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Resource Allocation Software Algorithms for AMC-OFDM Systems

This resource allocation software uses adaptive modulation and coding techniques to improve the performance of AMC-OFDM systems. It includes three parts: AMC-OFDM, Resource Allocation for AMC-OFDMA, and User Scheduling and RA for AMC-OFDMA.

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Resource Allocation Software Algorithms for AMC-OFDM Systems

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  1. Resource Allocation Software Algorithms for AMC-OFDM Systems Dr.MuayadSadikCroock Computer Engineering Department, University of Technology

  2. Layout Part 1: Adaptive Modulation and Coding based Orthogonal Frequency Division Multiplexing (AMC-OFDM). • Introduction. • System Model. • Developed Software Life Cycle model. • Results. Part 2: Resource Allocation (RA) for AMC-OFDMA. • Introduction. • System Model. • Designed Software Life Cycle model. • Results. Computer Engineering Department

  3. Layout Part 3: User Scheduling and RA for AMC-OFDMA. • Introduction. • System Model. • Developed Software Life Cycle model. • Results. Computer Engineering Department

  4. General Introduction • The software engineering life cycle methodologies have been employed in the designing of advanced communication systems, in order to achieve: scalable, extendible and portable algorithms. • It is well known that the software life cycle methodologies are divided into sequential and cyclical. • These methods exhibit the main four design phases, which are requirements engineering or analysis, design, implementation, and testing. • The life cycle methods are used to design the strategies of the following applications: 1. AMC-OFDM/OFDMA. 2. Resource allocation for AMC-OFDMA. 3. User scheduling and RA for AMC-OFDMA. Computer Engineering Department

  5. Life cycle model/ Waterfall Method Computer Engineering Department

  6. Life cycle model/ Incremental Method Computer Engineering Department

  7. Life cycle model/ Evolutionary Method Computer Engineering Department

  8. Part 1: AMC-OFDM. Computer Engineering Department

  9. Introduction • Adaptive Modulation and Coding (AMC) Strategy for OFDM systems based on WiMAX standards. • Modulation and Coding Scheme (MCS). • Modulation types of 16-QAM and QPSK combined with (1/2, 2/3 and 3/4) convolutional coding rates. • Channel state information (CSI), which contains the number of sub-channels and the suitable MCSs. Computer Engineering Department

  10. System Model Computer Engineering Department

  11. Transmitted OFDM Frame Computer Engineering Department

  12. Channel Diagram Computer Engineering Department

  13. Channel model Computer Engineering Department

  14. Life cycle model/ Developed AMC Strategy Computer Engineering Department

  15. MCS Selection Computer Engineering Department

  16. MCS Selection Computer Engineering Department

  17. MCS Selection Computer Engineering Department

  18. MCS Selection The CSI is generated from the number of the sub-channels and the number of the suitable MCS, which is between 1 and 6 for six MCS options, for each sub-channel individually to sending back to the transmitter. MCS(1) No. ------ MCS(2) No. MCS(Ncoh) No. Computer Engineering Department

  19. Results The Mobile WiMAX system parameters Computer Engineering Department

  20. Results/ Throughput Computer Engineering Department

  21. Results/ Spectral Efficiency Computer Engineering Department

  22. Part 2: RA for AMC-OFDMA. Computer Engineering Department

  23. Introduction • Cross-layer resource allocation (RA) for AMC-OFDMA systems. • Resources include Power, information streams and users. • Modulation and Coding Scheme (MCS). • Optimization methods. Computer Engineering Department

  24. System Model Computer Engineering Department

  25. Life cycle model/ Developed RA Strategy Computer Engineering Department

  26. Problem Formulation Computer Engineering Department

  27. Results/ Throughput Computer Engineering Department

  28. Results/ MCS selction statistics Computer Engineering Department

  29. Part 3: User Scheduling and RA for AMC-OFDMA. Computer Engineering Department

  30. Introduction • Cross-layer scheduling and resource allocation strategies that work across the open system interconnection (OSI) layers. • Scheduling and resource allocation for AMC-OFDMA systems. • Modulation and Coding Scheme (MCS). • Optimization methods. Computer Engineering Department

  31. System Model Computer Engineering Department

  32. System Model/ Developed user scheduling and RA Strategy Computer Engineering Department

  33. Problem Formulation Computer Engineering Department

  34. Results/ Throughput Computer Engineering Department

  35. EECE 14 28/09/2010 Results/ Throughput vs. No Queues Computer Engineering Department

  36. Thank you Computer Engineering Department

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