TY - GEN
T1 - Adaptive network MIMO architecture based on dynamic user-oriented frequency allocation scheme
T2 - 83rd IEEE Vehicular Technology Conference, VTC Spring 2016
AU - Chang, Wenson
AU - Yang, Chih Yuan
AU - Su, Szu Lin
AU - Lee, Yinman
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/7/5
Y1 - 2016/7/5
N2 - In this paper, we revisit the frequency allocation scheme (FAS) for the homogeneous cellular networks by taking the non-uniform distribution of users into account. Owing to the non-uniformly distributed user density from sector to sector, the traffic loads become highly unbalanced across whole network. Thus, to satisfy users' requests, the dynamic user-oriented FAS (Duo-FAS) is proposed to allocate different amount of subcarriers to sectors according to the variant user densities. However, the Duo-FAS technique can partially remove the innate benefit of interference avoidance via frequency planning, i.e. the conventional three-sectored cell architecture. That means some extra inter-cell interference (ICI) can be produced by using Duo- FAS. Fortunately, the network multiple-input and multiple-output (MIMO) technique can effectively alleviate the impact of ICI. Thanks to Duo-FAS, the number and positions of the cooperative cells when using the network MIMO technique can be significantly different from the conventional schemes. Thus, properly selecting the cooperative cells becomes a pivotal issue. The key is that for any particular user, the neighboring cells to form a cooperative network MIMO group should be adaptively selected so that the strong ICI can be eliminated. The simulation results demonstrated the higher achievable cell capacity.
AB - In this paper, we revisit the frequency allocation scheme (FAS) for the homogeneous cellular networks by taking the non-uniform distribution of users into account. Owing to the non-uniformly distributed user density from sector to sector, the traffic loads become highly unbalanced across whole network. Thus, to satisfy users' requests, the dynamic user-oriented FAS (Duo-FAS) is proposed to allocate different amount of subcarriers to sectors according to the variant user densities. However, the Duo-FAS technique can partially remove the innate benefit of interference avoidance via frequency planning, i.e. the conventional three-sectored cell architecture. That means some extra inter-cell interference (ICI) can be produced by using Duo- FAS. Fortunately, the network multiple-input and multiple-output (MIMO) technique can effectively alleviate the impact of ICI. Thanks to Duo-FAS, the number and positions of the cooperative cells when using the network MIMO technique can be significantly different from the conventional schemes. Thus, properly selecting the cooperative cells becomes a pivotal issue. The key is that for any particular user, the neighboring cells to form a cooperative network MIMO group should be adaptively selected so that the strong ICI can be eliminated. The simulation results demonstrated the higher achievable cell capacity.
UR - http://www.scopus.com/inward/record.url?scp=84979743646&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84979743646&partnerID=8YFLogxK
U2 - 10.1109/VTCSpring.2016.7504118
DO - 10.1109/VTCSpring.2016.7504118
M3 - Conference contribution
AN - SCOPUS:84979743646
T3 - IEEE Vehicular Technology Conference
BT - 2016 IEEE 83rd Vehicular Technology Conference, VTC Spring 2016 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 15 May 2016 through 18 May 2016
ER -