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Rengini, P.
- Proportional Fair Allocation for MIMO-OFDMA Based Cellular Relay Networks
Authors
1 HCL Technologies, Chennai, IN
2 Pondicherry Engineering College, IN
Source
Programmable Device Circuits and Systems, Vol 4, No 1 (2012), Pagination: 10-14Abstract
The flexibility in relay networks and Orthogonal Frequency-Division Multiple Access (OFDMA) make the combination a suitable candidate network and air-interface technology for providing reliable and ubiquitous high-data-rate coverage in next-generation cellular networks. The Multiple-Input Multiple-Output based Orthogonal Frequency-Division Multiple Access (MIMO-OFDMA) is a promising high rate air interface technology. It is well known that the throughput and coverage of a system can be significantly enhanced by employing a proper resource allocation (RA) scheme. In this paper, we propose an efficient proportional fair (PF) allocation algorithm for MIMO-OFDMA based cellular relay networks in order to achieve throughput gain and to guarantee fairness at the same time. Numerical results show that, the proposed algorithm can achieve significant improvement on system throughput and fairness of the user throughput for the MIMO-OFDMA based cellular relay networks.Keywords
MIMO, OFDMA, Proportional Fairness, Relaying, Resource Allocation.
- Capacity Analysis of MIMO-OFDMA based Cellular Relay Networks
Authors
1 HCL Technologies, IN
2 Department of Electronics and Communication Engineering, Pondicherry Engineering College, Pondicherry, IN
3 Department of Electrical and Electronics Engineering, Pondicherry Engineering College, Pondicherry, IN
Source
Networking and Communication Engineering, Vol 4, No 2 (2012), Pagination: 39-43Abstract
The flexibility in relay networks and Orthogonal Frequency-Division Multiple Access (OFDMA) make the combination a suitable candidate network and air-interface technology for providing reliable and ubiquitous high-data-rate coverage in next-generation cellular networks. The Multiple-Input Multiple-Output based Orthogonal Frequency-Division Multiple Access (MIMO-OFDMA) is a promising high rate air interface technology. It is well known that the capacity and coverage of a system can be significantly enhanced by employing a proper resource allocation (RA) scheme. In this paper, we propose an efficient proportional fair (PF) allocation algorithm for MIMO-OFDMA based cellular relay networks. This proposed algorithm provides a flexible subcarrier allocation in order to maximize the system capacity of the MIMO system. The proposed PF allocation algorithm is also used to improve the system capacity of the higher orders of the MIMOOFDMA based cellular relay networks. Numerical results show that, the proposed algorithm significantly improves the system capacity of the MIMO-OFDMA based cellular relay networks.