Phase Synchronization for Non-Binary Coded CCSK Short Frames

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

doi:10.1109/vtc2022-spring54318.2022.9860930

Cited by 3 publications

(2 citation statements)

References 17 publications

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“…In [6,7] the authors introduced novel algorithms of phase and carrier frequency offsets estimation for coded systems. Phase synchronization techniques for non-binary codes were also proposed in [8].…”

Section: Introductionmentioning

confidence: 99%

Carrier phase recovery of LDPC-coded systems based on the likelihood difference algorithm

Imad

Houcke

2023

EURASIP J. Adv. Signal Process.

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The problem of blind phase offset recovery of low density parity-check (LDPC)-coded systems is considered in this paper. We propose a new algorithm of phase offset estimation that involves the computation and maximization of a likelihood difference (LD)-based cost function calculated from the parity-check matrix of the code. We show in this paper that the new cost function has a simplified form compared to another algorithm proposed in the literature and presents similar estimation performance. Mean squared error (MSE) curves show very good performance of the proposed phase offset estimation algorithm, even at low signal-to-noise ratios.

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Section: Introductionmentioning

confidence: 99%

Carrier phase recovery of LDPC-coded systems based on the likelihood difference algorithm

Imad

Houcke

2023

EURASIP J. Adv. Signal Process.

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“…In [9], another detection method called a time-sliding window has been proposed which replaces the frequency domain correlation with a time domain correlation taking full advantage of the QCSP frame structure. In [10] and [11], time, frequency, and phase synchronization This work has been funded by the French ANR under grant number ANR-19-CE25-0013-01 (QCSP Project: https://qcsp.univ-ubs.fr/). methods are proposed and show their good performances for the short-data packet transmission.…”

Section: Introductionmentioning

confidence: 99%

Weighted Coherent Detection of QCSP frames

Saied

Flores

Boutillon

2023

2023 IEEE Wireless Communications and Networking Conference (WCNC)

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A new efficient preamble-less short frame, called Quasi-Cyclic Short Packet (QCSP), has been recently proposed for the Internet of Things (IoT) deployment. It has demonstrated its good performances in the process of detection, synchronization, and error correction in an asynchronous Additive White Gaussian Noise (AWGN) channel, with residual frequency offset, and at a very low Signal-to-Noise Ratio (SNR). The detection process uses the normalized score of a non-coherent frame match filter to assess the presence of a frame or not. In this paper, we improve the detection performance by combining noncoherent detection with coherent detection. The proposed method decreases the probability of miss-detection by two decades, for a given probability of false alarm.

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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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Phase Synchronization for Non-Binary Coded CCSK Short Frames

Cited by 3 publications

References 17 publications

Carrier phase recovery of LDPC-coded systems based on the likelihood difference algorithm

Carrier phase recovery of LDPC-coded systems based on the likelihood difference algorithm

Weighted Coherent Detection of QCSP frames

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

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