Frame-based adaptive uplink scheduling algorithm in orthogonal frequency division multiple access-based Worldwide Interoperability for Microwave Access networks

2011 ◽  
Vol 25 (11) ◽  
pp. 1381-1397 ◽  
Author(s):  
Bor-Jiunn Hwang ◽  
I-Shyan Hwang ◽  
Chih-Wei Huang
Keyword(s):  
Multiple Access ◽  
Scheduling Algorithm ◽  
Access Networks ◽  
Frequency Division ◽  
Uplink Scheduling

scholarly journals A New Swap-Based Frequency-Domain Packet Scheduling Algorithm in OFDMA System with Data Queue Size Constraints

2016 ◽  
Vol 2016 ◽  
pp. 1-7
Author(s):  
Lin Shao ◽  
Yunxiao Zu ◽  
Hanyong Shao
Keyword(s):  
Frequency Domain ◽  
Multiple Access ◽  
Packet Scheduling ◽  
Scheduling Algorithm ◽  
System Throughput ◽  
Queue Size ◽  
Frequency Division ◽  
Ofdma System ◽  
Size Constraints ◽  
Throughput Improvement

This paper aims at the frequency-domain packet scheduling (FDPS) problem in orthogonal frequency division multiple access (OFDMA) system. Under users’ data queue size constraints, a new swap-based FDPS algorithm is proposed to achieve further improvement in system throughput. In this algorithm, the swap of physical resource blocks (PRBs) between different users is introduced to give a comprehensive view of the overall scheduling process. Moreover, the proposed algorithm optimizes the choosing method of swap candidates and always tries to select the user who can maximize the throughput improvement. Simulation results demonstrate that this new algorithm can improve the system throughput significantly as well as reduce the resource waste effectively.

Cross-layer resource optimisation in time-varying orthogonal frequency division multiple access networks with guaranteed delay

2017 ◽  
Vol 11 (8) ◽  
pp. 1256-1263 ◽  
Author(s):  
Yashuang Guo ◽  
Qinghai Yang ◽  
Daeyoung Park ◽  
Kyung Sup Kwak
Keyword(s):  
Multiple Access ◽  
Access Networks ◽  
Cross Layer ◽  
Time Varying ◽  
Frequency Division

scholarly journals Hybrid model for throughput evaluation of orthogonal frequency division multiple access networks

2014 ◽  
Vol 2014 (3) ◽  
pp. 62-70
Author(s):  
Shyam Babu Mahato ◽  
Tien Van Do ◽  
Ben Allen ◽  
Enjie Liu ◽  
Jie Zhang
Keyword(s):  
Hybrid Model ◽  
Multiple Access ◽  
Access Networks ◽  
Frequency Division

scholarly journals Adaptive Phase Rolling for Opportunistic Beamforming in OFDMA Systems with a Small Number of Users

2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Minjoong Rim
Keyword(s):  
Multiple Access ◽  
Scheduling Algorithm ◽  
Proportional Fairness ◽  
Frequency Division ◽  
Opportunistic Beamforming ◽  
Beamforming Technique

The performance of opportunistic beamforming might be degraded if the number of users is small. This paper proposes an adaptive opportunistic beamforming technique for orthogonal frequency division multiple access systems, which can produce good results even with a small number of users. This paper also proposes a modified proportional fairness scheduling algorithm, which can further improve the performance of the proposed opportunistic beamforming technique.

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