TY - GEN
T1 - Intelligent resource optimisation using semi-smart antennas in LTE OFDMA systems
AU - Wang, Yapeng
AU - Yang, Xu
AU - Ma, Athen
AU - Cuthbert, Laurie
PY - 2009
Y1 - 2009
N2 - The next generation 3GPP long-term evolution (LTE) mobile system will use orthogonal frequency division multiplexing access (OFDMA) as the key technology to improve the spectrum efficiency and flexible user resource allocation. One of the challenges of OFDMA systems is the interference at the cell edge where users are likely to get high interference from neighbouring cells. In a network with non-uniform traffic distribution, the problem becomes even more challenging. In this paper, a semi-smart antenna based resource allocation scheme is proposed for the LTE OFDMA system. The scheme features a centralised Genetic Algorithm (GA) algorithm that changes the cellular coverage in a coordinated manner to improve the system capacity and mitigate network interference. Simulation experiments have been carried out to evaluate the performance of the proposed scheme, the results showing significant performance improvement in terms of total traffic load achieved for all cells compared to a system with fixed coverage pattern.
AB - The next generation 3GPP long-term evolution (LTE) mobile system will use orthogonal frequency division multiplexing access (OFDMA) as the key technology to improve the spectrum efficiency and flexible user resource allocation. One of the challenges of OFDMA systems is the interference at the cell edge where users are likely to get high interference from neighbouring cells. In a network with non-uniform traffic distribution, the problem becomes even more challenging. In this paper, a semi-smart antenna based resource allocation scheme is proposed for the LTE OFDMA system. The scheme features a centralised Genetic Algorithm (GA) algorithm that changes the cellular coverage in a coordinated manner to improve the system capacity and mitigate network interference. Simulation experiments have been carried out to evaluate the performance of the proposed scheme, the results showing significant performance improvement in terms of total traffic load achieved for all cells compared to a system with fixed coverage pattern.
KW - 3GPP long-term evolution (LTE)
KW - Genetic algorithm (GA)
KW - OFDMA
KW - Semi-smart antenna
KW - Spectral efficiency
UR - http://www.scopus.com/inward/record.url?scp=74549171453&partnerID=8YFLogxK
U2 - 10.1109/ICCOMTA.2009.5349214
DO - 10.1109/ICCOMTA.2009.5349214
M3 - Conference contribution
AN - SCOPUS:74549171453
SN - 9781424448203
T3 - Proceedings of 2009 IEEE International Conference on Communications Technology and Applications, IEEE ICCTA2009
SP - 173
EP - 179
BT - Proceedings of 2009 IEEE International Conference on Communications Technology and Applications, IEEE ICCTA2009
T2 - 2009 IEEE International Conference on Communications Technology and Applications, IEEE ICCTA2009
Y2 - 16 October 2009 through 18 October 2009
ER -