Residue Number System Arithmetic Assisted Coded Frequency-Hopped OFDMA
Department of Electrical & Computer Engineering, Kansas State University, 2061 Rathbone Hall, Manhattan, KS 66506, USA
EURASIP Journal on Wireless Communications and Networking 2009, 2009:263695 doi:10.1155/2009/263695Published: 26 March 2009
We propose an RNS arithmetic-based FH pattern design approach that is well suited and easy to implement for practical OFDMA systems. The proposed FH scheme guarantees orthogonality among intracell users while randomizing the intercell interferences and providing frequency diversity gains. We present detailed construction procedures and performance analysis for both independent and cluster hopping scenarios. Using simulation results, we demonstrate the gains due to frequency diversity and intercell interference diversity on the system bit error rate (BER) performance. Furthermore, the BER performance gain is consistent across all cells unlike other FH pattern design schemes such as the Latin squares (LSs-)-based FH pattern design where wide performance variations are observed across cells.