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Volume 12, Issue 11July 2018
Reflects downloads up to 20 Nov 2024Bibliometrics
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research-article
Low‐complexity multiple‐signal joint decoding for overlapped x domain multiplexing signalling

By multiplexing waveform mapped with shifting and weighted symbols, overlapped x domain multiplexing (OVXDM) encoding scheme can obtain high spectral efficiency under a low signal‐to‐noise ratio. Though the maximum likelihood sequence detection decoders ...

research-article
STTC design for vehicular communication systems employing fixed‐gain AF PLNC over cascaded fading channels

In this study, the authors combine physical layer network coding (PLNC) and space‐time trellis coding (STTC) techniques to improve the error performance of vehicle‐to‐vehicle (V2V) communication systems where all fading channels are assumed to undergo ...

research-article
Equivalent convex optimisation approach for green cognitive radio‐based cooperative networks

Ensuring total rate maximisation whilst keeping Greenhouse gas emission (GHGE) at a minimum in green cooperative cognitive radio networks is key to achieving maximum network quality. This study employs the multi‐objective lexicographic algorithm to a ...

research-article
New measurement matrix for compressive sensing in cognitive radio networks

Cognitive radio (CR) is a promising solution for an efficient usage of both wideband and narrowband spectrum. Compressive sensing (CS) paradigm is one of the methods that can assist CR to sense the wideband sparse spectrum using a small number of ...

research-article
Joint multicast beamforming and user scheduling in large‐scale antenna systems

The joint multicast beamforming and user scheduling problem is studied, with the objective of minimising total transmitting power across multiple channels by jointly assigning each user to appropriate channel and designing multicast beamformer for each ...

research-article
Approximate capacity of symmetric two‐pair one‐way relay channel with overhearing links

The capacity region of the symmetric two‐pair one‐way relay channel with overhearing links (OLs) is studied. First, the problem is explored in the linear shift deterministic channel model and the capacity region of the deterministic channel model is ...

research-article
Design and performance analysis of generalised carrier index M‐ary differential chaos shift keying modulation

In this study, two generalised carrier index M‐ary differential chaos shift keying (CI‐MDCSK) schemes are proposed, which combine index modulation with multicarrier M‐ary DCSK (MC‐MDCSK). At the transmitter, two different index selectors based on two ...

research-article
Preference‐based unified criterion in virtual MIMO systems

Virtual multiple‐input multiple‐output (V‐MIMO) is an advanced technology in uplink systems, and a well‐designed user pairing and resource allocation scheme in V‐MIMO systems can effectively exploit multi‐user diversity to yield a significant performance ...

research-article
Open Access
Exact and asymptotic ergodic capacity analysis of the hybrid satellite–terrestrial cooperative system over generalised fading channels

In this study, the authors analyse the ergodic capacity of the downlink channel in a hybrid satellite–terrestrial cooperative system. The satellite link experiences shadowed Rician fading and the terrestrial link follows Rayleigh fading. Using the moment ...

research-article
Optimisation design of systematic LT codes over AWGN multiple access channel

Systematic Luby transform (SLT) codes over the additive white Gaussian noise (AWGN) multiple access channels (MACs) are analysed in this study. The authors introduce a novel optimisation model extending from the point‐to‐point AWGN channels to design the ...

research-article
Method to reduce the signal‐to‐noise ratio required for modulation recognition based on logarithmic properties

Here, the authors present a novel, simple, and effective way of improving additive white Gaussian noise resistance and reducing the signal‐to‐noise ratio (SNR) required for modulation recognition. Working on the theoretical basis that the ratio of two ...

research-article
Pilot power allocation for maximising the sum rate in massive MIMO systems

In this study, the authors investigate the issue of pilot power allocation in multi‐cell multi‐user massive multiple‐inputmultiple‐output (MIMO) systems to maximize the sum rate. In contrast to conventional scheme that assigns equal pilot power for all ...

research-article
Knowledge‐aided iterative detection and decoding for multiuser multiple‐antenna systems

In this work, the authors assess the performance and latency of a receiver design for multiuser multiple‐antenna systems using low‐density parity‐check (LDPC) codes with iterative detection and decoding (IDD). The proposed knowledge‐aided IDD (KA‐IDD) ...

research-article
Alternative direction for 3D orthogonal frequency division multiplexing massive MIMO FDD channel estimation and feedback

In this study, downlink channel estimation of three‐dimensional massive multiple‐input multiple‐output (3D‐MIMO) system operating in the frequency division duplexing (FDD) mode is considered. Inspired by the channel sparsity property, this study proposes ...

research-article
Physical layer security in cognitive radio network with energy harvesting relay and jamming in the presence of direct link

In this paper, we examine the physical (PHY) layer security in terms of secrecy outage of an energy harvesting (EH) relay based underlay cognitive radio network (CRN) in the presence of an eavesdropper. A dual hop communication network consisting of an ...

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