DocumentCode
2897119
Title
Reduced Feedback Designs for SDMA-OFDMA Systems
Author
Özbek, Berna ; Le Ruyet, Didier
Author_Institution
Electr. & Electron. Eng. Dept., Izmir Inst. of Technol., Izmir, Turkey
fYear
2009
fDate
14-18 June 2009
Firstpage
1
Lastpage
6
Abstract
In SDMA-OFDMA wireless communication systems, the feedback load increases with the number of users, subcarriers and antennas in the cell. In this paper, we propose two efficient reduced feedback algorithms by selecting the clusters at the user side. For each cluster, we select the users according to their norm and their orthogonality. We evaluate the performance of the user selection algorithms considering the quantization effect. We also design a specific codebook design to quantize CSI for the proposed criterion.
Keywords
OFDM modulation; frequency division multiple access; space division multiple access; SDMA-OFDMA systems; channel state information; codebook design; feedback design reduction; quantization effect; user selection algorithms; wireless communication; Algorithm design and analysis; Clustering algorithms; Feedback; Frequency conversion; Multiaccess communication; OFDM; Quantization; Radio transmitters; Resource management; Space technology;
fLanguage
English
Publisher
ieee
Conference_Titel
Communications, 2009. ICC '09. IEEE International Conference on
Conference_Location
Dresden
ISSN
1938-1883
Print_ISBN
978-1-4244-3435-0
Electronic_ISBN
1938-1883
Type
conf
DOI
10.1109/ICC.2009.5199400
Filename
5199400
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