchronization at the m th frame can also be fine tuned by performing phasedbased CEF symbol boundary detection [23]. This method, however, does not perform well in the presence of Doppler shift at low SNR of the received communication signal.…”

Section: A Communication Preamble Processing Per Framementioning

confidence: 99%

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

Kumari

Choi

González–Prelcic

et al. 2018

IEEE Trans. Veh. Technol.

560

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: 61%

Section: A Communication Preamble Processing Per Framementioning

confidence: 99%

Section: A Communication Preamble Processing Per Framementioning

confidence: 99%

Section: A Communication Preamble Processing Per Framementioning

confidence: 99%

See 2 more Smart Citations

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

Kumari

Choi

González–Prelcic

et al. 2018

IEEE Trans. Veh. Technol.

560

418

View full text Add to dashboard Cite

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“…A joint preamble/boundary detection (PD/BD) and carrier/sampling frequency offset (CFO/SFO) estimation scheme is proposed in our previous design [6]. The detection and estimation scheme is based on the auto-correlation structure as illustrated in Fig.…”

Section: A Synchronization and Channel Estimationmentioning

confidence: 99%

A 3.52 Gb/s mmWave baseband with delayed decision feedback sequence estimation in 40 nm

Preyss¹,

Senning²,

Burg³

et al. 2015

2015 IEEE Asian Solid-State Circuits Conference (A-Sscc)

Self Cite

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Abstract-We present a digital baseband ASIC for 60 GHz singlecarrier (SC) transmission that is optimized for communication scenarios in which most of the energy is concentrated in the first few channel taps. Such scenarios occur for example in office environments with strong reflections. Our circuit targets close-to-optimum maximum-likelihood performance under such conditions. To this end, we show for the first time how a reduced-state-sequence-estimation algorithm can be realized for the 1760 MHz bandwidth of the IEEE 802.11ad standard. The equalizer is complemented in the frontend by a synchronization unit for frequency offset compensation as well as a Golay-sequence based channel estimator and in the backend by an low density parity check (LDPC) decoder. In 40nm CMOS we achieve a measured data rate of up to 3.52 Gb/s using QPSK modulation.

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Theory on asymmetrical coupled‐parallel‐line transmission and reflection zeros

Ravelo

2017

Circuit Theory & Apps

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Summary This paper treats an innovative methodology on the synthesis mechanism of the coupled‐parallel‐line (CPL) transmission zero (TZ) and reflection zero (RZ). The CPL structure under study is configured as a reflection type distributed arbitrarily loaded stub circuits. On the basis of the equivalent Z‐matrix analysis, the CPL input impedance theoretical model is established. Mathematical analysis is performed to predict accurately the TZ and RZ frequency shifts in function of the CPL physical parameters. The input impedance behavioral model in function of asymmetrical CPL load parameters is determined. The TZ and RZ existence conditions are established. Then, the characteristic equations illustrating the TZ and RZ fundamental formulas in function of the CPL coupling coefficient and characteristic impedances are examined. Furthermore, innovative graphical representations of the TZ and RZ existence conditions in function of the CPL parameter ranges are explored. The developed CPL model was validated with different cases of simulated microstrip proof of concept. As expected, a good correlation between the TZ and RZ frequency shifts from the analytical calculations and simulations is obtained. The developed CPL model is useful for the TZ and RZ frequency shifts fast monitoring during the Radio Frequency (RF)/microwave circuit design phase. Copyright © 2017 John Wiley & Sons, Ltd.

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All-Digital Synchronization for SC/OFDM Mode of IEEE 802.15.3c and IEEE 802.11ad

Cited by 59 publications

References 15 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

A 3.52 Gb/s mmWave baseband with delayed decision feedback sequence estimation in 40 nm

Theory on asymmetrical coupled‐parallel‐line transmission and reflection zeros

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