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Noncoherent multistage multiuser detection of M-ary orthogonal signals

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Abstract

In recent years, a great deal of research has been performed on methods of alleviating the performance degradations suffered by code division multiple access (CDMA) systems due to multiple access interference. In this paper, we consider a multistage detector for noncoherent CDMA using M-ary orthogonal signals. Using a decorrelating detector as its first stage, the detector iteratively estimates the multiple access interference affecting the desired signal, subtracts the estimated interference, and forms symbol estimates for each of K users. Through numerical examples, the bit error performance of the proposed detector is demonstrated to be superior to that of previous detectors for the same signalling scheme.

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Authors and Affiliations

  1. Center for Advanced Aviation System Development, The MITRE Corporation, McLean, VA, 22102, USA

    Christopher J. Hegarty

  2. Department of Electrical Engineering and Computer Science, The George Washington University, Washington, DC, USA

    Branimir R. Vojcic

Authors
  1. Christopher J. Hegarty
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  2. Branimir R. Vojcic
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Hegarty, C.J., Vojcic, B.R. Noncoherent multistage multiuser detection of M-ary orthogonal signals. Wireless Networks 4, 319–324 (1998). https://doi.org/10.1023/A:1019168726229

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  • DOI: https://doi.org/10.1023/A:1019168726229

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