Title :
An efficient dynamic resource allocation algorithm for downlink MIMO - OFDMA systems
Author :
Gangwar, Anuj ; Bharti, Manoranjan Rai
Author_Institution :
Dept. of Electron. & Commun. Eng., Nat. Inst. of Technol., Hamirpur, India
Abstract :
Multiple Input Multiple Output (MIMO) - Orthogonal Frequency Division Multiple Access (OFDMA) systems provide high spectral efficiency due to its integrated space-frequency and multi-user diversity. In this paper a Dynamic Resource Allocation (DRA) scheme has been devised for MIMO - OFDMA systems in a downlink scenario. The scheme optimizes the power distribution and guarantees desired Quality of Service (QoS) to each user. The available channel state information at the Base Station (BS) is utilized in order to help these practical schemes to improve system performance and to satisfy various QoS constraints. Computer simulation results demonstrate the proposed scheme performance with the comparison of previous allocation schemes and the proposed scheme satisfy the proportionality constraints and achieves high system capacity.
Keywords :
MIMO communication; OFDM modulation; frequency division multiple access; quality of service; resource allocation; OFDMA system; QoS; base station; downlink MIMO; dynamic resource allocation algorithm; integrated space-frequency and multi-user diversity; multiple input multiple output system; orthogonal frequency division multiple access system; power distribution; quality of service; MIMO; Modulation; OFDM; Quality of service; Radio spectrum management; Resource management; DRA; MIMO - OFDMA; QoS; fairness; singular value decomposition; total system capacity;
Conference_Titel :
Advanced Communication Control and Computing Technologies (ICACCCT), 2014 International Conference on
Conference_Location :
Ramanathapuram
Print_ISBN :
978-1-4799-3913-8
DOI :
10.1109/ICACCCT.2014.7019196
