TY - GEN
T1 - On the statistics of sub-carrier collisions for cell-edge users and air interface capacity in OFDMA systems
AU - Ekin, Sabit
AU - Yarkan, Serhan
AU - Qaraqe, Khalid A.
AU - Serpedin, Erchin
PY - 2011
Y1 - 2011
N2 - In next generation wireless networks (NGWNs), interference is one of the most important considerations in terms of system design, deployment, and performance. Given the ability to use the spectrum in finer granularity such as in orthogonal frequency division multiple access (OFDMA) systems, scheduling seems to be one of the most important functionalities of NGWNs. Therefore, in this study, sub-carrier collisions for especially cell-edge users are investigated along with their impact on air interface capacity for OFDMA-based systems. It is shown that sub-carrier collisions follow hypergeometric distribution with different statistical characteristics. In addition, the air interface capacity of OFDMA systems with the availability of interference is studied as well. Numerical results are presented to verify the theoretical analysis and investigate the impacts of different parameters on both sub-carrier collisions and the air interface capacity.
AB - In next generation wireless networks (NGWNs), interference is one of the most important considerations in terms of system design, deployment, and performance. Given the ability to use the spectrum in finer granularity such as in orthogonal frequency division multiple access (OFDMA) systems, scheduling seems to be one of the most important functionalities of NGWNs. Therefore, in this study, sub-carrier collisions for especially cell-edge users are investigated along with their impact on air interface capacity for OFDMA-based systems. It is shown that sub-carrier collisions follow hypergeometric distribution with different statistical characteristics. In addition, the air interface capacity of OFDMA systems with the availability of interference is studied as well. Numerical results are presented to verify the theoretical analysis and investigate the impacts of different parameters on both sub-carrier collisions and the air interface capacity.
UR - http://www.scopus.com/inward/record.url?scp=80052623351&partnerID=8YFLogxK
U2 - 10.1109/ISSCS.2011.5978682
DO - 10.1109/ISSCS.2011.5978682
M3 - Conference contribution
AN - SCOPUS:80052623351
SN - 9781457702013
T3 - ISSCS 2011 - International Symposium on Signals, Circuits and Systems, Proceedings
SP - 153
EP - 156
BT - ISSCS 2011 - International Symposium on Signals, Circuits and Systems, Proceedings
T2 - International Symposium on Signals, Circuits and Systems, ISSCS 2011
Y2 - 30 June 2011 through 1 July 2011
ER -