Title :
Sub-Carrier Allocation using Channel Prediction for OFDMA systems based on IEEE 802.16 Standard
Author :
El Defrawy, Karim M. ; Khairy, Mohamed M. ; Nassar, Amin
Author_Institution :
Dept. of Comput. Sci., California Univ., Irvine, CA
Abstract :
The problem of sub-carrier allocation in OFDMA systems has been the focus of recent research efforts. All papers to our knowledge consider the problem of allocating sub-carriers one frame ahead. In this paper, we propose an OFDMA scheme which utilizes future channel prediction to adaptively allocate sub-carriers to each user based on their predicted channel states several frames ahead. The results obtained show that this scheme guarantees the required rates in addition to a fair allocation of the available sub-carriers among users when compared to the traditional single frame case
Keywords :
IEEE standards; channel allocation; frequency division multiple access; wireless LAN; IEEE 802.16 standard; OFDMA systems; channel prediction; subcarrier allocation; Communication standards; Computer science; Cross layer design; Explosives; Media Access Protocol; OFDM; Performance gain; Physical layer; Transport protocols; Wireless sensor networks;
Conference_Titel :
Computer Engineering and Systems, The 2006 International Conference on
Conference_Location :
Cairo
Print_ISBN :
1-4244-0271-9
Electronic_ISBN :
1-4244-0272-7
DOI :
10.1109/ICCES.2006.320475
