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Integrated sensing and communication (ISAC) and space-air-ground integrated networks (SAGIN) have been considered as key technologies of 6G. The challenge of achieving ISAC in uplink massive access scenarios within the SAGIN has become a major research ...

This work studies the issue of inter-cell interference that arises when drones are integrated into cellular networks. Using the Vienna 5G System Level Simulator, augmented with a drone-specific 3GPP path loss model, we demonstrate that uplink ...

IEEE 802.11ah (Wi-Fi HaLow) operates in license-exempt ISM bands below 1 GHz and provides longer-range connectivity. The main advantage of the IEEE 802.11ah is it provides long range connection with low power consumption. RAW (Restricted Access Window) ...

Wireless systems in the fifth generation (5G) are expected to satisfy high capacity and latency demands. Non-Orthogonal Multiple Access (NOMA) is a significant emerging paradigm for 5G to fulfil diverse needs for low latency, enhanced fairness, improved ...

The exponential growth of the wireless data services of the upcoming cellular networks exhibit challenges for guaranteeing quality of services (QoS), fairness, and desirable throughput among mobile users. Managing the resources in an advanced long term ...

The multi-in and multi-out (MIMO) wireless communication with robust performance often evinces the considerable bit error rate due to the imbalance signal against to noise, contention due to load, and poor bandwidth share. Hence, it is obvious to define ...

Received total wideband power (RTWP) data is a measurement of the wanted and unwanted power levels received by a 3G radio base station (RBS) and is a concise indicator of uplink network performance. Using a statistical physics approach, we aim to detect ...

This study addresses spectral efficiencies (SEs) in a massive multiple‐input multiple‐output cellular network with pilot contamination. Both uplink and downlink SEs are investigated with practical channel state information. A downlink precoder minimising ...

The asymmetry traffic between downlink (DL) and uplink (UL) in massive machine‐type communication (mMTC) systems is so prominent that it makes the traditionally fixed frame protocols insufficient to handle. Meanwhile, the dynamic time‐division duplexing (...

In this paper, a novel blind carrier frequency offset CFO estimation is proposed on the basis of the linearly constrained optimization for the uplink transmission of space-time block-coded multicarrier code division multiple access systems. First, the ...

The continuous increase of mobile data traffic has created a substantial demand for high data rate transmission over mobile networks. However, mobile devices are provided with small batteries that can be drained quickly by high data rate transmission. ...

The operation of wireless cellular networks can be efficiently supported by secondary small cells that are deployed at traffic hotspots within the coverage area of the primary macro cells. To this end, we examine the conditions under which the secondary ...

Different from previous works, in this paper, we adopt D2D communication as a routing extension to traditional cellular uplinks thus enabling a two-hop route between a user and the serving BS via a D2D relay. Specifically, a BS establishes a cellular ...

Assume that a multi-user multiple-input multiple-output (MIMO) system is designed from scratch to uniformly cover a given area with maximal energy efficiency (EE). What are the optimal number of antennas, active users, and transmit power? The aim of this ...

In this paper, we present and evaluate the performance of a resource allocation algorithm to enhance the Quality of Service (QoS) provision and energy efficiency of uplink Long Term Evolution (LTE) systems. The proposed algorithm considers the main ...

The LTE-based femtocell network is a promising solution adopted today to cope with the huge cellular traffic requirements. In particular, the Uplink communication becomes an attractive issue especially with the emerging of the interactive services and ...

Recent studies have shown that in LTE Uplink, the handshake procedure consisting of a scheduling request message from the User Equipment and a scheduling grant from the eNB required twice a communication over the air interface and caused notable delay. ...

The performance of high‐speed railway wireless communication systems is studied in the presence of co‐channel interference and imperfect channel estimation in the uplink. The authors derive exact closed‐form expressions for the outage probability and ...

This work considers a code division multiple access (CDMA)‐based femtocell system where a fixed set of subscribed users communicate simultaneously to a femtocell access point (FAP) in an asynchronous fashion during the uplink. The main goal of this paper ...

Wireless network traffic is dominated by video and requires new ways to maximize the user experience and optimize networks to prevent saturation. The exploding number of subscribers in cellular networks has exponentially increased the volume and variety ...