Hybrid Hughes‐Hartogs power allocation algorithms for OFDMA systems
نویسندگان
چکیده
منابع مشابه
Performance Evaluation of Bit Loading, Subcarrier Allocation, and Power Control Algorithms for Cellular OFDMA Systems
We consider the problem of radio resource allocation for QoS support in the downlink of a cellular OFDMA system. The major impairments present are co-channel interference (CCI) and frequency selective fading. The allocation problem involves assignment of base stations, subcarriers and bits, as well as power control, for multiple users. We evaluate the performance of a three-stage, low-complexit...
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The allocation of subcarriers and power to users is an important issue for exploiting the advantages of OFDMA systems. The main objective of the traditional OFDMA uplink resource allocation focuses on two aspects: one is to maximize the transmission rate of each user, the other is to minimize power. In this paper, we proposed the joint subcarrier and power allocation in the uplink of an OFDMA s...
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An optimal subcarrier allocation algorithm is proposed for orthogonal frequency division multiple access systems over Rayleigh fading channels with channel state information feedback. The transmitted orthogonal frequency division multiple access frame is divided into groups called subchannels according to the detected number of users at the base station. The pilots are reduced for the stable su...
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Adaptive Radio Resource Allocation is essential for guaranteeing high bandwidth and power utilization as well as satisfying heterogeneous Quality-of-Service requests regarding next generation broadband multicarrier wireless access networks like LTE and Mobile WiMAX. A downlink OFDMA single-cell scenario is considered where heterogeneous Constant-Bit-Rate and Best-Effort QoS profiles coexist and...
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In this contribution, we propose a power and subcarrier allocation scheme for uplink orthogonal frequency division multiple access (OFDMA) based on the capacity difference between different users. The scheme works iteratively and performs three major tasks. In the first step, the subcarrier with largest capacity difference of two active users is found. Then, the subcarrier selection of these tw...
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ژورنال
عنوان ژورنال: IET Signal Processing
سال: 2018
ISSN: 1751-9675,1751-9683
DOI: 10.1049/iet-spr.2018.5080