BER performance analysis of Subtractive interference cancellation (SIC) Using Rayleigh channel in DS-CDMA Receiver system

In this paper, we present and analyze the performance of a parallel interference cancellation (PIC) scheme for multicarrier (MC) direct-sequence code-division multiple-access (DS-CDMA) systems. In order to mitigate the multi-path interference (MPI) in the DS CDMA system. At each cancellation stage in the proposed PIC scheme, on each subcarrier, a weighted sum of the soft outputs of the other users in the current stage is cancelled from the soft output of the desired user to form the input to the next stage. At the last stage, the interference cancelled outputs from all the subcarriers are maximal ratio combined (MRC) to form the decision statistic. Parallel interference elimination is first proposed in this paper the multi-path interference are evaluated by tentative decision and known user information. Then the performance over Rayleigh fading channel are analyzed and compared to Matched filter, Decorelator, successive interference cancellation (SIC) and conventional parallel interference cancellation (PIC). It is shown that PIC performance can be improved greatly by using this method with simple structure and easy implementation.

[1]  Candice King,et al.  Fundamentals of wireless communications , 2013, 2013 IEEE Rural Electric Power Conference (REPC).

[2]  Li-xin Song,et al.  A New Parallel Interference Cancellation Algorithm for Rake Systems , 2009, 2009 Third International Conference on Genetic and Evolutionary Computing.

[3]  J. M. Holtzman.  Successive interference cancellation for direct sequence code division multiple access , 1994, Proceedings of MILCOM '94.

[4]  L. Rasmussen,et al.  Multiuser detection in CDMA - a comparison of relaxations, exact, and heuristic search methods , 2004, IEEE Transactions on Wireless Communications.

[5]  Nevio Benvenuto,et al.  Energy optimization of CDMA transceivers using successive interference cancellation , 2004, IEEE Global Telecommunications Conference, 2004. GLOBECOM '04..

[6]  Hamidreza Bakhshi,et al.  DS-CDMA Cellular Systems Performance with Base Station Assignment, Power Control Error, and Beamforming over Multipath Fading , 2011 .

[7]  Khaled M. Elleithy,et al.  A closed-form expression for BER to quantify MAI for synchronous DS-CDMA multi-user detector , 2008, 2008 Wireless Telecommunications Symposium.

[8]  J. Muralidharan,et al.  Highly Efficient BER Performance analysis for interference cancellation in non linear DS CDMA detectors using Dripple algorithm , 2010 .

[9]  Sergio Verdu,et al.  Multiuser Detection , 1998 .

[10]  Candice King,et al.  Fundamentals of wireless communications , 2013, 2014 67th Annual Conference for Protective Relay Engineers.

[11]  Paul D. Alexander,et al.  Iterative multiuser detection for CDMA with FEC: near-single-user performance , 1998, IEEE Trans. Commun..

[12]  R. Michael Buehrer,et al.  A simulation comparison of multiuser receivers for cellular CDMA , 2000, IEEE Trans. Veh. Technol..

[13]  Guoxiong Xu,et al.  New Parallel Interference Cancellation for DS/CDMA Systems Over Rayleigh Fading Channel , 2007, 2007 International Conference on Wireless Communications, Networking and Mobile Computing.

[14]  Zoran Zvonar,et al.  Multiuser detection for CDMA systems , 1995, IEEE Wirel. Commun..

[15]  Hamid Jafarkhani,et al.  Performance analysis of multiple antenna multi-user detection , 2008, 2009 Information Theory and Applications Workshop.

[16]  Bernard Fino,et al.  Multiuser detection: , 1999, Ann. des Télécommunications.