Energy efficient communications in cognitive radio (CR) networks has been of great interest. In order to address the power consumption problem and to maximise the energy efficiency (EE) in MIMO-OFDM underlay CR systems, power allocation (PA) and antenna ...

In this study, the authors investigate outage performance of orthogonal space‐time block coding (OSTBC) in dual‐hop multiple‐input multiple‐output full‐duplex (FD) amplify‐and‐forward relay networks over flat Nakagami‐m fading environments. In the network,...

Orthogonal frequency division multiplexing (OFDM) is regarded as a popular technique. Moreover, OFDM combined with multiple-input multiple-output systems (MIMO)has drawn many interests. However, OFDM-MIMO systems with various modulations have not been ...

M-MIMO (Massive Multi-Input Multi-Output) is considered as a novel technology for 5G(the fifth generation of wireless communication system). On the one hand, due to the limited number of Radio Frequency(RF) chains, the number of antennas can't be ...

In this paper, we examine the impact of antenna correlation on transmit antenna selection with receive maximal ratio combining TAS/MRC in multiple-input multiple-output multiuser underlay cognitive radio network MIMO-MCN over a Nakagami-m fading ...

This paper focuses on the layered relay-and-antenna selection LRAS for achievable sum-rate ASR maximization while considering the impacts of residual self-interference due to channel estimation errors in multiple-input multiple-output two-way amplify-...

Examining the effect of imperfect transmit antenna selection TAS caused by the feedback link errors on the performance of hybrid TAS/orthogonal space-time block coding OSTBC with single receive antenna selection i.e., joint transmit and receive antenna ...

A new approach for multiantenna broadcast channels in cellular networks based on multiuser diversity concept is introduced. The technique called opportunistic interference management achieves dirty paper coding capacity asymptotically with minimum ...

In this study, the authors consider the application of a system architecture called cognitive radio (CR) with fibre‐connected distributed antennas in IEEE 802.22 wireless regional area networks (WRANs) as it could bring the benefits of much shorter ...

This paper address the energy conservation issues in wireless downlink of mobile networks with distributed antenna transmission. From the basic information theory for MIMO channels, we derived a simple energy efficiency defined as number of bits per ...

In this paper, a threshold bounded antenna selection scheduler (TBS) and a computational complexity bounded antenna selection scheduler (CCBS) are proposed to reduce computational complexity in multiple input multiple output (MIMO) uplink. In contrast ...

We propose the concept of Phase-Only Forward (PF) relays for cooperative communication involving constant envelope modulations. The technique enables the relaying nodes to maintain constant envelope signaling without the need to perform decoding and ...

To reduce the cost and complexity of receiver without losing much diversity gain, we propose an antenna selection scheme for MIMO systems employing non-constant envelope mapping. By detection of the received signal and a simplified process without any ...

For a multiple-input multiple-output (MIMO) system with more antennas at the receiver than the transmitter, selecting the same number of receiver antennas as the number of transmit antennas captures most of the advantages of MIMO capacity performance ...

In receive antenna selection (AS), only signals from a subset of the antennas are processed at any time by the limited number of radio frequency (RF) chains available at the receiver. Hence, the transmitter needs to send pilots multiple times to enable ...

This paper considers a joint antenna selection method in amplify-and-forward (AF) relay networks where the source, relay and destination terminals are all equipped with multiple antennas. The fact that the system's full diversity can be maintained by ...

Hardware constraints, which motivate receive antenna selection, also require that various antenna elements at the receiver be sounded sequentially to obtain estimates required for selecting the 'best' antenna and for coherently demodulating data ...

We present a modification of conventional transmit antenna selection schemes for OFDM systems by combining bulk and per-tone selection. We analyse the diversity and coding gains of the proposed approach with respect to symbol error and outage ...

This letter presents a computationally efficient joint transmit and receive antenna selection (EJTRAS) algorithm based on a modification of the selection criterion in [1]. We show that the modification allows us to reduce the algorithm's computational ...

In this paper, a novel joint antenna selection and power allocation scheme using convex optimization is proposed for CoMP systems. The maximum total rate of users is obtained subjected to the power of each BSs and the number of selected antennas ...