A showcase of ÉTS researchers’ publications and other contributions

Commutation Code Index DCSK modulation technique for high-data-rate communication systems


Downloads per month over past year

Herceg, Marijan, Vranješ, Denis, Kaddoum, Georges et Soujeri, Ebrahim. 2018. « Commutation Code Index DCSK modulation technique for high-data-rate communication systems ». IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 65, nº 12. pp. 1954-1958.
Compte des citations dans Scopus : 24.

[thumbnail of Kaddoum G 2018 16519 Commutation Code Index DCSK.pdf]
Kaddoum G 2018 16519 Commutation Code Index DCSK.pdf - Accepted Version
Use licence: All rights reserved to copyright holder.

Download (1MB) | Preview


In this work, a novel non-coherent modulation system named Commutation Code Index Differential Chaos Shift Keying (CCI-DCSK) is presented. In the proposed scheme, the benefits of index modulation (IM) are exploited so that the system energy and spectral efficiencies are improved. We are putting forward a CCI-DCSK scheme in which the reference sequence along with its corresponding data bearing orthogonal version are sent within the same time slot to enhance spectral efficiency. Specifically, at the transmitter p additional bits are mapped into the index of the repetition commutation which is performed on the reference signal for the sake of forming its orthogonal version. Furthermore, the modulated bit is spread by the corresponding commutated replica of the reference signal. The reference and orthogonal data bearing signals are then summed within the same time slot prior to transmission. At the receiver, the received signal is first correlated with all possible combinations of the commutated replicas in order to find the index of the correlator output with the maximum magnitude. Subsequently, the maximizing index is then used to estimate the mapped bits, while the output of the corresponding correlator is used to despread the modulated bit via a zero-threshold comparator. To complete the study, analytical expressions for the bit error rate (BER) are derived for both additive white Gaussian noise (AWGN) and multipath Rayleigh fading channels. Finally, performance results of the proposed CCI-DCSK scheme is compared with the state-of-the-art IM-based non-coherent chaotic modulations and is found to be superior and competitive.

Item Type: Peer reviewed article published in a journal
Kaddoum, Georges
Affiliation: Génie électrique
Date Deposited: 27 Mar 2018 16:04
Last Modified: 22 Jan 2020 19:58

Actions (login required)

View Item View Item