TY - JOUR
T1 - Downlink-to-uplink interference cancellation in cloud radio access networks
AU - Lin, Wei Ting
AU - Lee, Chia-Han
AU - Su, Hsuan Jung
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Dynamically choosing the time-division duplex (TDD) configuration in Long-Term Evolution (LTE) results in intercell interference. Among various interference types, the downlink-to-uplink interference is the strongest due to the much larger downlink (DL) transmission power from a base station than the uplink (UL) transmission power from a user equipment (UE). Although coordinating the neighboring base stations to operate in the same UL/DL configuration is a way to mitigate the interference, the flexibility of TDD is sacrificed. In this paper, we discuss an interference cancellation method exploiting the cloud radio access network (C-RAN) architecture. The downlink- to-uplink interference is cancelled by utilizing the knowledge of the downlink signal available at the cloud server. Simulation results show the effectiveness of this method, which maintains the flexibility of dynamically choosing the UL/DL configuration according to the traffic demand in the TDD system.
AB - Dynamically choosing the time-division duplex (TDD) configuration in Long-Term Evolution (LTE) results in intercell interference. Among various interference types, the downlink-to-uplink interference is the strongest due to the much larger downlink (DL) transmission power from a base station than the uplink (UL) transmission power from a user equipment (UE). Although coordinating the neighboring base stations to operate in the same UL/DL configuration is a way to mitigate the interference, the flexibility of TDD is sacrificed. In this paper, we discuss an interference cancellation method exploiting the cloud radio access network (C-RAN) architecture. The downlink- to-uplink interference is cancelled by utilizing the knowledge of the downlink signal available at the cloud server. Simulation results show the effectiveness of this method, which maintains the flexibility of dynamically choosing the UL/DL configuration according to the traffic demand in the TDD system.
UR - http://www.scopus.com/inward/record.url?scp=84936849901&partnerID=8YFLogxK
U2 - 10.1109/VTCSpring.2014.7022892
DO - 10.1109/VTCSpring.2014.7022892
M3 - Conference article
AN - SCOPUS:84936849901
SN - 1550-2252
VL - 2015-January
JO - IEEE Vehicular Technology Conference
JF - IEEE Vehicular Technology Conference
IS - January
M1 - 7022892
T2 - 2014 79th IEEE Vehicular Technology Conference, VTC 2014-Spring
Y2 - 18 May 2014 through 21 May 2014
ER -