Jean-Yves Chouinard is a professor with the Department of Electrical and Computer Engineering at Laval University. His research interests are in secure communication networks, wireless communications, and signal processing for radar applications. He is the author/co-author of more than 200 journal, conference papers and technical reports. He is an editor of a book on information theory and co-author of book chapters on MIMO wireless communication systems and on OFDM-based mobile broadcasting. He is an Editor for the IEEE Transactions on Vehicular Technology and Associate Editor for the IEEE Transactions on Broadcasting. He serves or has served on several conference committees including General Co-chair for the Canadian Workshop on Information Theory (CWIT 2017), Technical Program Co-chair for the 2012 Vehicular Technology Conference (VTC’2012 Fall) and Publications Chair for the IEEE International Symposium on Information Theory (ISIT'2008).
In 'Cassegrain v Gerard Cassegrain and Co Pty Limited' [2015] HCA 2 (Cassegrain), the Hig... more In 'Cassegrain v Gerard Cassegrain and Co Pty Limited' [2015] HCA 2 (Cassegrain), the High Court gave consideration to the fraud exception to indefeasibility of title under the Real Property Act 1900 (NSW) (RPA). In particular, the court found that a person's proprietary interest as a joint tenant in real property was not defeasible merely on account of a fraudulent act committed by a second joint tenant, to which the first joint tenant was not a party.
Abstract System performance of mobile wireless communications is limited by fast channel variatio... more Abstract System performance of mobile wireless communications is limited by fast channel variations, which are mostly due to the mobility of user terminals and scatterers. In order to obtain the optimal system performance, precise knowledge of the channel variations is ...
2000 Canadian Conference on Electrical and Computer Engineering. Conference Proceedings. Navigating to a New Era (Cat. No.00TH8492)
We present the results of a simulation of a communication system using QPSK modulation over a fre... more We present the results of a simulation of a communication system using QPSK modulation over a frequency non-selective, fast fading channel. The presence of fast fading leads to the presence of a bit error probability floor in the performance curve. However, using a Doppler-diversity receiver, we show that it is possible to exploit the Doppler-diversity and thus reduce the BER
2015 World Symposium on Computer Networks and Information Security (WSCNIS), 2015
This paper investigates reliable and secure transmissions over the Gaussian wiretap channel. A ph... more This paper investigates reliable and secure transmissions over the Gaussian wiretap channel. A physical layer coding scheme based on Low-Density-Parity-Check (LDPC) codes with granular Hybrid Automatic Repeat reQuest(HARQ) protocol is presented. Increasing the HARQ granularity aims at sending coded data at the minimum rate required for legitimate successful decoding. This minimizes the information leakage that may benefit to eavesdropping. It will be shown that the granularity increases the frame error rate of the eavesdropper. Since the secrecy level can be assessed through the bit error rate (BER) at the unintended receiver, intraframe and interframe error contamination is employed to convert the loss of only few packets into much higher BERs. After obtaining the BERs at the legitimate and illegitimate receivers the reliable and secret regions can be determined. It is observed that with granular HARQ and interframe error contamination, regions that are reliable and secure at the same time are expanded.
WCC 2000 - ICCT 2000. 2000 International Conference on Communication Technology Proceedings (Cat. No.00EX420), 2000
A modified version of the simple block code (SBC) presented by S. Fragicomo et al. (see Electroni... more A modified version of the simple block code (SBC) presented by S. Fragicomo et al. (see Electronics Letters, vol.34, no.10, p.953-4, 1998) is proposed to reduce the peak-to-average power ratio (PAPR) of multicarrier systems (such as orthogonal frequency division multiplexing). Combined with the sub-block processing technique (see Zhang, Y. et al., IEEE 49th Vehicular Technology Conference, vol.1, p.695-9, 1999), the
Proceedings of IEEE International Symposium on Information Theory
Transfer function expressions for recursive Ungerboeck TCM codes using QAM modulation over AWGN c... more Transfer function expressions for recursive Ungerboeck TCM codes using QAM modulation over AWGN channels are derived under the condition of uniformity: computer results are given for 4-state and 16-state encoders
Land mobile satellite communications at Ka-band (30/20 GHz) are attracting an increasing interest... more Land mobile satellite communications at Ka-band (30/20 GHz) are attracting an increasing interest among researchers because of the frequency band availability and the possibility of small earth station designs. However, communications at the Ka-band pose significant challenges in the system designs due to severe channel impairments. Because only very limited experimental data for mobile applications at Ka-band is available, this paper studies the channel characteristics based on experimental data at L-band (1.6/1.5 GHz) and the use of frequency scaling. The land mobile satellite communication channel at Ka-band is modelled as log-normal Rayleigh fading channel. The first and second-order statistics of the fading channel are studied. The performance of a coherent BPSK system over the fading channel at L-band and K-band is evaluated theoretically and validated by computer simulations. Conclusions on the communication channel characteristics and system performance at L-band and Ka-band...
... The results obtained with the two extended techniques are also given and compared with that o... more ... The results obtained with the two extended techniques are also given and compared with that of the sub-block-coding. ... Then the two extended techniques of sub-block-coding are introduced, and new results are presented. 11. OFDM AND PAPR ...
Distributed video coding is a research field which brings together error coding techniques along ... more Distributed video coding is a research field which brings together error coding techniques along with video compression methods. It is usually based on a SlepianWolf encoder which often involves turbo codes because of their strong error correction capabilities. Typically, the turbo encoder generates parity bits which are sent to refine the side information reconstructed at the decoder by interpolation of the already received neighboring key frames. In this paper we introduce a novel distributed video coding scheme with progressive decoding. The side information is updated progressively as long as the current frame is being decoded. The proposed architecture considers a chess-board structure for block grouping. A subset of blocks are first sent, decoded and then used to update the side information. Then, the remaining blocks are sent and decoded using the updated and more accurate side information. The implementation of the progressive coding shows an improvement up to 1.7 dB over th...
In this paper, a new optimal watermarking scheme based on lifting wavelet transform (LWT) and sin... more In this paper, a new optimal watermarking scheme based on lifting wavelet transform (LWT) and singular value decomposition (SVD) using multi-objective ant colony optimization (MOACO) is presented. The singular values of the binary water- mark are embedded in a detail subband of host image. To achieve the highest possible robustness without losing watermark transparency, multiple scaling factors (MSF) are used instead of a single scaling factor (SSF). Determining the optimal values of the mul- tiple scaling factors (MSF) is a dicult problem. However, to determine these values, a multi-objective ant colony-based optimization method is used. Experimental results show much improved performances in terms of transparency and robustness for the proposed method compared to other watermarking schemes. Furthermore, the proposed scheme does not suer from the problem of high probability of false positive detections of the watermarks.
In this paper we investigate multiuser detection techniques for coded narrowband signals in fadin... more In this paper we investigate multiuser detection techniques for coded narrowband signals in fading channels. In [1], Moher proposed a suboptimal multiuser detector and its performance is demonstrated for the AWGN channel. In this paper, this multiuser detector is modified for fading channels, such as the Rayleigh fading channel model. The fading channels described and simulated are flat narrowband channels. The receiver is assumed to be synchronous. I. Multiuser Channel Model A. Discrete Time Synchronous Model Multiuser transmission means that K users share one resource for transmission of data. The shared resource can be the spectrum, time, or power allocations. The common code multiplex technique CDMA is used where it makes sense to have a concrete example, for motivating the model equation and for giving an example how to calculate the crosscorrelations. The model itself can be used with all types of multiuser transmission and is not specific for CDMA. In a CDMA system, every use...
Distributed video coding is a video paradigm where most of the computational complexity can be tr... more Distributed video coding is a video paradigm where most of the computational complexity can be transfered from video encoders to the decoders. This allows for video sequences transmission involving inexpensive encoders and powerful central decoders. Unfortunately, due to typically numerous feedback requests and needed decoder run cycles, this often leads to unacceptably long decoding latencies. One approach to addressing the latency problem consists in estimating an initial number of parity bit chunks (INC) that are then sent at once to reduce the number of these decoders run cycles. The challenge is to properly estimate as accurately as possible the INC without neither underestimation nor overestimation. This paper proposes two INC estimation techniques based on the temporal correlation between successive Wyner-Ziv frames and on the correlation between the different bit-planes.
In 'Cassegrain v Gerard Cassegrain and Co Pty Limited' [2015] HCA 2 (Cassegrain), the Hig... more In 'Cassegrain v Gerard Cassegrain and Co Pty Limited' [2015] HCA 2 (Cassegrain), the High Court gave consideration to the fraud exception to indefeasibility of title under the Real Property Act 1900 (NSW) (RPA). In particular, the court found that a person's proprietary interest as a joint tenant in real property was not defeasible merely on account of a fraudulent act committed by a second joint tenant, to which the first joint tenant was not a party.
Abstract System performance of mobile wireless communications is limited by fast channel variatio... more Abstract System performance of mobile wireless communications is limited by fast channel variations, which are mostly due to the mobility of user terminals and scatterers. In order to obtain the optimal system performance, precise knowledge of the channel variations is ...
2000 Canadian Conference on Electrical and Computer Engineering. Conference Proceedings. Navigating to a New Era (Cat. No.00TH8492)
We present the results of a simulation of a communication system using QPSK modulation over a fre... more We present the results of a simulation of a communication system using QPSK modulation over a frequency non-selective, fast fading channel. The presence of fast fading leads to the presence of a bit error probability floor in the performance curve. However, using a Doppler-diversity receiver, we show that it is possible to exploit the Doppler-diversity and thus reduce the BER
2015 World Symposium on Computer Networks and Information Security (WSCNIS), 2015
This paper investigates reliable and secure transmissions over the Gaussian wiretap channel. A ph... more This paper investigates reliable and secure transmissions over the Gaussian wiretap channel. A physical layer coding scheme based on Low-Density-Parity-Check (LDPC) codes with granular Hybrid Automatic Repeat reQuest(HARQ) protocol is presented. Increasing the HARQ granularity aims at sending coded data at the minimum rate required for legitimate successful decoding. This minimizes the information leakage that may benefit to eavesdropping. It will be shown that the granularity increases the frame error rate of the eavesdropper. Since the secrecy level can be assessed through the bit error rate (BER) at the unintended receiver, intraframe and interframe error contamination is employed to convert the loss of only few packets into much higher BERs. After obtaining the BERs at the legitimate and illegitimate receivers the reliable and secret regions can be determined. It is observed that with granular HARQ and interframe error contamination, regions that are reliable and secure at the same time are expanded.
WCC 2000 - ICCT 2000. 2000 International Conference on Communication Technology Proceedings (Cat. No.00EX420), 2000
A modified version of the simple block code (SBC) presented by S. Fragicomo et al. (see Electroni... more A modified version of the simple block code (SBC) presented by S. Fragicomo et al. (see Electronics Letters, vol.34, no.10, p.953-4, 1998) is proposed to reduce the peak-to-average power ratio (PAPR) of multicarrier systems (such as orthogonal frequency division multiplexing). Combined with the sub-block processing technique (see Zhang, Y. et al., IEEE 49th Vehicular Technology Conference, vol.1, p.695-9, 1999), the
Proceedings of IEEE International Symposium on Information Theory
Transfer function expressions for recursive Ungerboeck TCM codes using QAM modulation over AWGN c... more Transfer function expressions for recursive Ungerboeck TCM codes using QAM modulation over AWGN channels are derived under the condition of uniformity: computer results are given for 4-state and 16-state encoders
Land mobile satellite communications at Ka-band (30/20 GHz) are attracting an increasing interest... more Land mobile satellite communications at Ka-band (30/20 GHz) are attracting an increasing interest among researchers because of the frequency band availability and the possibility of small earth station designs. However, communications at the Ka-band pose significant challenges in the system designs due to severe channel impairments. Because only very limited experimental data for mobile applications at Ka-band is available, this paper studies the channel characteristics based on experimental data at L-band (1.6/1.5 GHz) and the use of frequency scaling. The land mobile satellite communication channel at Ka-band is modelled as log-normal Rayleigh fading channel. The first and second-order statistics of the fading channel are studied. The performance of a coherent BPSK system over the fading channel at L-band and K-band is evaluated theoretically and validated by computer simulations. Conclusions on the communication channel characteristics and system performance at L-band and Ka-band...
... The results obtained with the two extended techniques are also given and compared with that o... more ... The results obtained with the two extended techniques are also given and compared with that of the sub-block-coding. ... Then the two extended techniques of sub-block-coding are introduced, and new results are presented. 11. OFDM AND PAPR ...
Distributed video coding is a research field which brings together error coding techniques along ... more Distributed video coding is a research field which brings together error coding techniques along with video compression methods. It is usually based on a SlepianWolf encoder which often involves turbo codes because of their strong error correction capabilities. Typically, the turbo encoder generates parity bits which are sent to refine the side information reconstructed at the decoder by interpolation of the already received neighboring key frames. In this paper we introduce a novel distributed video coding scheme with progressive decoding. The side information is updated progressively as long as the current frame is being decoded. The proposed architecture considers a chess-board structure for block grouping. A subset of blocks are first sent, decoded and then used to update the side information. Then, the remaining blocks are sent and decoded using the updated and more accurate side information. The implementation of the progressive coding shows an improvement up to 1.7 dB over th...
In this paper, a new optimal watermarking scheme based on lifting wavelet transform (LWT) and sin... more In this paper, a new optimal watermarking scheme based on lifting wavelet transform (LWT) and singular value decomposition (SVD) using multi-objective ant colony optimization (MOACO) is presented. The singular values of the binary water- mark are embedded in a detail subband of host image. To achieve the highest possible robustness without losing watermark transparency, multiple scaling factors (MSF) are used instead of a single scaling factor (SSF). Determining the optimal values of the mul- tiple scaling factors (MSF) is a dicult problem. However, to determine these values, a multi-objective ant colony-based optimization method is used. Experimental results show much improved performances in terms of transparency and robustness for the proposed method compared to other watermarking schemes. Furthermore, the proposed scheme does not suer from the problem of high probability of false positive detections of the watermarks.
In this paper we investigate multiuser detection techniques for coded narrowband signals in fadin... more In this paper we investigate multiuser detection techniques for coded narrowband signals in fading channels. In [1], Moher proposed a suboptimal multiuser detector and its performance is demonstrated for the AWGN channel. In this paper, this multiuser detector is modified for fading channels, such as the Rayleigh fading channel model. The fading channels described and simulated are flat narrowband channels. The receiver is assumed to be synchronous. I. Multiuser Channel Model A. Discrete Time Synchronous Model Multiuser transmission means that K users share one resource for transmission of data. The shared resource can be the spectrum, time, or power allocations. The common code multiplex technique CDMA is used where it makes sense to have a concrete example, for motivating the model equation and for giving an example how to calculate the crosscorrelations. The model itself can be used with all types of multiuser transmission and is not specific for CDMA. In a CDMA system, every use...
Distributed video coding is a video paradigm where most of the computational complexity can be tr... more Distributed video coding is a video paradigm where most of the computational complexity can be transfered from video encoders to the decoders. This allows for video sequences transmission involving inexpensive encoders and powerful central decoders. Unfortunately, due to typically numerous feedback requests and needed decoder run cycles, this often leads to unacceptably long decoding latencies. One approach to addressing the latency problem consists in estimating an initial number of parity bit chunks (INC) that are then sent at once to reduce the number of these decoders run cycles. The challenge is to properly estimate as accurately as possible the INC without neither underestimation nor overestimation. This paper proposes two INC estimation techniques based on the temporal correlation between successive Wyner-Ziv frames and on the correlation between the different bit-planes.
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