A low-complexity resource allocation scheme for OFDMA multicast systems with proportional fairness

2018 ◽  
Vol 15 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Lijing Jiang ◽  
Rongfang Song
Keyword(s):  
Resource Allocation ◽  
Low Complexity ◽  
Proportional Fairness ◽  
Allocation Scheme ◽  
Resource Allocation Scheme

Resource Allocation Scheme Based on Rate-Requirement for Device-to-Device Downlink Communications

2019 ◽  
Vol 33 (13) ◽  
pp. 1959040
Author(s):  
Xin Wang ◽  
Zhihong Qian ◽  
Xue Wang ◽  
Lan Huang
Keyword(s):  
Resource Allocation ◽  
Low Complexity ◽  
Superior Performance ◽  
System Throughput ◽  
Allocation Scheme ◽  
Resource Reallocation ◽  
Restricted Area ◽  
Device To Device ◽  
Resource Allocation Scheme ◽  
Rate Requirement

The rate-requirement of device-to-device (D2D) users is associated with the context information of velocity and data size of users to some extent. In this study, an efficient context-aware resource allocation scheme based on rate requirement (RARR) is proposed. This scheme consists of two allocation phases. In the rate-ensuring resource allocation phase, D2D pairs are allocated a certain amount of spectrum resource according to their rate requirement. In the allocation, the interference restricted area is limited to exclude cellular users that bring a negative capacity gain to the communication system. In the residual resource reallocation phase, surplus resources are assigned to D2D pairs according to the system fairness. Simulation results indicate that the proposed RARR scheme efficiently leads to superior performance in terms of system throughput and fairness and exhibits low complexity relative to traditional resource allocation.

scholarly journals A Novel Fairness-Aware Resource Allocation Scheme in Multiuser SISO-OFDMA Downlink

2010 ◽  
Vol 2010 ◽  
pp. 1-10 ◽  
Author(s):  
Vasileios D. Papoutsis ◽  
Ioannis G. Fraimis ◽  
Stavros A. Kotsopoulos
Keyword(s):  
Resource Allocation ◽  
Multiple Access ◽  
Computational Cost ◽  
Wireless Systems ◽  
Base Station ◽  
Proportional Fairness ◽  
Allocation Scheme ◽  
Single Input Single Output ◽  
Data Rates ◽  
Resource Allocation Scheme

The problem of resource allocation for the downlink of wireless systems operating over a frequency-selective channel is investigated. It is assumed that both the Base Station (BS) and each user are equipped with a single antenna (Single Input Single Output-SISO case), and Orthogonal Frequency Division Multiple Access (OFDMA) is used as a multiple access scheme. The aim is to maximize the sum of the users' data rates subject to constraints on total available power and proportional fairness among users' data rates. Achieving the optimal solution has a high computational cost thereby the use of suboptimal techniques is necessary. A suboptimal, but efficient, scheme is devised, and it is shown, via simulation, that not only the proposed resource allocation scheme achieve higher sum of the users' data rates than other existing schemes but also the sum data rate is distributed fairly and flexibly among users. In addition, the proposed scheme is complexity effective and can be applied to latest-generation wireless systems that provide Quality-of-Service (QoS) guarantees.

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