### Abstract

We consider a single cell single input multiple output (SIMO) system employing orthogonal frequency division multiplexing (OFDM). In such systems, setting the pilot-to-data power ratio (PDPR) has a large impact on the spectral and energy efficiency. In this paper we provide a closed form solution for the mean square error (MSE) of the received data as a function of the PDPR assuming Gaussian channels and minimum mean square error (MMSE) equalization. In numerical experiments we find that the MSE is a convex function of the PDPR and study the PDPR that minimizes the MSE as the number of antennas at the base station (BS) grows large. We find that the MSE-minimizing PDPR heavily depends on the number of antennas and the path loss between the mobile station and the BS. Specifically, as the number of antennas grows large, a larger portion of the total power budget needs to be allocated for pilot signals, especially for low path loss users.

Original language | English |
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Title of host publication | 20th European Wireless Conference, EW 2014 |

Publisher | VDE VERLAG GMBH |

Pages | 485-492 |

Number of pages | 8 |

ISBN (Print) | 9783800736218 |

Publication status | Published - 2014 |

Event | 20th European Wireless Conference, EW 2014 - Barcelona, Spain Duration: May 14 2014 → May 16 2014 |

### Other

Other | 20th European Wireless Conference, EW 2014 |
---|---|

Country | Spain |

City | Barcelona |

Period | 5/14/14 → 5/16/14 |

### Fingerprint

### Keywords

- Cellular networks
- Channel estimation
- MIMO systems
- Power control

### ASJC Scopus subject areas

- Computer Networks and Communications
- Electrical and Electronic Engineering
- Communication

### Cite this

*20th European Wireless Conference, EW 2014*(pp. 485-492). VDE VERLAG GMBH.

**On the pilot-data power trade off in single input multiple output systems.** / Fodor, Gábor; Telek, M.

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

*20th European Wireless Conference, EW 2014.*VDE VERLAG GMBH, pp. 485-492, 20th European Wireless Conference, EW 2014, Barcelona, Spain, 5/14/14.

}

TY - GEN

T1 - On the pilot-data power trade off in single input multiple output systems

AU - Fodor, Gábor

AU - Telek, M.

PY - 2014

Y1 - 2014

N2 - We consider a single cell single input multiple output (SIMO) system employing orthogonal frequency division multiplexing (OFDM). In such systems, setting the pilot-to-data power ratio (PDPR) has a large impact on the spectral and energy efficiency. In this paper we provide a closed form solution for the mean square error (MSE) of the received data as a function of the PDPR assuming Gaussian channels and minimum mean square error (MMSE) equalization. In numerical experiments we find that the MSE is a convex function of the PDPR and study the PDPR that minimizes the MSE as the number of antennas at the base station (BS) grows large. We find that the MSE-minimizing PDPR heavily depends on the number of antennas and the path loss between the mobile station and the BS. Specifically, as the number of antennas grows large, a larger portion of the total power budget needs to be allocated for pilot signals, especially for low path loss users.

AB - We consider a single cell single input multiple output (SIMO) system employing orthogonal frequency division multiplexing (OFDM). In such systems, setting the pilot-to-data power ratio (PDPR) has a large impact on the spectral and energy efficiency. In this paper we provide a closed form solution for the mean square error (MSE) of the received data as a function of the PDPR assuming Gaussian channels and minimum mean square error (MMSE) equalization. In numerical experiments we find that the MSE is a convex function of the PDPR and study the PDPR that minimizes the MSE as the number of antennas at the base station (BS) grows large. We find that the MSE-minimizing PDPR heavily depends on the number of antennas and the path loss between the mobile station and the BS. Specifically, as the number of antennas grows large, a larger portion of the total power budget needs to be allocated for pilot signals, especially for low path loss users.

KW - Cellular networks

KW - Channel estimation

KW - MIMO systems

KW - Power control

UR - http://www.scopus.com/inward/record.url?scp=84916886482&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84916886482&partnerID=8YFLogxK

M3 - Conference contribution

SN - 9783800736218

SP - 485

EP - 492

BT - 20th European Wireless Conference, EW 2014

PB - VDE VERLAG GMBH

ER -