Power control techniques are becoming increasingly important for a two-tier network, where a central macrocell is underlaid with femtocells, since cross-tier and co-tier interference severely limits network performance. In this paper, we propose a distributed power control scheme for the uplink transmission of spectrum-sharing femtocell networks based on fictitious game. Each user announces a p...

Wireless sensor networks (WSNs) have been identified as a promising technology for supporting assistive environments. This article introduces PROTECT, a system that employs autonomous software objects referred to as mobile agents (MAs) able of locating and informing visually impaired persons for potential risks. PROTECT utilizes a 3-tier architecture where the first tier comprises a base statio...

Modern day cellular networks are driven by the need to provide ubiquitous connectivity with very high spectral efficiency to both indoor and outdoor users, hence the need to deploy small cells over conventional macrocells in a Heterogeneous Network (Hetnet) deployment. To alleviate the resulting inter-cell and cross-tier interference, effective intercell interference coordination (ICIC) schemes...

<p class="Abstract"><span lang="EN-GB">The objective of this study is to develop a car assembly sequence that mutually agreed between manufacturers and Tier-1 module suppliers such overall modular supply chain efficiency improved. In the literature so far, only constraints have been considered in sequencing problem. However, an from manufacturer imposes on since their activities are...

Nowadays, Long Term Evolution (LTE) networks are becoming more and more popular. Femtocells have a strong potential for increasing the efficiency, cell coverage and network capacity of next-generation mobile networks. LTE femtocells represent a very promising answer to the ever growing bandwidth demand of mobile application. This system can be easily deployed without requiring a centralized pla...

The mainstream view holds that over time buyer–supplier relationships evolve through a number of phases. As a consequence, supplier development as a buyer–supplier relationship management practice should also be adapted to the life-cycle phase. Supplier development activities matching the buyer– supplier relationship life-cycle phase will lead to more favorable performance improvements. However...

Impact of mobility will be increasingly important in future generation wireless services and the related challenges need to addressed. Sojourn time, time duration that a mobile user stays within cell, is mobility-aware parameter can significantly impact performance users it also exploited improve resource allocation management methods network. In this paper, we derive distribution mean sojourn ...

It is usually acknowledged that firms benefit from a large customer base when consumers face costs of switching the supplier. Klemperer (1995) points out that this may not be true if an increase in the size of a firm’s customer base induces fiercer price competition, possibly making the firm worse off. This paper shows that such an outcome is not a mere theoretical possibility but may be empiri...

For organizations to remain competitive, they must now adapt sustainability requirements, which have become performance criteria for supplier selection most original Equipment manufacturers (OEMs). In this sense, environmental is included as a competitive priority throughout the supply chain. Therefore, study aims verify, through two case studies, priorities of first-tier suppliers from automot...