TY - GEN
T1 - Uplink interference scenarios in two-tier networks
AU - Shi, Zhenning
AU - Reed, Mark C.
AU - Zhao, Ming
AU - Wang, He
PY - 2010
Y1 - 2010
N2 - In this paper, a two-tier UMTS network is considered where a large number of randomly deployed Wideband Code Division Multiple Access (WCDMA) femtocells are laid under macrocells where the spectrum is shared. The co-channel interference between the cells may be a potential limiting factor for the system. We study the uplink of this hybrid network, and identify the critical scenarios that give rise to substantial interference. The mechanism for generating the interference is analyzed and guidelines for interference mitigation are provided. The impacts of the cross-tier interference, especially caused by increased numbers of users and higher data rates is evaluated in the multi-cell simulation environment in terms of the noise rise at the base stations, the cell throughput and the user transmit power consumption.
AB - In this paper, a two-tier UMTS network is considered where a large number of randomly deployed Wideband Code Division Multiple Access (WCDMA) femtocells are laid under macrocells where the spectrum is shared. The co-channel interference between the cells may be a potential limiting factor for the system. We study the uplink of this hybrid network, and identify the critical scenarios that give rise to substantial interference. The mechanism for generating the interference is analyzed and guidelines for interference mitigation are provided. The impacts of the cross-tier interference, especially caused by increased numbers of users and higher data rates is evaluated in the multi-cell simulation environment in terms of the noise rise at the base stations, the cell throughput and the user transmit power consumption.
UR - http://www.scopus.com/inward/record.url?scp=79958017614&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.2010.5757603
DO - 10.1109/ACSSC.2010.5757603
M3 - Conference contribution
SN - 9781424497218
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 471
EP - 476
BT - Conference Record of the 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010
T2 - 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010
Y2 - 7 November 2010 through 10 November 2010
ER -