Software-defined radio architectures for interference cancellation in DS-CDMA systems

Research output: Chapter in Book/Report/Conference proceedingChapter


Third-generationwireless systems call for strategies that can improveachievable performanceand data rates whileproviding flexibility and affordability. Software-defined radio technology is promising to provide the required flexibility in radio frequency, intermediate frequency, and baseband signalprocessing stages. Basebandsignal processing techniquessuch as interference cancellation for direct-sequence code-division multipleaccess systems have the potential to provide the higher performance requirementsof 3G systems. With advances in digitalsignal processortechnology, the gap between the complexity of interference cancellation algorithms and available processing speeds is narrowing. However, 3G systemrequirementsare ever pushingthe envelopeof signal processing algorithms required, including multi-user detection schemes, that are consideredto be attractive and viable candidates. WINLAB has been working on an attractiveSDR solution, to provideflexibility and handle the processing speeds required of 3G radio receivers. The approach is based on SDR architectures that partition radio receiverprocessing into two core technologies (field programmable gate arrays and DSP devices). We present a summary of the SDR workat WINLAB that is based on usingthis mixed signal processing approach for implementation of nonlinear interference cancellationand linear multi-user detection algorithms.

Original languageEnglish (US)
Title of host publicationSoftware Radio Technologies
Subtitle of host publicationSelected Readings
PublisherWiley-IEEE Press
Number of pages9
ISBN (Electronic)9780470546444
ISBN (Print)0780360222, 9780780360228
StatePublished - Jan 1 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Social Sciences(all)

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