Authors : M.A. Gadam, L. Maijama`a and I.H. Usman
Abstract: Long Term Evolution (LTE) by 3rd Generation Project Partnership (3GPP) is one of the radio access technologies used for delivering broadband mobile services. It is mainly influenced by high data rates, minimum delay and the capacity due to scalable bandwidth and its flexibility. The downlink LTE employs Orthogonal Frequency Division Multiple Access (OFDMA) as a multiple access technique. The conventional resource allocation method in OFDMA employed different Modulation and Coding Scheme (MCS) on allocated subcarriers to achieve good throughput. But in the downlink LTE, all scheduling blocks at a given Transmission Time Interval (TTI) to user must adopt same MCS and these brings about constraints in the system and as a result degrade system performance. This study reviewed several resource allocation schemes for throughput maximization in LTE downlink. In each of the schemes considered, the sub-optimal solution shows a significant performance improvement compared to the optimal solution. A Quality of Service (QoS) guaranteed RB allocation achieves high throughput compared to other schemes considered in this study.
M.A. Gadam, L. Maijama`a and I.H. Usman, 2013. A Review of Resource Allocation Techniques for Throughput Maximization in Downlink LTE. Journal of Mobile Communication, 7: 17-23.