Despread-respread multi-target constant modulus array for CDMA systems

Zhigang Rong, Paul Petrus, Theodore S. Rappaport, Jeffrey H. Reed

Research output: Contribution to journalArticlepeer-review


In this letter, we apply the concept of the despread-respread (DR) algorithm to multi-target arrays for code-division multiple-access (CDMA) signals. The despread-respread algorithm exploits the knowledge of the pseudo-noise (PN) code used to generate the transmitted CDMA signal. We extend the DR algorithm to not only exploit the knowledge of the PN code but also to preserve the constant modulus property of the signal. This new algorithm is called the Least Squares Despread Respread Multi-target Constant Modulus Array (LS-DRMTCMA). LS-DRMTCMA performs better than the Least Squares Despread Respread Multi-Target Array (LS-DRMTA), Least Squares Multi-Target Constant Modulus Array (LS-MTCMA) [1], and Steepest Descent Multi-Target Decision Directed Array (SD-MTDDA).

Original languageEnglish (US)
Pages (from-to)114-116
Number of pages3
JournalIEEE Communications Letters
Issue number4
StatePublished - 1997


  • CDMA
  • CMA
  • Despread-respread algorithms
  • Multi-target arrays

ASJC Scopus subject areas

  • Modeling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering


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