Title :
Performance evaluation of Low Density Spreading Multiple Access
Author :
AL-Imari, Mohammed ; Imran, Muhammad Ali ; Tafazolli, Rahim ; Chen, Dageng
Author_Institution :
Centre for Commun. Syst. Res., Univ. of Surrey, Guildford, UK
Abstract :
In this paper, we evaluate the performance of Multicarrier-Low Density Spreading Multiple Access (MC-LDSMA) as a multiple access technique for mobile communication systems. The MC-LDSMA technique is compared with current multiple access techniques, OFDMA and SC-FDMA. The performance is evaluated in terms of cubic metric, block error rate, spectral efficiency and fairness. The aim is to investigate the expected gains of using MC-LDSMA in the uplink for next generation cellular systems. The simulation results of the link and system-level performance evaluation show that MC-LDSMA has significant performance improvements over SC-FDMA and OFDMA. It is shown that using MC-LDSMA can considerably reduce the required transmission power and increase the spectral efficiency and fairness among the users.
Keywords :
cellular radio; error statistics; next generation networks; spectral analysis; MC-LDSMA; block error rate; cubic metric; fairness; mobile communication system; multicarrier low density spreading multiple access; multiple access technique; next generation cellular system; spectral efficiency; system level performance evaluation; Base stations; Complexity theory; Gain; Phase shift keying; Resource management; Multiple access technique; cubic metric; fairness; link-level; low density spreading; spectral efficiency;
Conference_Titel :
Wireless Communications and Mobile Computing Conference (IWCMC), 2012 8th International
Conference_Location :
Limassol
Print_ISBN :
978-1-4577-1378-1
DOI :
10.1109/IWCMC.2012.6314235
