Enhanced User Fairness Using Non-Orthogonal Access with SIC in Cellular Uplink
- 1 September 2011
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
This paper investigates the enhancement of cell-edge user throughput by using non-orthogonal access with a successive interference canceller (SIC) in the cellular uplink compared to orthogonal access, which is widely used in 3.9 and 4G mobile communication systems. Since both the total user throughput and cell-edge user throughput are important in a real system, we compare the cell-edge user throughput, while subject to the same total user throughput. The optimum resource allocation such as bandwidth and transmission power for each user is assumed for the respective access schemes based on the instantaneous channel conditions. Based on the evaluation results, we show that non-orthogonal access with a SIC can significantly enhance the cell-edge user throughput (thus user fairness) compared to the orthogonal access while achieving the same total user throughput in the context of the cellular uplink, which can yield some insights regarding the direction of the wireless access scheme for the systems beyond IMT-Advanced.Keywords
This publication has 7 references indexed in Scilit:
- Throughput of a wireless cell using superposition based multiple-access with optimized schedulingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2010
- Enhancement of throughput and fairness in 4G wireless access systems by non-orthogonal signalingBell Labs Technical Journal, 2009
- Comparison of orthogonal and non-orthogonal approaches to future wireless cellular systemsIEEE Vehicular Technology Magazine, 2006
- Superposition by PositionPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2006
- Fundamentals of Wireless CommunicationPublished by Cambridge University Press (CUP) ,2005
- Data throughput of CDMA-HDR a high efficiency-high data rate personal communication wireless systemPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Elements of Information TheoryPublished by Wiley ,2001