Demand-driven spectrum allocation can drastically improve performance for WiFi access points struggling under increasing user demands. While their frequency agility makes cognitive radios ideal for this challenge, performing adaptive spectrum allocation is a complex and difficult process. In this work, we propose FLEX, an efficient spectrum allocation architecture that efficiently adapts to dyn...

This paper proposes low complexity resource allocation in frequency domain non-orthogonal multiple access where many devices with a base station. The number of the is assumed to be more than that for network capacity enhancement, which demanded massive machine type communications (mMTC). two types techniques, all are based on MIN-MAX approach. One them seeks nicer only channel gains. other tech...

With the increasing demand for interactive services, it is important to investigate joint uplink/downlink resource allocation scheme in wireless networks, because the performance of the interactive service is determined by uplink and downlink jointly. In this paper, we propose a joint uplink/downlink resource allocation (RA) scheme in wireless orthogonal frequency division multiple access (OFDM...

Consider a channel allocation problem over a frequency-selective channel. There are K channels (frequency bands) and N users such that K = bN for some positive integer b. We want to allocate b channels (or resource blocks) to each user. Due to the nature of the frequency-selective channel, each user considers some channels to be better than others. Allocating each user only good channels will r...

Cognitive radio network (CRN) is growing worldwide that leads such networks area unit tormented by the challenges of efficient spectrum/resource allocation also as lack of spectrum. Economical spectrum allocation technique becomes new analysis problem in use of CRN. A significant challenge to the current new technology is the way to build honest assignment of accessible spectrum to unaccredited...

In this article, we propose two levels of resource allocation method in a converged scenario for Macro and Femtocells LTE system. We use a Soft Frequency Reuse for guaranteeing the Quality of Service (QoS) for different Service Data Flows (SDFs) in the converged wireless networks. The first level of our method includes the use of bandwidth allocation between macro and femtocells and admission c...

Although each application has its own quality of service (QoS) requirements, the resource allocation for multiclass services has not been studied adequately in multiuser orthogonal frequency division multiplexing (OFDM) systems. In this paper, a total transmit power minimization problem for downlink transmission is examined while satisfying multiclass services consisting of different data rates...