Robust Radio Resource Allocation in Lte Networks by Channel and Relay Assignment
نویسندگان
چکیده
The radio resource allocation in wireless communication is analysed in this paper. Pair of users communicates each other through multiple two way relays in orthogonal frequency division multiplexing transmission systems. The total throughput is maximized by relay selection, channel and relay assignment, subcarrier pairing and subcarrier allocation by prim’s algorithm. The graphical theory approach has used to solve the problem optimally in polynomial time. The evaluation of the network total throughput with respect to transmit power node and the number of relay nodes are analysed through simulation. In this work, the improvement in sum rate with optimum carrier assignment using proposed algorithm is demonstrated against the classical work.
منابع مشابه
An Effective Resource Allocation Scheme in Relay Enhanced LTE-A
Long Term Evolution-Advanced (LTE-A) is a mobile communication standard of high-speed data for mobile phones and data terminals. LTE-A inherits all basic technologies of LTE such as Orthogonal Frequency Division multiplexing access, Multiple Input Multiple Output, Flexible bandwidth and Provides new features to improve the capacity and Performance. Some of the new features supports by LTE-A are...
متن کاملA New Fairness Index and Novel Approach for QoS-Aware Resource Allocation in LTE Networks Based on Utility Functions
Resource allocation techniques have recently appeared as a widely recognized feature in LTE networks. Most of existing approaches in resource allocation focus on maximizing network’s utility functions. The great potential of utility function in improving resource allocation and enhancing fairness and mean opinion score (MOS) indexes has attracted large efforts over the last few years. In this p...
متن کاملRelay Selection and Resource Allocation in LTE-Advanced Cognitive Relay Networks
In this work, we consider the problem of joint relay selection and resource allocation in Long Term Evolution-Advanced (LTE-A) systems which provides both cognitive radio and relaying scheme capabilities. We assume that the total network is deployed in an overlay scheme where the primary user communicates via a relay assisted LTE-A network, some of the secondary users play the relaying role and...
متن کاملRadio Resource Management and Interference Analysis for Downlink OFDMA in LTE
In 4G technology especially LTE relaying and orthogonal frequency division multiple access (OFDMA) are widely accepted techniques in downlink. To obtain ubiquitous coverage with high data rate to user terminals even in difficult channel conditions (e.g. cell edge) a centralized RRM algorithm has been proposed for cellular fixed relay networks in downlink OFDMA. The
متن کاملRobust Channel Assignment for Link-level Resource Provisioning in Multi-Radio Multi-Channel Wireless Networks
In this paper, we investigate the problem of link-level resource provisioning in multi-radio multi-channel (MRMC) wireless networks. A robust channel assignment algorithm is proposed that explicitly takes into consideration link-level demands. Our solution approach utilizes the dual decomposition[11] and Gibbs sampler techniques, which effectively incorporate the channel allocation (combinatori...
متن کامل