Rasouli, H. and Anpalagan, A. (2011) An Opportunistic Subcarrier Allocation Algorithm Based on Cooperative Coefficient for OFDM Relaying Systems. 7th International Wireless Communications and Mobile Computing Conference (IWCMC), Istanbul, Turkey, 4-8 July 2011, 178-183.

has been cited by the following article:

• TITLE: Modified Cooperative Subchannel Allocation Algorithms and PSO Based Power Allocation for an Alamouti Decode and Forward Relaying Protocol in Multiuser OFDMA Systems

  AUTHORS: K. Shoukath Ali, P. Sampath

  KEYWORDS: Amplify-and-Forward, Decode-and-Forward, Cooperative Relay, Maximal Ratio Combining, Symbol Error Rate

  JOURNAL NAME: Circuits and Systems, Vol.7 No.8, June 20, 2016

  ABSTRACT: The present work is a discussion on the performance analysis of Modified Cooperative Subchannel Allocation (CSA) Algorithms which is used in Alamouti Decoded and Forward (Alamouti DF) Relaying Protocol for wireless multi-user Orthogonal Frequency Division Multiplexing Access (OFDMA) systems. In addition, the performance of approximate Symbol Error Rate (SER) for the Alamouti DF Relaying Protocol with the Cooperative Maximum Ratio Combining Technique (C-MRC)is analyzed and compared with SER upper bound. The approximate SER is asymptotically tight bound at higher Signal-to-Noise Ratio (SNR). From the asymptotic tight bound approximate SER, Particle Swarm Optimization (PSO) based Power Allocation (PA) is determined for the Alamouti DF Relaying Protocol. The simulation results suggested that the Modified Throughput based Subchannel Allocation Algorithm achieved an improved throughput of 6% to 33% compared to that of existing cooperative diversity protocol. Further, the Modified Fairness based Subchannel Allocation Algorithm rendered fairness of 7.2% to 17% among the multiuser against the existing cooperative diversity protocol.