TY - GEN
T1 - Hybrid transmission schemes for grouped users in cellular systems
AU - Awad, Juan F.
AU - Imran, Muhammad A.
AU - Tafazolli, Rahim
PY - 2012
Y1 - 2012
N2 - Hybrid systems, where more than one transmission scheme are used within the same cluster, can be used as a way to improve spectral efficiency for the system as a whole and, more importantly, for the cell-edge users. In this paper, we will propose frequency reuse method by grouping the users into two groups, critical and non-critical users. Each user group is served with a transmission scheme, where the most vulnerable users are served by transmission scheme that avoid, make use of, and orthogo-nalise the interference. These schemes include the cooperative maximal ratio transmission and the non-cooperative orthogonal and non-orthogonal schemes. Radio resource allocation is studied and a solution is given for maximal ratio transmission and interference alignment. Simulation results are given, and showing the performance of each scheme when all users are considered critical and one scheme is used. Moreover, results showing the performance of our proposed frequency reuse scheme where different percentage of users considered critical.
AB - Hybrid systems, where more than one transmission scheme are used within the same cluster, can be used as a way to improve spectral efficiency for the system as a whole and, more importantly, for the cell-edge users. In this paper, we will propose frequency reuse method by grouping the users into two groups, critical and non-critical users. Each user group is served with a transmission scheme, where the most vulnerable users are served by transmission scheme that avoid, make use of, and orthogo-nalise the interference. These schemes include the cooperative maximal ratio transmission and the non-cooperative orthogonal and non-orthogonal schemes. Radio resource allocation is studied and a solution is given for maximal ratio transmission and interference alignment. Simulation results are given, and showing the performance of each scheme when all users are considered critical and one scheme is used. Moreover, results showing the performance of our proposed frequency reuse scheme where different percentage of users considered critical.
KW - Critical Users
KW - Hybrid System
KW - Interference Alignment
KW - Maximal Ratio Transmission
KW - Radio Resource Allocation
UR - https://www.scopus.com/pages/publications/84869161765
U2 - 10.1109/IWCMC.2012.6314265
DO - 10.1109/IWCMC.2012.6314265
M3 - Conference contribution
AN - SCOPUS:84869161765
SN - 9781457713781
T3 - IWCMC 2012 - 8th International Wireless Communications and Mobile Computing Conference
SP - 561
EP - 566
BT - IWCMC 2012 - 8th International Wireless Communications and Mobile Computing Conference
T2 - 8th IEEE International Wireless Communications and Mobile Computing Conference, IWCMC 2012
Y2 - 27 August 2012 through 31 August 2012
ER -