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An Aggressive Cuckoo Search Algorithm for Optimum Power Allocation in a CDMA-Based Cellular Network.
Publication Type: Academic Journal
Source(s): Scientific World Journal. 8/30/2022, p1-30. 30p.
Abstract: This paper proposes an aggressive cuckoo search algorithm for optimum power allocation in a CDMA-based cellular network. To make the cuckoo search algorithm aggressive, adaptive parameters are used to vary the step size and probability of discovery. Fu...
Cell-Free Massive MIMO With Multi-Antenna Users Over Weichselberger Rician Channels.
Publication Type: Academic Journal
Source(s): IEEE Transactions on Vehicular Technology. Nov2022, Vol. 71 Issue 11, p12368-12373. 6p.
Abstract: We consider a cell-free massive multiple-input multiple-output (MIMO) system with multi-antenna access points and user equipments (UEs) over Weichselberger Rician fading channels with random phase-shifts. More specifically, we investigate the uplink sp...
Performance Analysis and Optimization for RIS-Assisted Multi-User Massive MIMO Systems With Imperfect Hardware.
Publication Type: Academic Journal
Source(s): IEEE Transactions on Vehicular Technology. Nov2022, Vol. 71 Issue 11, p11786-11802. 17p.
Abstract: The paper studies a reconfigurable intelligent surface (RIS)-assisted multi-user uplink massive multiple-input multiple-output (MIMO) system with imperfect hardware. At the RIS, the paper considers phase noise, while at the base station, the paper take...
FD Cell-Free Massive MIMO Systems With Downlink Pilots: Analysis and Optimization.
Publication Type: Academic Journal
Source(s): IEEE Transactions on Communications. Nov2022, Vol. 70 Issue 11, p7591-7608. 18p.
Abstract: We consider a full duplex (FD) massive multiple-input multiple-output (mMIMO) cell-free (CF) system, where a large number of multi-antenna FD access points (APs) jointly serve multiple FD user equipments (UEs). The APs transmit precoded downlink pilots...
Spatially Correlated Reconfigurable Intelligent Surfaces-Aided Cell-Free Massive MIMO Systems.
Publication Type: Academic Journal
Source(s): IEEE Transactions on Vehicular Technology. Aug2022, Vol. 71 Issue 8, p9073-9077. 5p.
Abstract: Reconfigurable intelligent surfaces (RISs) and cell-free (CF) massive multiple-input multiple-output (MIMO) are two promising technologies for realizing beyond-fifth generation (5G) networks. In this paper, we study the uplink spectral efficiency (SE) ...
On the Capacity-Achieving Input of Channels With Phase Quantization.
Publication Type: Academic Journal
Source(s): IEEE Transactions on Information Theory. Sep2022, Vol. 68 Issue 9, p5866-5888. 23p.
Abstract: Several information-theoretic studies on channels with output quantization have identified the capacity-achieving input distributions for different fading channels with 1-bit in-phase and quadrature (I/Q) output quantization. However, an exact characte...
HP-DF SSK Method for UAVs Communication in Cooperative Multi-Hop Rician Networks.
Publication Type: Academic Journal
Source(s): IEEE Transactions on Vehicular Technology. Aug2022, Vol. 71 Issue 8, p8474-8486. 13p.
Abstract: This paper presents techniques that are expected to improve the bit error rate (BER) performance of Unmanned Aerial Vehicles (UAVs) communication systems. The decode-and-forward (DF)-based cooperative multi-hop Rician network using space shift keying (...
Performance Analysis of RIS Assisted NOMA Networks over Rician Fading Channels.
Publication Type: Academic Journal
Source(s): CMES-Computer Modeling in Engineering & Sciences. 2023, Vol. 135 Issue 3, p2531-2555. 25p.
Abstract: In this paper, we consider a downlink non-orthogonal multiple access (NOMA) network assisted by two reconfigurable intelligent surfaces (RISs) over Rician fading channels, in which each user communicates with the base station by the virtue of a RIS to ...
Power Scaling Law Analysis and Phase Shift Optimization of RIS-Aided Massive MIMO Systems With Statistical CSI.
Publication Type: Academic Journal
Source(s): IEEE Transactions on Communications. May2022, Vol. 70 Issue 5, p3558-3574. 17p.
Abstract: This paper considers an uplink reconfigurable intelligent surface (RIS)-aided massive multiple-input multiple-output (MIMO) system, where the phase shifts of the RIS are designed relying on statistical channel state information (CSI). Considering the c...
Analysis of NOMA based UAV assisted short-packet communication system and blocklength minimization for IoT applications.
Publication Type: Academic Journal
Source(s): Wireless Networks (10220038). Aug2022, Vol. 28 Issue 6, p2695-2712. 18p.
Abstract: Recently, academia and industry have shown keen interest in achieving ultra-reliable and low latency communication (URLLC) through short-packet communication to meet the strict demands concerning high reliability and latency for 5G and beyond applicati...