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Reduction of the error floor of MSK by nonlinear frequency discriminator

Author

  • Andreas Molisch
  • R Petrovic

Summary, in English

We consider the error floor of binary frequency-shift keying (FSK) due to intersymbol interference in time-dispersive mobile radio channels, with a limiter-discriminator-integrator detector. The errors are caused by bursts in the instantaneous frequency. We propose and verify that a nonlinear frequency discriminator can achieve zero error floor for pure FSK by clipping off these bursts. For filtered FSK, the error floor is not completely removed, but strongly reduced - typically by one or two orders of magnitude. The tighter the filtering, the less effective this nonlinearity is. The nonlinear discriminator can also be used in conjunction with adaptive sampling.

Publishing year

2003

Language

English

Pages

1101-1107

Publication/Series

IEEE Transactions on Wireless Communications

Volume

2

Issue

5

Document type

Journal article

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • discriminators
  • dispersive channels
  • frequency shift keying
  • intersymbol interference
  • minimum shift keying
  • mobile radio
  • signal detection

Status

Published

ISBN/ISSN/Other

  • ISSN: 1536-1276