DocumentCode :
3218303
Title :
Distributed precoding technology of reducing inter-cell interference in LTE downlink
Author :
Fu, Weihong ; Shi, Fan ; Liu, Naian
Author_Institution :
State Key Lab. of Intergrated Service Networks, Xidian Univ., Xi´´an, China
fYear :
2011
fDate :
27-29 May 2011
Firstpage :
369
Lastpage :
372
Abstract :
Aim at the problem of the adjacent cell interference in LTE (long Term Evolution) system, a distributed pre-coding technology based on singular Value Decomposition (SVD) was presented, which need not to exchange user date between the cooperation base station, just need to know the channel state information (CSI) from the baste station to all users (include expected users and adjacent cell users). According to the CSI, The base station can get the pre-coding matrix based on EVD and implementing distributed precoding. Simulation results show that the presented distributed pre-coding method can reduce the inter cell interference and increase the spectral efficiency of users at the cell edge. At the same time, the computational complexity of the presented algorithm is lower than the BD-GMD algorithm and its error bit performance can improve 8dB relative to BD-GMD algorithm when date stream number is 1.
Keywords :
Long Term Evolution; adjacent channel interference; eigenvalues and eigenfunctions; interference suppression; precoding; singular value decomposition; BD-GMD algorithm; EVD; LTE downlink; Long Term Evolution; adjacent cell interference; cell edge; channel state information; cooperation base station; distributed precoding technology; eigenvalue decomposition; inter-cell interference; singular value decomposition; spectral efficiency; Algorithm design and analysis; Bit error rate; Distributed databases; Downlink; Interference; MIMO; Signal to noise ratio; LTE(long Term Evolution); distributed precoding; downlink; inter cell interference;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communication Software and Networks (ICCSN), 2011 IEEE 3rd International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-485-5
Type :
conf
DOI :
10.1109/ICCSN.2011.6013614
Filename :
6013614
Link To Document :
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