DocumentCode :
3687237
Title :
Single-phase feedback and scheduling algorithm for MIMO broadcast system for excelling sum-rate capacity
Author :
Barsha Barnali Panigrahi;Sagnika Sahoo;Sudhansu Sekhar Singh
Author_Institution :
School of Electronics Engineering, KIIT University, Bhubaneswar-751024, Odisha, India
fYear :
2015
fDate :
4/1/2015 12:00:00 AM
Firstpage :
750
Lastpage :
753
Abstract :
This work proposes a strategic single-phase feedback and scheduling algorithm basing upon semi-orthogonal user selection with zero-forcing beam forming. Zero-forcing beam- forming is a spatial signal processing method in order to avoid hindrance among users. For a downlink system, the ZFBF algorithm allows a transmitter to send data to the desired users together. This paper uses semi-orthogonal user algorithm (SUS), with the feedback of all user channel information, along a base station device. Thus, the response overhead increases significantly with the users in order to decrease the feedback load and it fully exploits the signal-to-interference-with-noise ratio (SINR) preserving orthogonality at all the stages. Accordingly, in this way a specific section of users provide feedback to their channel information. Further, the sum-rate capacity is theoretically investigated. We found that there is an improvement of sum-rate capacity considering feedback bits fixed, with an increase in the number of users.
Keywords :
"Indexes","Delays","MATLAB","Receiving antennas","Algorithm design and analysis","Multiplexing"
Publisher :
ieee
Conference_Titel :
Communications and Signal Processing (ICCSP), 2015 International Conference on
Type :
conf
DOI :
10.1109/ICCSP.2015.7322590
Filename :
7322590
Link To Document :
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