### Abstract

Recently, the superimposed pilot channel estimation has attracted attention for wireless communications, where the pilot symbol sequence is superimposed on a data symbol sequence and transmitted together, and thus there is no drop in information rate. In the superimposed pilot channel estimation, the receiver correlates the received symbol sequence with the pilot symbol sequence, and obtains the channel estimate. However, the correlation between the pilot symbol sequence and the data symbol sequence deteriorates the channel estimation accuracy. In particular, the channel estimation accuracy of the superimposed pilot channel estimation scheme is significantly deteriorated in MIMO systems, because the pilot symbol power of each transmit antenna to the total transmit power of all transmit antennas becomes smaller as the number of transmit antennas increases. On the other hand, it has been well known that the SAGE algorithm is an effective method for channel estimation and data detection. This algorithm is particularly effective in MIMO systems, because the operation of this algorithm can cancel the interference from other transmit antennas. In this paper, we propose a SAGE algorithm for channel estimation and data detection using superimposed pilot channel estimation in MIMO systems. From the results of computer simulations, we show that the proposed system can achieve the good BER performances by using the SAGE algorithm with iteration.

Original language | English |
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Title of host publication | IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference |

DOIs | |

Publication status | Published - 2006 Dec 1 |

Event | IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference - San Francisco, CA, United States Duration: 2006 Nov 27 → 2006 Dec 1 |

### Publication series

Name | GLOBECOM - IEEE Global Telecommunications Conference |
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### Other

Other | IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference |
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Country | United States |

City | San Francisco, CA |

Period | 06/11/27 → 06/12/1 |

### ASJC Scopus subject areas

- Engineering(all)

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## Cite this

*IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference*[4151179] (GLOBECOM - IEEE Global Telecommunications Conference). https://doi.org/10.1109/GLOCOM.2006.549