## Abstract

Multiuser detection can often be described as a constrained quadratic optimisation problem. Many iterative techniques are available to solve this problem; however, due to high complexity they cannot be effectively implemented in real-time. We propose a novel iterative technique, the DCD (Dichotomous Coordinate Descent) algorithm which guarantees convergence in the box-constrained quadratic optimisation problem. We investigate application of the DCD algorithm to multiuser detection and show that it provides a high detection performance and complexity lower than other known box-constrained multiuser detectors. Moreover, the proposed algorithm is multiplication-free and division-free; this makes it attractive for real-time implementation in hardware (FPGA, ASIC) or fixed point (DSP) software.

Original language | English |
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Title of host publication | 2004 IEEE 5TH WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS |

Place of Publication | NEW YORK |

Publisher | IEEE |

Pages | 483-486 |

Number of pages | 4 |

ISBN (Print) | 0-7803-8337-0 |

Publication status | Published - 2004 |

Event | 5th IEEE Workshop on Signal Processing Advances in Wireless Communications - Lisbon Duration: 11 Jul 2004 → 14 Jul 2004 |

### Conference

Conference | 5th IEEE Workshop on Signal Processing Advances in Wireless Communications |
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City | Lisbon |

Period | 11/07/04 → 14/07/04 |

## Keywords

- MULTIPLE-ACCESS CHANNELS