Time-Synchronization of CCSK Short Frames

Saied, Kassem; Ghouwayel, Ali Chamas Al; Boutillon, Emmanuel

doi:10.1109/wimob52687.2021.9606328

Cited by 6 publications

(10 citation statements)

References 18 publications

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“…Note that the and phase synchronization protocols are studied and illustrated in [38], [39]. It is worth noticing here that the MC simulations of the whole system give performances that matches (39), considering the synchronization process after the detection is perfect (P ms = 0), i.e. FER = P md + (1 − P md )P .…”

Section: Detection-correction Approach and A Case-study Examplementioning

confidence: 94%

“…For the performance, we assume that the synchronization parameters can be perfectly found after the detection process. Note that the and phase synchronization protocols are studied and illustrated in [38], [39]. It is worth noticing here that the MC simulations of the whole system give performances that matches (39), considering the synchronization process after the detection is perfect (P ms = 0), i.e.…”

Section: Detection-correction Approach and A Case-study Examplementioning

confidence: 94%

“…Aiming to maximize the probability of successful transmission, we must maximize the probability of detection, synchronization, and decoding. For more clarification, Frame Error Rate (FER) is defined as FER = P md + (1 − P md )P ms + (1 − P md )(1 − P ms )P , (39) where P md , P ms and P are the miss detection, miss synchronization and error in correction probabilities respectively.…”

Section: Detection-correction Approach and A Case-study Examplementioning

confidence: 99%

See 2 more Smart Citations

Short Frame Transmission at Very Low SNR by Associating CCSK Modulation With NB-Code

Saied

Ghouwayel

Boutillon

2022

IEEE Trans. Wireless Commun.

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In this paper, we present a frame structure that can be viewed as a preamble for the detection and synchronization process (leading to low cost receiver) and as an encoded codeword carrying the transmitted message (leading to reliable transmission). This duality facilitates an ALOHA protocol avoiding preamble overhead. The frame structure, named Quasi-Cyclic Short Packet (QCSP), is based on the association of a Cyclic Code Shift Keying (CCSK) modulation and a non-binary error control code. The detection/correction algorithm of the QCSP system is presented, its performance is theoretically derived and discussed for different parameters. A QCSP frame can be transmitted and received correctly with an error probability of 10 −4 , distanced by 1.2 dB from Polyanskiy's bound (an estimated Shannon's limit for small packet size) at -11 dB of SNR for a payload of 360 bits. Compared to a classical preamble-based frame using a modern binary error control code, the size of a QCSP frame is reduced by 23%. Moreover, detecting a QCSP frame requires a lower complexity than detecting a longer classical preamble.

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Section: Detection-correction Approach and A Case-study Examplementioning

confidence: 94%

Section: Detection-correction Approach and A Case-study Examplementioning

confidence: 94%

Section: Detection-correction Approach and A Case-study Examplementioning

confidence: 99%

See 1 more Smart Citation

Short Frame Transmission at Very Low SNR by Associating CCSK Modulation With NB-Code

Saied

Ghouwayel

Boutillon

2022

IEEE Trans. Wireless Commun.

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“…This method called "time sliding method", provides only a rough estimate of the time of arrival of the frame as well as a rough estimate of its frequency offset. In [13], an efficient time synchronization technique is described. The method uses the structural properties of the QCSP frame to detect the exact time of arrival of the frame.…”

Section: Introductionmentioning

confidence: 99%

“…The method uses the structural properties of the QCSP frame to detect the exact time of arrival of the frame. In the continuity of the workflow initiated in [9], [12] and [13], this paper presents the final step of the synchronization process, i.e., the suppression of the remaining residual frequency and initial phase offsets. Once the frame fully synchronized, coherent demodulation can be performed to generate the symbol Log-Likelihood Ratio required by the non-binary decoder.…”

Section: Introductionmentioning

confidence: 99%

Phase Synchronization for Non-Binary Coded CCSK Short Frames

Saied

Ghouwayel

Boutillon

2022

2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring)

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This paper proposes a phase and frequency synchronization technique in the context of Cyclic Code Shift Keying (CCSK) modulation associated with Non-Binary Low Density Parity Check Matrix (NB-LDPC) codes. Two methods are proposed. The first, called Direct Method (DM), is a direct estimation of the parameters of a noisy sinusoidal. The second, called Parametric Method (PM), is based on the Maximum Likelihood estimation using a distribution parameterized by the CCSK demodulator and the NB-LDPC decoder. The Frame Error Correction (FEC) results show that the performance of the proposed phase synchronized frame approximately maintains the same performance as when a Genius-Aided estimation is used, or when no phase offset exists. This is achieved at a very low Signal to Noise Ratio (SNR) around -10 dB.

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