A low complexity scheduling scheme based on multi-user beamforming in TD-LTE downlink

Author

Wang, Sen ; Wang, Yafeng ; Yang, Dacheng

Author_Institution

Wireless Theor. & Technol. Lab. (WT&T), Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2011

fDate

2-5 Oct. 2011

Firstpage

43

Lastpage

47

Abstract

Multi-user multi-input and multi-output based on block diagonalization algorithm can eliminate the multi-user interference, but in fact the existence of the non-ideal factors lead to the interference can not be cancelled completely. In this paper we study the performance of the 3GPP long term evolution system based on BD algorithm and propose a low complexity multi-user scheduling scheme to reduce the mismatch between the CQI and the PostSINR. To get the tradeoff between the cell average capacity and the cell edge user capacity, proportional fairness scheduling is applied. Finally, simulation results with 3GPP LTE are presented using system level simulator.

Keywords

3G mobile communication; Long Term Evolution; array signal processing; interference suppression; scheduling; 3GPP LTE; 3GPP Long Term Evolution system; BD algorithm; CQI; PostSINR; TD-LTE downlink; block diagonalization algorithm; cell edge user capacity; low complexity scheduling scheme; multiuser beamforming; multiuser interference elimination; multiuser multiinput multioutput system; proportional fairness scheduling; Array signal processing; Complexity theory; Downlink; Interference; MIMO; Scheduling; Throughput; BD; CQI; MU-BF; Scheduling;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (APCC), 2011 17th Asia-Pacific Conference on

Conference_Location

Sabah

Print_ISBN

978-1-4577-0389-8

Type

conf

DOI

10.1109/APCC.2011.6152757

Filename

6152757