Groupwise successive interference cancellation for multirate CDMA based on MMSE criterion

Jinwen Ma, Hongya Ge

Research output: Contribution to conferencePaperpeer-review

5 Scopus citations

Abstract

In this work, group-wise successive interference cancellation scheme for multi-rate CDMA signals is proposed. The proposed detector works based on the Minimum Mean Square Error (MMSE) criterion. It has the promise of decision feedback interference cancellation for superior performance comparing to the linear MMSE detection at the cost of moderate increasing in complexity. In group-wise detection, users are grouped according to their processing gain or data rate, i.e., users with same processing gain or data-rate are grouped together, then detected. Users with the lowest processing gain or highest data rate are detected first, neglecting the presence of the other users in the system. Interference between the groups is cancelled in a successive order. The BER of the groupwise successive MMSE interference canceler is compared with the BER multi-rate linear MMSE detector and multi-rate decorrelating detector. The results show that the groupwise successive MMSE interference canceler yields better performance than multi-rate linear MMSE detector and multi-rate decorrelating detector. When the system is highly loaded, the groupwise successive MMSE interference canceler can offer better performance than multi-rate linear MMSE detector and multi-rate conventional detector.

Original languageEnglish (US)
Pages1174-1178
Number of pages5
StatePublished - Dec 3 2000
Event2000 IEEE International Conference on Communications - New Orleans, LA, USA
Duration: Jun 18 2000Jun 22 2000

Other

Other2000 IEEE International Conference on Communications
CityNew Orleans, LA, USA
Period6/18/006/22/00

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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