Joint modulation classification and detection using sphere decoding

Byonghyo Shim, Insung Kang

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


In this letter, we propose a simple yet effective modulation classification method for maximum likelihood multiuser detection. Our method is a modification of generalized likelihood ratio test (GLRT) that approximates the optimal classifier in the Bayesian sense. We show that the proposed method can be implemented by modifying the sphere decoding algorithm to support multimodulation. Simulation results in multiuser detection in high-speed downlink packet access (HSDPA) system show that the proposed method offers considerable performance gain over conventional RAKE and MMSE algorithms.

Original languageEnglish
Article number2024805
Pages (from-to)778-781
Number of pages4
JournalIEEE Signal Processing Letters
Issue number9
Publication statusPublished - 2009


  • Generalized likelihood ratio test (GLRT)
  • Modulation classification
  • Multiuser detection
  • Sphere decoding

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering
  • Applied Mathematics


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