Adaptive Resource Allocation for Wireless Multi-cast MIMO OFDM using Water filling Algorithm
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 3, Issue 10
Abstract
Multiple antenna orthogonal frequency division multiple access (OFDMA) is a promising technique for the high downlink capacity in the next generation wireless systems, in which adaptive resource allocation would be an important research issue that can significantly improve the performance with guaranteed Quos for users. . In this paper we look into the performance of such cooperative OFDMA systems under realistic conditions. We propose a transceiver structure to reduce the interference between transmitting subcarriers and receiving subcarriers. Its performance in terms of signal to interference and noise ratio (SINR) is evaluated by both analysis and simulation and is incorporated into a recently proposed cooperation strategy for OFDMA systems to examine its performance under the realistic structure. It is shown that although the cooperation strategy suffers from performance degradation due to the residual interference between the transmitting and receiving subcarriers, it still outperforms the conventional cooperation schemes. Moreover, most of the current source allocation algorithms are limited to the unicast system. In this paper, dynamic resource allocation is studied for multiple antenna OFDMA based systems which provide multicast service. The performance of multicast system is simulated and compared with that of the unicast system..
Authors and Affiliations
Soumya Gunda
DESIGN OF HIGH SPEED SUBTHRESHOLD INTERCONNECTS USING MCML TECHNIQUE
The recent trend in the VLSI industry toward miniature designs, low power consumption, and increased growth of portable applications compels researchers to design circuit having high speed. This is achieved by...
OPTIMIZING PARAMETERS OF FUZZY ART FOR IMPROVING THE ACCURACY OF NIDS
Intrusion Detection System (IDS) has been developed in order to provide a defense mechanism against the intrusive activities carried over network. This paper discusses an approach of Intrusion detection system using F...
Risk Analysis and Mitigation Plan in Software Development
Software development, often encounter many unanticipated problems, resulting in projects falling behind on deadlines, releases, exceeding budgets and result in sub-standard products due to its complex nature. Alth...
OPTIMIZATION OF VALVETRAIN MECHANISM FOR THREE CYLINDER TURBOCHARGED INTERCOOLED GASOLINE ENGINE
Present work descries the effect of in-cylinder pressure in turbocharged gasoline engine, on valvetrain analysis. Consideration of cylinder pressure gives corrected stresses and also it gives scope for reduction in movin...
COMPARATIVE STUDY OF CLUSTERING TECHNIQUES IN MULTIVARIATE DATA ANALYSIS
In present, Clustering techniques is a standard tool in several exploratory pattern-analysis, grouping, decision making, and machine-learning situations; including data mining, document retrieval, image segmentati...