From LINC

This paper appeared in the proceedings for IEEE International Symposium on Information Theory.

[edit] Abstract

This paper considers a multi-cell multiple antenna system with precoding at the base stations for downlink transmission. To enable precoding, channel state information (CSI) is obtained via uplink training. This paper mathematically characterizes the impact that uplink training has on the performance of multi-cell multiple antenna systems. When non-orthogonal training sequences are used for uplink training, it is shown that the precoding matrix used by the base station in one cell becomes corrupted by the channel between that base station and the users in other cells. This problem of pilot contamination is analyzed in this paper. A multi-cell MMSE-based precoding is proposed that, when combined with frequency/time/pilot reuse techniques, mitigate this problem.

[edit] Citation

Jubin Jose, Alexei Ashikhmin, Tom Marzetta, and Sriram Vishwanath . "Pilot Contamination in Multi-Cell TDD Systems." Proc. of IEEE International Symposium on Information Theory (ISIT '10).

[edit] BibTeX

@inproceedings{ {{{bitex cite}}},
  author = "Jubin Jose and Alexei Ashikhmin and Tom Marzetta and Sriram Vishwanath",
  title = { Pilot Contamination in Multi-Cell TDD Systems },
  booktitle = { Proc. of IEEE International Symposium on Information Theory (ISIT '10) }
}