Frame Detection of OFDM System with Periodic Pattern Preamble

Sun, Jian; Guo, Zhenhong; Hu, Min; Zhang, Haixia; Yuan, Dongfeng

doi:10.1109/cmc.2010.331

Cited by 3 publications

(5 citation statements)

References 6 publications

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“…A novel solution in which frame detection is accomplished in the frequency domain on the basis of a suitable likelihood ratio test was presented in [6]. Giving consideration to transmitter and receiver mobility, [7] presented a robust symbol timing estimation algorithm for pilot-aided OFDM systems in mobility fading environments, and [8] proposed a frame detection method to manage frequency-selective channels. From the viewpoints of hypothesis testing and classification, [9] proposed a synchronization approach using the fourth-order statistics of training symbols to decrease the probability of false alarm (PFA).…”

Section: State Of the Artmentioning

confidence: 99%

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Improved Detection Metric and Oversampling - based Frame Detector for DSRC Receiver

Li¹,

Liu²,

Van³

2016

JESTR

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In inter-vehicle communication systems based on dedicated short-range communications (DSRC), frame detection is essential for the correct demodulation of a received frame. Owing to the fast mobility of vehicles and the relatively high radio frequency carrying DSRC signals, the frame detection reliability suffers from low signal-to-interference-plus-noise ratio (SINR) and time-varying noise and interference. To address this issue, this study proposed a new detection method to improve the reliability of DSRC receivers in highly dynamic outdoor environments. Specifically, a novel detection metric based on autocorrelation was first proposed to achieve a low and stable probability of false alarm (PFA). Then, the oversampling technique was employed to improve the detection probability (PD) in low-SINR regimes. Finally, a reference design was also presented on a field-programmable gate array (FPGA) for the proposed scheme. Simulation results demonstrated that both low PFA and high PD can be achieved simultaneously in vehicular communications by using the proposed method. Results given by the hardware implementation based on FPGA agree that the feasibility and complexity of our method is acceptable.

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Section: State Of the Artmentioning

confidence: 99%

“…M n is obtained by applying the proposed detection metric (8) to the received sequence of the branch ( ) k r n . Therefore, we have K branch-decisions with the same confidence level.…”

Section: T G T G T H T = *mentioning

confidence: 99%

Improved Detection Metric and Oversampling - based Frame Detector for DSRC Receiver

Li¹,

Liu²,

Van³

2016

JESTR

View full text Add to dashboard Cite

show abstract

“…The input data sequence for a DAC is given by x T =[x [1] x [2] x [3] ... x [n]]. The output waveform (y T =[y [1] y [2] y [3] ... y[4n]]) sampled at 4 times the clock rate of DAC can be calculated by Equation (6) below.…”

Section: ) System Matrix Modelmentioning

confidence: 99%

“…The output waveform (y T =[y [1] y [2] y [3] ... y[4n]]) sampled at 4 times the clock rate of DAC can be calculated by Equation (6) below.…”

Section: ) System Matrix Modelmentioning

confidence: 99%

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Low cost high frequency signal synthesis: Application to RF channel interference testing

Wang

Banerjee

Chatterjee

2015

2015 IEEE 33rd VLSI Test Symposium (VTS)

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The quality of a communication link is commonly indicated by signal to noise/interference ratio and affected by noise and interference variance. To ensure a power efficient adaptive OFDM system's performance, the system needs to be tested against various channel conditions. Conventional algorithms and experiments assume that the noise and interference density stays constant over the OFDM frequency band but in reality the communication link often populated with both white noise and interference that results an uneven impact on OFDM spectrum. To create such channel condition, an upconversion is commonly used. However, due to the non-linearity of the mixer, the up-converted interference is always distorted. The proposed method uses a modified higher-than-Nyquist-rate RF signal generation algorithm to minimize the distortion of generated interference within a pre-defined output bandwidth. Both concept validation and experimental measurement have been conducted to prove the effect of proposed method.

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Shortened frame design for narrowband powerline communication systems

Soman

Kim

2015

2015 IEEE International Conference on Smart Grid Communications (SmartGridComm)

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Frame Detection of OFDM System with Periodic Pattern Preamble

Cited by 3 publications

References 6 publications

Improved Detection Metric and Oversampling - based Frame Detector for DSRC Receiver

Improved Detection Metric and Oversampling - based Frame Detector for DSRC Receiver

Low cost high frequency signal synthesis: Application to RF channel interference testing

Shortened frame design for narrowband powerline communication systems

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