In this paper, we study the resource allocation algorithm design for multiple-input single-output (MISO) multicarrier non-orthogonal multiple access (MC-NOMA) systems, in which a full-duplex base station serves multiple half-duplex uplink and downlink users on the same subcarrier simultaneously. The resource allocation is optimized for maximization of the weighted system throughput while the in...

This paper presents a version of the Simultaneous Perturbation Stochastic Approximation (SPSA) algorithm for optimizing non-separable functions over discrete sets under given constraints. The primary motivation for discrete SPSA is to solve a class of resource allocation problems wherein the goal is to distribute a finite number of discrete resources to finitely many users in such a way as to o...

The WiMAX technology offers a versatile mobile services platform, which enables operators to provide differential Quality of Service (QoS) for fulfilling subscribers’ various requirements. WiMAX operators need to allocate enough resources to make all subscribers satisfied to avoid “user churn” that subscribers will unsubscribe services due to dissatisfaction with allocated resources. This resou...

extensive research has been devoted to resource constrained project scheduling problem. however, little attention has been paid to problems where a certain time penalty must be incurred if activity preemption is allowed. in this paper, we consider the project scheduling problem of minimizing the total cost subject to resource constraints, earliness-tardiness penalties and preemption penalties, ...

In this paper, joint physical-MAC layer optimization in OFDM systems using adaptive modulation and subcarrier allocation is investigated based on utility theory. Since utility qualifies the level of users’ satisfaction derived from the radio resources they occupy, it is ideal for a network optimization metric. We formulate cross-layer optimization problem as one that maximizes the sum of the ut...

in this paper, downlink resource allocation for a sparse code multiple access (scma) based heterogeneous  cellular networks (hcn) is investigated. the main aim of this paper is to obtain joint power allocation and codebook assignment to achieve the least total system transmit power. in this regard, the proposed objective function is formulated as total transmit power subject to users minimum ra...

In this paper, the resource allocation problem is considered for energy efficient spectrum access in a wireless cognitive radio ad hoc network, where each node is equipped with cognitive radio and has limited battery energy. The network is an OFDMA system operating on time slots. In each slot, the users with new traffic demand will sense the entire spectrum and locate the available subcarrier s...

Due to the scarcity of wireless resources, efficient resource allocation is essential to the success of cellular systems. With the proliferation of bandwidth-hungry multimedia applications with diverse traffic characteristics and quality of service requirements, the resource management is becoming particularly challenging. In this thesis, we address some of the key link-layer resource allocatio...