### Abstract

Original language | Undefined |
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Title of host publication | Proceedings of the STW program: ProRISC |

Place of Publication | Veldhoven, The Netherlands |

Publisher | STW/NWO/Dutch Ministry of Economic Affairs |

Pages | 294-300 |

Number of pages | 7 |

ISBN (Print) | 90-73461-43-X |

Publication status | Published - 25 Nov 2004 |

Event | 15th Annual Workshop on Circuits, Systems and Signal Processing, ProRisc 2004 - Veldhoven, Netherlands Duration: 25 Nov 2004 → 26 Nov 2004 Conference number: 15 |

### Publication series

Name | |
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Publisher | STW/NWO/Dutch Ministry of Economic Affairs |

### Conference

Conference | 15th Annual Workshop on Circuits, Systems and Signal Processing, ProRisc 2004 |
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Abbreviated title | ProRisc |

Country | Netherlands |

City | Veldhoven |

Period | 25/11/04 → 26/11/04 |

### Keywords

- adaptive signal processing
- IR-48116
- METIS-219311
- path search
- UMTS

### Cite this

*Proceedings of the STW program: ProRISC*(pp. 294-300). Veldhoven, The Netherlands: STW/NWO/Dutch Ministry of Economic Affairs.

}

*Proceedings of the STW program: ProRISC.*STW/NWO/Dutch Ministry of Economic Affairs, Veldhoven, The Netherlands, pp. 294-300, 15th Annual Workshop on Circuits, Systems and Signal Processing, ProRisc 2004, Veldhoven, Netherlands, 25/11/04.

**Opportunities for Adaptivity in the UMTS Terminal Receiver: The Path-Search Function.** / Potman, J.; Damstra, Marijn; Hoeksema, F.W.; Slump, Cornelis H.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

TY - GEN

T1 - Opportunities for Adaptivity in the UMTS Terminal Receiver: The Path-Search Function

AU - Potman, J.

AU - Damstra, Marijn

AU - Hoeksema, F.W.

AU - Slump, Cornelis H.

N1 - SAS33-04

PY - 2004/11/25

Y1 - 2004/11/25

N2 - Wireless communication systems will have to become more and more exible. In the Adaptive Wireless Networking project we try to develop such a exible wireless communication system by developing algorithms for adaptive implementation of the digital signal processing functions in wireless communication systems. Within the limits of a wireless communication system standard there are two kinds of adaptivity: algorithm-selection adaptivity and algorithm-parameter adaptivity. In this paper we focus on algorithm-selection adaptivity in the UMTS path search function. Therefore we describe two path search algorithms: a Power Delay Prole (PDP) based algorithm and a Maximum Likelihood Estimate (MLE) based algorithm. We study and compare the performance of these algorithms under a number of multipath channel conditions by means of simulations. The MLE based algorithm is able to resolve a larger number of paths, especially when the paths are closely spaced, at the cost of an increased computational complexity. Therefore, using algorithm-selection adaptivity in the UMTS path search function seems to be useful. The MLE based algorithm is used when there are strong closely spaced path and the PDP based algorithm is used in all other conditions, appears to be useful. However, in order to be conclusive a few points will still have to be studied.

AB - Wireless communication systems will have to become more and more exible. In the Adaptive Wireless Networking project we try to develop such a exible wireless communication system by developing algorithms for adaptive implementation of the digital signal processing functions in wireless communication systems. Within the limits of a wireless communication system standard there are two kinds of adaptivity: algorithm-selection adaptivity and algorithm-parameter adaptivity. In this paper we focus on algorithm-selection adaptivity in the UMTS path search function. Therefore we describe two path search algorithms: a Power Delay Prole (PDP) based algorithm and a Maximum Likelihood Estimate (MLE) based algorithm. We study and compare the performance of these algorithms under a number of multipath channel conditions by means of simulations. The MLE based algorithm is able to resolve a larger number of paths, especially when the paths are closely spaced, at the cost of an increased computational complexity. Therefore, using algorithm-selection adaptivity in the UMTS path search function seems to be useful. The MLE based algorithm is used when there are strong closely spaced path and the PDP based algorithm is used in all other conditions, appears to be useful. However, in order to be conclusive a few points will still have to be studied.

KW - adaptive signal processing

KW - IR-48116

KW - METIS-219311

KW - path search

KW - UMTS

M3 - Conference contribution

SN - 90-73461-43-X

SP - 294

EP - 300

BT - Proceedings of the STW program: ProRISC

PB - STW/NWO/Dutch Ministry of Economic Affairs

CY - Veldhoven, The Netherlands

ER -