DocumentCode :
2611569
Title :
Delta Metric Scheduling for LTE-Advanced Uplink Multi-User MIMO Systems
Author :
Shang, Peng ; Zhu, Xudong ; Zhang, Lu ; Wu, Jinsong ; Chen, Jinhui
Author_Institution :
Bell Labs., Alcatel-Lucent, Shanghai, China
fYear :
2012
fDate :
6-9 May 2012
Firstpage :
1
Lastpage :
5
Abstract :
Proportional fair (PF) scheduling algorithm has been extensively utilized in many different systems, since it can support both multi-user diversity and system fairness guarantee. Brute-force searching is the optimal scheduling, pairing and ordering algorithm. However, the optimal brute-force searching method is too computationally prohibitive, especially in case of the large number of users. This paper proposes a novel 2-dimensional grid based scheduling scheme for uplink MU-MIMO transmission using either the conventional proportional fairness metric or delta scheduling metric. Comparing to the scheduling approach using the conventional priority based pairing metric, the proposed scheduling algorithm based on delta scheduling metric could obtain approximate 7% gain for both cell and cell-edge throughput gain with neglectful computational complexity increase. With the aid of successive interference cancellation, MU-MIMO with MMSE-SIC receiver could also improve the cell-edge throughput compared to SU-MIMO. The advantage of the proposed scheme is that it can improve the throughput performance without the sacrifice of the user fairness guarantee.
Keywords :
Long Term Evolution; MIMO communication; least mean squares methods; multi-access systems; radio receivers; scheduling; 2-dimensional grid based scheduling; LTE-advanced uplink multi-user MIMO systems; MMSE-SIC receiver; PF scheduling; brute-force searching; delta metric scheduling; multi-user diversity; proportional fair scheduling; uplink MU-MIMO transmission; Frequency domain analysis; Interference; Optimal scheduling; Receivers; Scheduling algorithms; Throughput;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference (VTC Spring), 2012 IEEE 75th
Conference_Location :
Yokohama
ISSN :
1550-2252
Print_ISBN :
978-1-4673-0989-9
Electronic_ISBN :
1550-2252
Type :
conf
DOI :
10.1109/VETECS.2012.6240079
Filename :
6240079
Link To Document :
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