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A Fixed-point Implementation of Successive Interference Canceller for WCDMA

Hongxia Zhao (Institutionen för signaler och system, Kommunikationssystem) ; Tony Ottosson (Institutionen för signaler och system, Kommunikationssystem) ; Erik G. Ström (Institutionen för signaler och system, Kommunikationssystem) ; Anna Kidiyarova-Shevchenko ; Konstantin Platov
Proc of the 8th International Conference on Cellular and Intelligent Communications (CIC), Soul, Korea (2003)
[Konferensbidrag, refereegranskat]

Multiuser detectors (MUD) can significantly increase the spectral efficiency of Code Division Multiple Access (CDMA) systems. In this paper, we present a symbol-level fixed-point Successive Interference Canceller (SIC) that is feasible to implement in Rapid Single Flux Quantum (RSFQ) superconducting electronics. A design procedure for finding the precision of the fixed-point SIC is introduced. A set of quantizers is found out with this procedure. By applying those quantizers, the simulation results show that a fixed-point multistage SIC performs the same as a floating-point decorrelator, which increases system capacity by a factor of four for the uplink model used in this paper.

Nyckelord: cdma



Denna post skapades 2006-09-12. Senast ändrad 2013-06-12.
CPL Pubid: 15194

 

Institutioner (Chalmers)

Institutionen för signaler och system, Kommunikationssystem

Ämnesområden

Information Technology

Chalmers infrastruktur

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