Title :
Improved CDMA performance through bias reduction for parallel interference cancellation
Author :
Correal, Neiyer S. ; Buehrer, R. Michael ; Woerner, Brian D.
Author_Institution :
Mobile & Portable Radio Res. Group, Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
Parallel multistage interference cancellation is a promising approach for practical implementation of multiuser detection. However, as this paper shows, direct implementation of multistage parallel interference cancellation (i.e. complete cancellation of the estimated interference) results in biased estimates and consequently reduced performance. A simple technique that mitigates the effect of the bias and provides significant performance gains over the direct implementation is presented
Keywords :
Gaussian channels; code division multiple access; interference suppression; radio receivers; AWGN channel; CDMA performance; bias reduction; multistage interference cancellation; multiuser detection; parallel interference cancellation; performance gains; Computational complexity; Computer architecture; Electrical capacitance tomography; Interference cancellation; Multiaccess communication; Multiple access interference; Performance gain; Power system modeling; Statistical analysis; Statistics;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1997. Waves of the Year 2000. PIMRC '97., The 8th IEEE International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-3871-5
DOI :
10.1109/PIMRC.1997.631095
