I. EXTENDED ABSTRACT OFDMA is considered to be a suitable candidate for future radio network systems where high data rates are required. In a multicarrier scheme like OFDMA, the overall channel can be divided in several resources. Having channel knowledge at the transmitter side in a multiuser system, the resources can be allocated to the different users in an optimal manner in terms of a certa...

This article investigates the security and reliability analysis for a novel satellite-terrestrial network. Specifically, satellite attempts to transmit confidential information ground user via support of multiple relay nodes in presence an eavesdropper that tries overhear information. A friendly jammer is deployed improve secure transmission between relays. Furthermore, satellite-to-relay gener...

An edge-cancellation-aided iterative detection and decoding (EC-IDD) algorithm is proposed for polar-coded sparse code multiple access (SCMA), which jointly performs Gaussian-approximated message passing (GA-MP) of SCMA supported by the soft list (SLD) polar codes. A reduced-edge factor graph formulated in each consecutive iteration with aid cyclic redundancy check (CRC) EC. Based on simplified...

− In this paper, we investigate an improved upper bound on the bit error probability of turbo codes for the maximum likelihood (ML) decoding with imperfect channel state information (CSI) in a fully interleaved Rayleigh fading channel. The upper bound is based on recently introduced Viterbi & Viterbi bound and is also compared with iterative decoding using the Log-MAP algorithm. It is shown tha...