enhanced frequency resource allocation schemes for interference management in lte hybrid networks
M.Varsha,Jegathees kumar B
Published in International Journal of Advanced Research in Electronics, Communication & Instrumentation Engineering and Development
ISSN: 2347 -7210 Impact Factor:1.9 Volume:2 Issue:1 Year: 07 April,2016 Pages:61-70
Abstract
In this paper, we present and evaluate the performance of various frequency allocation schemes. We use resource allocation algorithm in addition to traditional frequency reuse schemes that aim to enhance the Quality of Service (QoS) provision, increase overall channel capacity, reduce the BER(Bit error rate) and increase the energy efficiency of uplink Long Term Evolution (LTE) systems. The proposed algorithm considers the main constraints in uplink LTE resource allocation, i.e., the allocation of contiguous sets of resource blocks of the localized Frequency Division Multiple Access (FDMA) physical layer to each user, and the imperfect knowledge of the users uplink buffer status and packet waiting time. The proposed optimal resource allocation algorithm uses information on the estimated uplink packet delay, the average delay and data rate of past allocations, as well as the required uplink power per resource block.Based on simulation results, the proposed algorithm achieves significant performance improvement in terms of packet timeoutrate, goodput, and fairness. Moreover, the effect of poor QoSprovision on energy efficiency is demonstrated through the evaluation of the performance in terms of energy consumption per successfully received bit. We analyze the system performance with various frequency allocation schemes via different metrics such as throughput, quality of service (QoS) and fairness. Simulation results show that the pro-posed resource allocation scheme with an optimized parameters provides an acceptable tradeoff compared to other allocation schemes.
Kewords
Femtocells, Frequency Reuse, Resource Allocation, FFR, SFR, PFR, SFFR, Heterogeneous LTE Networks, frequency planning, Fractional Frequency Reuse, in
Reference
Corrections to and comment on "Throughput and optimal Threshold for FFR Schemes in OFDMA cellular networks"
